LILA visionary.art
Pharmakon Plants Psychotria viridis
Rubiaceae · Gentianales · Angiosperms

Psychotria viridis

Chacruna · chacrona · rainha · chacrona folha · amiruca · oco-yagé
Botanical description Ruiz & Pavón, 1799 · Chemical–ethnographic record Cashinahua material, 1970

Botany

Accepted namePsychotria viridis Ruiz & Pav., 1799 — accepted by Plants of the World Online
Original publicationFlora Peruviana, et Chilensis, volume 2, p. 61, plate 210, fig. b (Ruiz and Pavón, 1799). An original expedition drawing by José Brunete survives in Madrid.
Family / orderRubiaceae, subfamily Rubioideae, tribe Psychotrieae · Gentianales.
Life formEvergreen, usually multi-stemmed understorey shrub or small tree, commonly 2–5 m tall.
Native rangeHumid tropical America: Mesoamerica and the Greater Antilles through northern and western South America, including Amazonian Colombia, Ecuador, Peru, Bolivia and Brazil. It occurs in moist lowland and premontane forest, river terraces and secondary growth.
Cultivated rangeWidely cultivated in western Amazonian household and specialist gardens, Brazilian religious communities, retreat centres and ethnobotanical collections; established in tropical and frost-free subtropical regions beyond its native range.
Local namesChacruna / chakruna / chacrona in Peru and regional Spanish; chacrona, folha and rainha in Brazilian ayahuasca religions; amiruca / samiruca and oco-yagé occur in some regional literatures but may also name related species. Vernacular names do not guarantee botanical identity.
ConservationLeast Concern Assessed as Least Concern on the IUCN Red List, while local wild populations and ritual cultivars remain exposed to habitat conversion and unrecorded trade (Machuca Machuca, 2022).

Morphology

The plant bears opposite, simple leaves generally 5–15 cm long, elliptic to obovate, with entire margins, acute to acuminate tips and five to ten pairs of secondary veins. Interpetiolar stipules protect each new node; when they fall they leave a transverse scar with a reddish-brown line of hairs. Terminal or subterminal branching inflorescences carry many small, white, tubular five-lobed flowers. The fruits are small drupes that ripen red and contain two grooved pyrenes, each usually enclosing one seed.

Its most useful living diagnostic characters are the foveolae or domatia on the underside of many leaves: narrow pockets beside the midrib, often opening where a secondary vein meets it. These chambers shelter mites and vary in number and form among leaves. They help distinguish chacruna from several traded lookalikes, but no single leaf character is infallible. Flowers, fruits, stipules, micromorphology and authenticated voucher material provide stronger identification, especially for dried or fragmented products (Hamilton, 1989; Kowalczuk et al., 2015).

Related and confused plants

Psychotria is one of the largest angiosperm genera and has proved phylogenetically complex. Organellar-genome analysis places P. viridis within Psychotrieae while confirming that older broad concepts of Psychotria are not a simple monophyletic unit (Varani et al., 2022). Psychotria carthagenensis, frequently called samiruca or amiruca, is a close ritual substitute, but chemical studies report DMT-rich, DMT-poor and DMT-absent material under that name. Diplopterys cabrerana—chaliponga, chagropanga or chagro—is an unrelated Malpighiaceae vine and the major DMT leaf of many Colombian and Ecuadorian yagé preparations.

Commercial fragmentation intensifies ambiguity. A study of material sold as P. viridis found botanical and chemical heterogeneity, including samples without detectable DMT. Chemical detection alone cannot prove the species because DMT occurs in many plants, while morphology alone may fail when leaves are powdered. Forensic and ethnobotanical identification therefore answer different questions: taxon, alkaloid content, provenance and ritual name require separate evidence (Kowalczuk et al., 2015).

Propagation and cultivation

Chacruna is propagated from fresh seed, stem cuttings and, characteristically, leaf cuttings. Adventitious plantlets can arise from wounded leaf veins when a leaf or section is held against moist substrate. Seeds contain an underdeveloped embryo and may germinate slowly; viability declines with poor storage. The shrub favours warmth, humidity, filtered light and freely drained but moisture-retentive soil. It tolerates repeated leaf harvest when plants are established, and pruning encourages branching.

Cultivated lineages vary in leaf shape, domatia, vigour, cold tolerance and chemistry. Full-sun and shade-grown clones show different metabolomic and lipidomic responses, especially among flavonoids, although a 2025 year-round clonal study found no statistically significant DMT difference across its tested seasons and light conditions (Matos et al., 2025). This contrasts with earlier field studies that detected environmental or harvest-related variation, illustrating how genotype and experimental design influence the result (Cavalcante et al., 2018).

