The Psychedelic Evidence Atlas

Chapter 1 — Before Ayahuasca Became One Thing

There is a problem hidden inside the title of this book.

The problem is the word ayahuasca .

It appears singular. It sounds as though it identifies one stable thing: one plant, one drink, one ceremony, one tradition, perhaps even one experience. Scientific papers use it. Governments use it. Retreat centres use it. Journalists use it. Travellers use it. People may employ the same word while referring to materially and culturally different interventions.

The apparent simplicity is useful. It is also dangerous.

Across the Amazon and beyond it, the word can point toward a climbing plant, a prepared drink, a medicine, a ceremonial practice, a field of knowledge, or a family of related but non-identical preparations. Other names— yagé , caapi , nixi pae , uni , natem , daime , hoasca , vegetal and many more—are reported within particular languages, peoples, regions and histories. They cannot be gathered beneath a single international label without something being lost.

Sometimes what is lost is a shade of meaning.

Sometimes it is the identity of the intervention itself.

That is the governing problem of this volume:

The name may remain constant while the intervention changes beneath it.

The name may remain constant while the intervention changes beneath it.

Before asking what ayahuasca does, we therefore have to ask what the word is being asked to contain.

A Familiar Word Is Not a Neutral Word

This book uses ayahuasca in its title because it is the most widely recognised international term. That choice is practical, not innocent.

An umbrella word can make communication possible. It can also make distinct things look interchangeable. Once a term becomes dominant, other names may be treated as local synonyms rather than as evidence of different systems of knowledge. A word once attached to a vine in one record may later be attached to a drink. A term used by one community may be carried into another. A name may travel farther than the practice that first gave it meaning.

Contemporary Indigenous sources make the problem visible.

The Union of Indigenous Yagé Medics of the Colombian Amazon—UMIYAC—centres yagé in its own institutional name and public language. Its declaration brings together authorities identified with the Siona, Inga, Coreguaje, Kamentsá-Biya and Cofán peoples. In its English-language explanation, ambiwaska and ayahuasca appear alongside the principal term rather than replacing it