Chemistry

Entheogenic & associated compounds

N,N-Dimethyltryptamine — 2D structure

N,N-Dimethyltryptamine

C₁₂H₁₆N₂ · PubChem 6089 →
2-(1H-indol-3-yl)-N,N-dimethylethanamine
Principal psychoactive indole alkaloid · serotonergic psychedelic
N-Methyltryptamine — 2D structure

N-Methyltryptamine

C₁₁H₁₄N₂ · PubChem 6088 →
N-methyl-2-(1H-indol-3-yl)ethanamine
Biosynthetic intermediate and variable minor alkaloid
Harmine — 2D structure

Harmine

C₁₃H₁₂N₂O · PubChem 5280953 →
7-methoxy-1-methyl-9H-pyrido[3,4-b]indole
Contextual caapi alkaloid · reversible MAO-A inhibitor
Serotonin — 2D structure

Serotonin

C₁₀H₁₂N₂O · PubChem 5202 →
3-(2-aminoethyl)-1H-indol-5-ol
Structural comparator · endogenous neurotransmitter, not the leaf’s principal entheogen

DMT pharmacology

DMT is a tryptamine structurally related to serotonin. Its psychedelic effects are mediated principally by agonism at cortical 5-HT2A receptors, with activity at other serotonin receptors contributing to the total profile. Binding to sigma-1 receptors and trace-amine-associated receptors has been demonstrated in experimental systems, but their importance to human visionary phenomenology remains unresolved (Carbonaro and Gatch, 2016). DMT is rapidly metabolised by monoamine oxidase A to indole-3-acetic acid and other metabolites.

Orally administered DMT is ordinarily inactivated before reaching effective systemic concentrations. Harmine and harmaline from B. caapi reversibly inhibit MAO-A; tetrahydroharmine contributes weaker MAO inhibition and additional serotonergic effects. The paired pharmacology gives chacruna DMT a slower onset and longer active window than inhaled or intravenous DMT, while the β-carbolines contribute their own bodily, oneiric and cognitive effects (McKenna, Towers and Abbott, 1984; Callaway et al., 1999; Riba et al., 2003).

Biosynthesis and leaf chemistry

Plant DMT biosynthesis is generally modelled from tryptophan through decarboxylation to tryptamine, followed by two sequential methylations: tryptamine to N-methyltryptamine and then DMT. The responsible aromatic amino-acid decarboxylase and indolethylamine N-methyltransferase pathways remain active areas of genomic and biochemical study in chacruna. Older analyses also report traces of methyl-tetrahydro-β-carboline and other minor bases, while untargeted work identifies triterpenes, phytosterols, flavonoids and long-chain lipids (Rivier and Lindgren, 1972; Soares et al., 2017; Matos et al., 2025).

Reported DMT concentration varies by individual, provenance, season, cultivation and analytical method. In 36 Brazilian leaf samples collected across 22 sites, some plants contained little or no detectable DMT, while others were appreciably richer (Callaway, Brito and Neves, 2005). Controlled 2025 metabolomics found seasonal change in many flavonoids and energy-related pathways but no statistically significant DMT shift in its clonal population. “Chacruna” therefore does not specify a standard dose or chemical profile.

Preparation as a plant relation

In common Peruvian and Brazilian preparations, fresh or dried leaves are layered or combined with cleaned and pounded caapi stem and repeatedly decocted. Selection may attend to plant lineage, leaf maturity, weather, prayer, ritual calendar and the authority of the person gathering. Santo Daime feitio and União do Vegetal preparations turn harvest, leaf cleaning, pounding, fire tending and reduction into collective liturgical labour. Preparation is simultaneously extraction, social organisation and transmission of doctrine.

Supported

DMT source. Authenticated P. viridis commonly contains DMT as its dominant alkaloid, with major quantitative variability among plants and samples.

Supported

Paired activation. Caapi β-carbolines permit orally ingested leaf DMT to remain bioavailable long enough to produce sustained psychedelic effects.

Attribution

Plant versus beverage. Clinical and phenomenological studies usually administer complete ayahuasca or synthetic DMT. They cannot automatically assign every observed effect to chacruna.

Safety boundary. DMT-containing ayahuasca can produce intense anxiety, disorientation, vomiting and transient cardiovascular change. Reversible MAO-A inhibition creates interaction risks with serotonergic and sympathomimetic drugs. Psychiatric history, cardiovascular condition, brew composition, co-medication and ceremonial management materially affect risk (Brito-da-Costa, Dias-da-Silva and Gomes, 2020).

Tradition, ritual & cultural use

Oldest evidenced or proposed human use

No archaeological remain has securely identified P. viridis. A c. 905–1170 CE ritual bundle from Cueva del Chileno, Bolivia, contained DMT together with harmine, bufotenine, cocaine and benzoylecgonine, demonstrating an ancient multi-plant psychotropic assemblage (Miller et al., 2019). DMT occurs in numerous South American taxa, so the analysis cannot determine whether chacruna, Diplopterys, Anadenanthera, Virola or another source supplied it. The find does not establish the modern caapi–chacruna recipe.

Ruiz and Pavón formally described the species in 1799 from Peruvian expedition material without recording an entheogenic use. Nineteenth-century descriptions of ayahuasca focused principally on the vine and often failed to identify admixture leaves. The first secure chemical–ethnographic documentation appeared in work with Cashinahua material published by Der Marderosian and colleagues in 1970, followed by Rivier and Lindgren’s 1972 analysis of ayahuasca and its plants among Cashinahua, Sharanahua, Culina and Piro communities. These studies helped establish DMT-bearing Psychotria as one component of western Amazonian preparations (Der Marderosian et al., 1970; Rivier and Lindgren, 1972).

The documentary chronology does not date the beginning of local knowledge. It does show that the geographically widespread caapi–chacruna formula was historically assembled and circulated through Indigenous, riverine, rubber-boom, mission, urban and religious networks. Critical ethnohistory treats present distribution as evidence of successful transmission, not as proof that every contemporary formulation has remained unchanged from pre-Columbian antiquity (Gow, 1994; Brabec de Mori, 2011).

Peoples, territories and traditions

Purús–Juruá

Huni Kuin/Cashinahua, Sharanahua, Culina and related traditions. Mid-twentieth-century ethnography and chemistry documented DMT-bearing Psychotria in beverages used for collective seeing, learning, social knowledge and consultation about distant persons or illness. Huni Kuin nixi pae now circulates through village, urban Indigenous and international ceremonial networks (Der Marderosian et al., 1970; Rivier and Lindgren, 1972).

Ucayali

Shipibo-Konibo oni practice. Chacruna is a common contemporary companion leaf in preparations led by onanya. Vision, bewá song, tobacco smoke, perfume, extraction and protective design form one therapeutic field. Ethnohistorical work indicates that recipes and specialist forms have changed through long exchange with neighbouring peoples, towns, missions and mestizo healers (Gebhart-Sayer, 1985; Brabec de Mori and Mori Silvano de Brabec, 2009).

Iquitos–Pucallpa–Tarapoto

Mestizo vegetalismo. Chacruna appears as a companion and teacher within ayahuasquero practice. Dietas, tobacco, ícaros, plant baths, perfumes and Catholic prayer create diagnostic and healing settings. Practitioners distinguish named leaf forms and may attribute clarity, colour or visionary light to chacruna (Luna, 1984; Luna, 1986; Beyer, 2009).

Napo and eastern Andean piedmont

Kichwa and neighbouring traditions. P. viridis occurs in some Ecuadorian and Peruvian preparations, but Diplopterys cabrerana and other leaves are also important. “Chacruna” cannot be projected across all yagé or ayahuasca traditions as a universal ingredient.

Brazil · Santo Daime

Rainha and the work of the feitio. The leaf is commonly called rainha, “queen”, and combined with jagube vine to produce daime. Hymn singing, dance formations, uniforms, the central table, celestial and Marian imagery, and collective discipline shape the sacrament’s effects. The preparation work itself transmits hierarchy, gendered offices and religious knowledge (MacRae, 1992; Hartogsohn, 2021).

Brazil · União do Vegetal

Chacrona and mariri. UDV prepares hoasca or vegetal from chacrona leaf and mariri vine. Sessions centre spoken doctrine, question and answer, music, mental concentration and the authority of Mestre Gabriel’s teachings. The drink’s burracheira is cultivated as a state of heightened perception and learning (Grob et al., 1996; Labate and MacRae, 2010).

Brazil · Barquinha

Daime, mediumship and maritime cosmology. Barquinha traditions combine the beverage with Christian devotion, Afro-Brazilian mediumship, healing works and a symbolic boat or barque. Chacrona participates within an institution whose songs, spirit incorporations and charitable works differ from Santo Daime and UDV (Araújo, 2002).

Ritual practice: seeing, diagnosis and healing

In western Amazonian curing, vision is a practical mode of diagnosis. A specialist may perceive pathogenic darts or substances, sorcery, soul loss, broken relations, plant owners or the actions of distant persons. Chacruna’s contribution is often described through illumination: it allows forms to become visible or sharp enough for the healer to inspect and act. Caapi supplies force, depth or command in complementary local formulations. These are emic distinctions that organise practice; chemical analysis describes the same pairing as DMT plus β-carbolines without exhausting its ritual meanings.

Healing proceeds through song, breath, tobacco, perfume, suction, massage, prayer and additional plants. Ícaros or bewá can summon assistance, direct the apparent motion of visions, extract or transform illness, establish arkana protection and close the body after work. Diet and abstention cultivate sensitivity and relations with plant teachers. The authority to interpret what is seen develops through apprenticeship and outcome, not ingestion alone (Luna, 1984; Beyer, 2009; Brabec de Mori, 2009).

Art and material culture

Shipibo-Konibo kené is applied to textiles, ceramics, bodies and architecture and is associated with beauty, ordering and identity. Ayahuasca-related healing accounts connect geometric vision, song and design, yet later Indigenous and ethnomusicological scholarship rejects a simple one-to-one transcription system in which every pattern can be literally sung. Visual and sonic practices correspond through embodied concepts of movement, proportion and efficacy while retaining distinct techniques and histories (Gebhart-Sayer, 1985; Brabec de Mori and Mori Silvano de Brabec, 2009; Belaunde, 2009).

Pablo Amaringo’s paintings offer a mestizo Amazonian archive of the visionary worlds made accessible through ayahuasca. Serpents, plant spirits, mermaids, healers, pathogenic projectiles, celestial cities, doctors, saints and technological craft coexist in densely structured scenes. Luna and Amaringo relate specific images to plant knowledge and ícaros; the paintings document one influential Peruvian visionary repertoire rather than a taxonomic atlas of universal DMT imagery (Luna and Amaringo, 1991).

Brazilian material forms include the cross and star, uniforms, hymnbooks, maracas, the Santo Daime table, UDV salon seating and the collective architecture of the feitio. Each disciplines posture, attention, gender, sequence and memory. Their efficacy is distributed across beverage, body, sound, spatial order and institution.

Cosmology & key terms

The leaf that gives light

A widespread contemporary formulation contrasts the vine’s force with the leaf’s light: caapi establishes the passage or power, while chacruna makes its inhabitants and forms visible. The contrast appears in Peruvian vegetalismo, retreat discourse and Brazilian religion with different theological elaborations. It should be read as a recurrent relational model, not as a single ancient myth shared by all Amazonian peoples. In many Indigenous preparations the principal visionary leaf is another species, and caapi itself may be held to see and teach.

Madres, owners and plant teachers

Vegetalistas describe medicinal plants as having madres, owners or spirits with whom disciplined relations can be established. Chacruna may appear as a woman, voice, luminous presence, patterned domain or teacher of song. Luna’s informants treat the plant’s mother as its living agency and understand songs acquired during diets or visions as evidence of relation (Luna, 1984; Luna, 1986). The botanical shrub, prepared leaf, visionary person and knowledge received from it are distinguishable but mutually implicated.

Rainha, Queen of the Forest and Marian registers

In Santo Daime the chacrona leaf is commonly rainha, queen. The name resonates within a wider cosmology of the Rainha da Floresta, the Virgin of the Conception, the Moon, forest sovereignty and the divine feminine encountered in Mestre Irineu’s foundational narratives. The vine–leaf conjunction is frequently coded as masculine and feminine, joined in the sacrament. Hymns, however, distribute “queen”, “mother”, “forest” and Marian titles across several divine referents; the botanical leaf cannot be reduced to one fixed goddess identity (MacRae, 1992; Groisman, 2000; Barnard, 2014).

Hoasca origins and doctrinal memory

UDV teaching situates mariri and chacrona within sacred histories transmitted orally through Mestre Gabriel’s doctrine. The plants are ingredients and participants in the restoration of primordial knowledge; their union produces vegetal and the state called burracheira. Narrative authority resides in the session, its sequence of calls, questions, teachings and remembered stories. Published summaries necessarily disclose less than the internally transmitted doctrinal system (Labate and MacRae, 2010).

Visionary beings and perspectival worlds

Serpents, jaguars, birds, aquatic people, ancestors and plant owners recur within western Amazonian accounts. Their meaning is not exhausted by resemblance to entoptic forms. Amazonian perspectival ontologies recognise animals and spirits as subjects possessing social worlds and points of view; visionary practice can temporarily alter the participant’s location within this field. The leaf’s “light” therefore reveals agencies and relations, not simply brighter pictures (Viveiros de Castro, 1998; Gearin and Deveney, 2021).

Visionary phenomenology

Oral ayahuasca onsetUsually 20–60 minutes, with substantial variation from meal, preparation, chemistry and individual metabolism.
Primary windowApproximately 2–4 hours of strongest alteration in many caapi–chacruna preparations.
Total oral durationCommonly 4–6 hours, with reflective, sensory or wakeful after-effects extending longer.
Isolated inhaled / IV DMTOnset in seconds and a primary visionary interval often under 20–30 minutes. This modern route-specific profile is not equivalent to drinking chacruna with caapi.
IntensityFrom subtle colour, pattern and autobiographical imagery to immersive world replacement, loss of ordinary bodily orientation and encounters experienced as autonomous.

Geometry, radiance and scene formation

Early visual phases commonly contain grids, zigzags, spirals, tessellations, tunnels and rapidly recombining colour. These can overlay the room with open eyes or expand behind closed eyelids. Geometry may acquire depth and become foliage, scales, feathers, architecture or an entry into fully articulated scenes. Participants report exceptional luminosity and detail: surfaces appear internally lit, boundaries pulse, and forms transform without obeying ordinary object permanence (Shanon, 2002).

Complex scenes include forests, rivers, palaces, temples, cities, processions, healing theatres and distant or apparently historical worlds. Serpents, felines, birds, human teachers, ancestors, religious figures, aliens or technological beings may appear as agents rather than passive images. Benny Shanon’s cognitive-phenomenological corpus distinguishes recurrent content from deeper structural changes in agency, identity, time, intentionality and perceived reality. The feeling that one has been shown knowledge—noesis—is a central phenomenological fact even when the external truth of the content remains a separate question (Shanon, 2002).

Plant attribution within a compound experience

Practitioners often attribute visual brightness, colour, specificity and disclosure to chacruna, while caapi supplies bodily force, rhythm, depth or teaching. Laboratory pharmacology supports DMT’s major contribution to complex visual imagery, yet the orally active state depends on β-carbolines and unfolds more slowly than isolated DMT. Songs, darkness, posture, group expectation and the chemical ratio all affect whether experience remains geometric, becomes narrative or is organised as diagnosis.

Chacruna alone, swallowed without MAO-A inhibition, does not reliably reproduce ayahuasca’s visionary syndrome because its DMT is rapidly metabolised. Conversely, caapi-only preparations can be psychoactive and visionary. The phenomenological distinction is therefore relational rather than a division between an active leaf and inactive vine.

Sound, body and healing action

Music can appear to draw lines through visual space, change colours, rotate patterned fields or call a new scene into view. In Shipibo-Konibo and vegetalista work, this coupling is understood as skilled action: the healer observes a patient and adjusts song, breath, tobacco and perfume. In Santo Daime, repeated hymns, maracá pulse and coordinated dance sustain attention and social order; UDV privileges seated concentration, speech and carefully timed recorded music. Different institutions produce different trajectories from overlapping chemistry (Hartogsohn, 2021).

The bodily field includes pressure, vibration, warmth and cold, altered balance, salivation, sweating, tremor and gastrointestinal urgency. Vomiting can be experienced as expulsion of illness, moral burden or intrusive force. Fear may change abruptly into relief, beauty or affection; autobiographical memory can carry unusual immediacy and moral weight. Other episodes involve apparent death, rebirth, dismemberment, identification with animals or plants, and loss of the ordinary boundary between self and world.

> The Antipodes of the mind reveal a geography that is much more amazing.

Recurrent

Radiant complexity. Fine geometry, saturated colour and internally luminous scenes are among the most stable descriptive themes in DMT-rich ayahuasca reports.

Relational

Music–vision coupling. Visual motion and affect commonly change with song; ceremonial specialists use this coupling diagnostically and therapeutically.

Source attribution

Chacruna-specific content. No controlled design can assign serpents, cities or entities to the leaf independently of caapi, participant and cultural setting.

Contemporary status

Contemporary expressions and economies

Chacruna remains a living ritual crop in Indigenous territories, mestizo healing centres, Santo Daime, União do Vegetal and Barquinha communities. Its cultivation now extends through urban gardens, church plantations and retreat-centre supply networks. Leaves circulate fresh, dried, refrigerated or as prepared beverage; value is created through horticulture, harvest, cooking, ceremony, music, accommodation and claims of lineage. Because leaf mass is repeatedly renewable and the shrub grows readily from cuttings, supply dynamics differ from harvesting decades-old wild caapi stems.

Transnational ayahuasca has brought chacruna into botanical collections and commercial nurseries far beyond Amazonia. It has also created new hybrids, selected clones and cultivation research. Public commerce often collapses chacruna, P. carthagenensis, “Nexus” hybrids and other Psychotria into chemical commodities. Authenticated community cultivation preserves a different set of values: named lineage, known effects, ritual provenance and continuity of collective preparation.

Conservation and biocultural continuity

The IUCN assessment of Least Concern reflects the species’ broad range and current global extinction risk, not the condition of every population. Deforestation, forest fragmentation and conversion of river terraces can remove wild stands. Cultivation reduces direct pressure, but cloned gardens can narrow genetic diversity and detach plants from the ecologies, languages and practices through which local kinds are recognised (Machuca Machuca, 2022; Ermakova et al., 2025).

Research priorities include population genetics, verified living collections, cultivar documentation and the conservation of related admixture species. The 2022 plastid and mitochondrial genomes provide tools for phylogeny and identification, while tissue-culture systems offer ex-situ propagation. Neither substitutes for in-situ habitat or community-held horticultural knowledge (Varani et al., 2022; Andrade et al., 2025).

Legality

DMT is listed in Schedule I of the 1971 UN Convention on Psychotropic Substances. The living plant is not separately listed by that convention, and international control of a pure compound does not automatically settle the legal status of every DMT-bearing plant or decoction. National laws differ sharply: some name P. viridis, some treat leaf material or ayahuasca as a DMT preparation, and others recognise specified Indigenous or religious use. France and Poland have explicitly controlled the plant; in the United Kingdom a DMT-containing preparation is exposed to Class A controls.

Brazil regulates religious ayahuasca practice through CONAD Resolution No. 1 of 2010. Peru’s 2008 cultural-heritage declaration protects the traditional knowledge and uses of ayahuasca among native Amazonian communities. In the United States, Gonzales v. O Centro (2006) and subsequent church agreements created fact-specific religious protections, not a general national exemption for DMT-containing leaf or beverage (Labate and Feeney, 2012).

Patents and pharmaceutical translation

No prominent modern plant patent comparable to the “Da Vine” caapi case centres on P. viridis. Patent activity instead claims synthetic DMT compositions, salts, delivery systems, controlled infusions, deuterated analogues and oral or transmucosal combinations with MAO inhibitors. US11602521B2 concerns DMT compositions and methods; WO2021259962A1 claims combinations and kits involving DMT and β-carbolines, including plant-source examples. Such claims generally concern formulations or methods rather than ownership of chacruna as a species.

The distinction matters scientifically and legally. Pharmaceutical DMT can be chemically identical to a plant alkaloid while differing in route, duration, accompanying β-carbolines, intellectual history and therapeutic institution. Patent novelty is assessed through claims and prior art; it does not by itself recognise the full ethnobotanical system that made oral DMT combinations historically visible.

Latest research: plant systems, brains and clinics

Organellar genomics

First genomic resources. The complete chloroplast and mitochondrial genomes clarified placement within Psychotrieae and supplied markers for future taxonomy and authentication (Varani et al., 2022).

Metabolomics

Season and cultivation. A 2025 clonal study found strong seasonal or light-related variation in flavonoids, lipids and carbohydrate pathways, but no significant DMT difference under its tested conditions (Matos et al., 2025).

Plant biotechnology

Callus and regeneration. Andrade et al. (2025) established callus culture, plantlet regeneration and in-vitro DMT production, with temporary-immersion plantlets surviving acclimatisation. This creates research and propagation capacity rather than a clinical product.

Plasticity

Cell and animal models. DMT promotes structural and functional neural plasticity in experimental systems. Translation to lasting human therapeutic change remains under study and cannot be inferred directly from cultured neurons (Ly et al., 2018).

Depression

Synthetic intravenous DMT. A 2026 phase IIa trial in 34 adults found a rapid reduction in depressive symptoms after one supported IV DMT session, with effects sustained during follow-up. It studied a standardised pharmaceutical route, not chacruna or ayahuasca (Erritzoe et al., 2026).

Neuroimaging

Large-scale connectivity. A 2026 international mega-analysis integrated 11 datasets across DMT, ayahuasca and other psychedelics and found increased coupling between transmodal and sensory networks alongside drug-specific variability (Girn et al., 2026).

Bibliography

Harvard style (Cite Them Right) · DOI and stable-record links · 55 sources

Archaeology & history

01 · 3 sources
Brabec de Mori, B. (2011) ‘Tracing hallucinations: contributing to a critical ethnohistory of ayahuasca usage in the Peruvian Amazon’, in Labate, B.C. and Jungaberle, H. (eds.) The Internationalization of Ayahuasca. Zürich: Lit Verlag, pp. 23–47.
Ethnohistorical chapter
Miller, M.J., Albarracin-Jordan, J., Moore, C. and Capriles, J.M. (2019) ‘Chemical evidence for the use of multiple psychotropic plants in a 1,000-year-old ritual bundle from South America’, Proceedings of the National Academy of Sciences, 116(23), pp. 11207–11212. Available at: https://doi.org/10.1073/pnas.1902174116.
DOI checked
Open record ↗
Viveiros de Castro, E. (1998) ‘Cosmological deixis and Amerindian perspectivism’, Journal of the Royal Anthropological Institute, 4(3), pp. 469–488.
Verified
Open record ↗

Art, music & material culture

02 · 4 sources
Belaunde, L.E. (ed.) (2009) Kené: arte, ciencia y tradición en diseño. Lima: Instituto Nacional de Cultura.
Scholarly catalogue
Brabec de Mori, B. and Mori Silvano de Brabec, L.E. (2009) ‘La corona de la inspiración. Los diseños geométricos de los Shipibo-Konibo y sus relaciones con cosmovisión y música’, Indiana, 26, pp. 105–134.
Ethnomusicology / Indigenous scholarship
Gebhart-Sayer, A. (1985) ‘The geometric designs of the Shipibo-Conibo in ritual context’, Journal of Latin American Lore, 11(2), pp. 143–175.
Ethnographic article
Luna, L.E. and Amaringo, P. (1991) Ayahuasca Visions: The Religious Iconography of a Peruvian Shaman. Berkeley, CA: North Atlantic Books.
Primary visual-ethnographic volume

Botany & taxonomy

03 · 12 sources
Andrade, C.M.L. et al. (2025) ‘Establishment of Psychotria viridis Ruiz & Pav. callus cultures, plantlet regeneration and in vitro production of the hallucinogenic indole alkaloid N,N-dimethyltryptamine’, Plant Cell, Tissue and Organ Culture, 161, 65.
Verified
Open record ↗
Brito-da-Costa, A.M., Dias-da-Silva, D. and Gomes, N.G.M. (2020) ‘Toxicokinetics and toxicodynamics of ayahuasca alkaloids N,N-dimethyltryptamine (DMT), harmine, harmaline and tetrahydroharmine: clinical and forensic impact’, Pharmaceuticals, 13(11), 334.
Verified
Open record ↗
Callaway, J.C. et al. (1999) ‘Pharmacokinetics of hoasca alkaloids in healthy humans’, Journal of Ethnopharmacology, 65(3), pp. 243–256.
Verified
Open record ↗
Hamilton, C.W. (1989) ‘A revision of Mesoamerican Psychotria subgenus Psychotria (Rubiaceae), part I’, Annals of the Missouri Botanical Garden, 76(1), pp. 67–111.
Verified
Open record ↗
Kowalczuk, A.P. et al. (2015) ‘Identification challenges in examination of commercial plant material of Psychotria viridis’, Acta Poloniae Pharmaceutica, 72(4), pp. 747–755.
Peer-reviewed article
Open record ↗
Machuca Machuca, K. (2022) ‘Psychotria viridis’, The IUCN Red List of Threatened Species 2022.
IUCN assessment · Least Concern
Open record ↗
McKenna, D.J., Towers, G.H.N. and Abbott, F. (1984) ‘Monoamine oxidase inhibitors in South American hallucinogenic plants: tryptamine and β-carboline constituents of ayahuasca’, Journal of Ethnopharmacology, 10(2), pp. 195–223. Available at: https://doi.org/10.1016/0378-8741(84)90003-5.
Verified
Open record ↗
Miranda, O.F. et al. (2020) ‘Influence of environment on the leaf morpho-anatomy and histochemical of the ayahuasca leaf’, Acta Scientiarum. Biological Sciences, 42, e50369.
Verified
Open record ↗
Riba, J., Valle, M., Urbano, G., Yritia, M., Morte, A. and Barbanoj, M.J. (2003) ‘Human pharmacology of ayahuasca: subjective and cardiovascular effects, monoamine metabolite excretion, and pharmacokinetics’, Journal of Pharmacology and Experimental Therapeutics, 306(1), pp. 73–83. Available at: https://doi.org/10.1124/jpet.103.049882.
Verified
Open record ↗
Royal Botanic Gardens, Kew (2026) ‘Psychotria viridis Ruiz & Pav.’, Plants of the World Online.
Taxonomic authority
Open record ↗
Ruiz, H. and Pavón, J. (1799) ‘Psychotria viridis’, Flora Peruviana, et Chilensis, 2, p. 61, plate 210, fig. b. Madrid.
Botanical primary source
Open record ↗
Varani, A.M. et al. (2022) ‘The complete organellar genomes of the entheogenic plant Psychotria viridis (Rubiaceae), a main component of the ayahuasca brew’, PeerJ, 10, e14114.
Verified
Open record ↗

Chemistry & pharmacology

04 · 7 sources
Callaway, J.C., Brito, G.S. and Neves, E.S. (2005) ‘Phytochemical analyses of Banisteriopsis caapi and Psychotria viridis’, Journal of Psychoactive Drugs, 37(2), pp. 145–150. Available at: https://doi.org/10.1080/02791072.2005.10399895.
Verified
Open record ↗
Carbonaro, T.M. and Gatch, M.B. (2016) ‘Neuropharmacology of N,N-dimethyltryptamine’, Brain Research Bulletin, 126, pp. 74–88.
Verified
Open record ↗
Cavalcante, A.D. et al. (2018) ‘Influence of environmental factors and cultural methods on the content of N,N-dimethyltryptamine in Psychotria viridis (Rubiaceae)’, Journal of the Brazilian Chemical Society, 29, pp. 1245–1255.
Verified
Open record ↗
Der Marderosian, A.H., Kensinger, K.M., Chao, J.M. and Goldstein, F.J. (1970) ‘The use and hallucinatory principles of a psychoactive beverage of the Cashinahua tribe (Amazon basin)’, Drug Dependence, 5, pp. 7–14.
Chemical–ethnographic primary study
Matos, T.S. et al. (2025) ‘Influence of environmental conditions and seasonality on the metabolome and lipidome of Psychotria viridis leaves’, The Plant Journal, 123(2), e70353.
Verified
Open record ↗
Rivier, L. and Lindgren, J.-E. (1972) ‘“Ayahuasca,” the South American hallucinogenic drink: an ethnobotanical and chemical investigation’, Economic Botany, 26(2), pp. 101–129. Available at: https://doi.org/10.1007/BF02860772.
Verified
Open record ↗
Soares, D.B.S. et al. (2017) ‘Psychotria viridis: chemical constituents from leaves and biological properties’, Anais da Academia Brasileira de Ciências, 89(2), pp. 927–938.
Verified
Open record ↗

Clinical research & neuroscience

05 · 4 sources
Erritzoe, D. et al. (2026) ‘A short-acting psychedelic intervention for major depressive disorder: a phase IIa randomized placebo-controlled trial’, Nature Medicine, 32.
Verified
Open record ↗
Girn, M., Doss, M.K., Roseman, L. et al. (2026) ‘An international mega-analysis of psychedelic drug effects on brain circuit function’, Nature Medicine, 32. Available at: https://doi.org/10.1038/s41591-026-04287-9.
Verified
Open record ↗
Ly, C. et al. (2018) ‘Psychedelics promote structural and functional neural plasticity’, Cell Reports, 23(11), pp. 3170–3182.
Verified
Open record ↗
Palhano-Fontes, F., Barreto, D., Onias, H., Andrade, K.C., Novaes, M.M., Pessoa, J.A., Mota-Rolim, S.A., Osório, F.L., Sanches, R., dos Santos, R.G., Tófoli, L.F., de Oliveira Silveira, G., Yonamine, M., Riba, J., Santos, F.R., Silva-Junior, A.A., Alchieri, J.C., Galvão-Coelho, N.L., Lobão-Soares, B., Hallak, J.E.C., Arcoverde, E., Maia-de-Oliveira, J.P. and Araújo, D.B. (2019) ‘Rapid antidepressant effects of the psychedelic ayahuasca in treatment-resistant depression: a randomized placebo-controlled trial’, Psychological Medicine, 49(4), pp. 655–663. Available at: https://doi.org/10.1017/S0033291718001356.
Verified
Open record ↗

Ethnography, ritual & cosmology

06 · 12 sources
Araújo, W.S. (2002) ‘A Barquinha: espaço simbólico de uma cosmologia em construção’, in Labate, B.C. and Araújo, W.S. (eds) O Uso Ritual da Ayahuasca. Campinas: Mercado de Letras, pp. 541–555.
Ethnographic chapter
Barnard, G.W. (2014) ‘Entheogens in a religious context: the case of the Santo Daime religious tradition’, Zygon, 49(3), pp. 666–684.
Verified
Open record ↗
Beyer, S.V. (2009) Singing to the Plants: A Guide to Mestizo Shamanism in the Upper Amazon. Albuquerque, NM: University of New Mexico Press.
Ethnographic synthesis
Gearin, A.K. and Calavia Sáez, O. (2021) ‘Altered vision: ayahuasca shamanism and sensory sociality’, Current Anthropology, 62(2), pp. 138–163. Available at: https://doi.org/10.1086/713737.
Verified
Open record ↗
Gow, P. (1994) ‘River people: shamanism and history in western Amazonia’, in Thomas, N. and Humphrey, C. (eds.) Shamanism, History and the State. Ann Arbor, MI: University of Michigan Press, pp. 90–113.
Ethnohistorical chapter
Groisman, A. (2000) Eu Venho da Floresta: Um Estudo sobre o Contexto Simbólico do Uso do Santo Daime. Florianópolis: Editora da UFSC.
Anthropological monograph
Hartogsohn, I. (2021) ‘Set and setting in the Santo Daime’, Frontiers in Pharmacology, 12, 651037. Available at: https://doi.org/10.3389/fphar.2021.651037.
Verified
Open record ↗
Labate, B.C. and MacRae, E. (eds) (2010) Ayahuasca, Ritual and Religion in Brazil. London: Equinox.
Scholarly volume
Luna, L.E. (1984) ‘The concept of plants as teachers among four mestizo shamans of Iquitos, northeastern Peru’, Journal of Ethnopharmacology, 11(2), pp. 135–156.
Verified
Open record ↗
Luna, L.E. (1986) Vegetalismo: Shamanism among the Mestizo Population of the Peruvian Amazon. Stockholm: Almqvist & Wiksell International.
Ethnographic monograph
MacRae, E. (1992) Guiado pela Lua: Xamanismo e Uso Ritual da Ayahuasca no Culto do Santo Daime. São Paulo: Brasiliense.
Ethnographic monograph
Shepard, G.H. Jr (1998) ‘Psychoactive plants and ethnopsychiatric medicines of the Matsigenka’, Journal of Psychoactive Drugs, 30(4), pp. 321–332. Available at: https://doi.org/10.1080/02791072.1998.10399708.
DOI checked
Open record ↗

Law, policy & patents

07 · 8 sources
Conselho Nacional de Políticas sobre Drogas (CONAD) (2010) Resolução n.º 1, de 25 de janeiro de 2010. Brasília: Ministério da Justiça e Segurança Pública. Available at: gov.br (Accessed: 29 July 2026).
official instrument
Open record ↗
Ermakova, A.O. et al. (2025) ‘Of shrub, cactus, vine and toad: psychedelic species conservation and sustainability’, Frontiers in Conservation Science, 6, 1569528. Available at: https://doi.org/10.3389/fcosc.2025.1569528.
Verified
Open record ↗
Instituto Nacional de Cultura del Perú (2008) Resolución Directoral Nacional No. 836/INC: declaratoria de patrimonio cultural de los conocimientos y usos tradicionales de la ayahuasca.
Official resolution
International Narcotics Control Board (2022) Green List: List of Psychotropic Substances under International Control. Vienna: United Nations.
Official schedule · DMT listed
Open record ↗
Labate, B.C. and Feeney, K. (2012) ‘Ayahuasca and the process of regulation in Brazil and internationally: implications and challenges’, International Journal of Drug Policy, 23(2), pp. 154–161. Available at: https://doi.org/10.1016/j.drugpo.2011.06.006.
Verified
Open record ↗
Supreme Court of the United States (2006) Gonzales v O Centro Espírita Beneficente União do Vegetal, 546 U.S. 418. Available at: Justia US Supreme Court Center (Accessed: 29 July 2026).
Judgment
Open record ↗
US11602521B2 (2023) ‘N,N-dimethyltryptamine compositions and methods’. United States patent.
WO2021259962A1 (2021) ‘Compositions and kits of parts comprising a psychedelic and a monoamine oxidase inhibitor’. International patent application.
Patent application
Open record ↗

Visionary phenomenology

08 · 5 sources
Cott, C. and Rock, A.J. (2008) ‘Phenomenology of N,N-dimethyltryptamine use: a thematic analysis’, Journal of Scientific Exploration, 22(3), pp. 359–370.
Phenomenological article
Grob, C.S. et al. (1996) ‘Human psychopharmacology of hoasca, a plant hallucinogen used in ritual context in Brazil’, Journal of Nervous and Mental Disease, 184(2), pp. 86–94.
Verified
Open record ↗
Shanon, B. (2002) The Antipodes of the Mind: Charting the Phenomenology of the Ayahuasca Experience. Oxford: Oxford University Press.
Cognitive-phenomenological monograph
Open record ↗
Strassman, R.J. (2001) DMT: The Spirit Molecule. Rochester, VT: Park Street Press.
Clinical memoir / synthesis
Timmermann, C. et al. (2019) ‘Neural correlates of the DMT experience assessed with multivariate EEG’, Scientific Reports, 9, 16324. Available at: https://doi.org/10.1038/s41598-019-51974-4.
Verified
Open record ↗

Cross-correlations

Kingdom / ecologyPlantae · humid-forest understorey shrub · Rubiaceae · leaf- and seed-propagated ritual crop
Principal compoundN,N-dimethyltryptamine ↳ orally activated in many preparations by caapi β-carbolines
Primary companionBanisteriopsis caapi · related alternatives include Psychotria carthagenensis and Diplopterys cabrerana
Cultural complexesHuni Kuin nixi pae · Shipibo-Konibo oni · Peruvian vegetalismo · Santo Daime · União do Vegetal · Barquinha · transnational ayahuasca
Ritual associationsVisionary light · diagnosis · plant teaching · song · kené · Rainha · collective feitio · burracheira · visionary painting
Linked speciesBanisteriopsis caapi · Psychotria carthagenensis · Diplopterys cabrerana · Nicotiana rustica · Brugmansia spp.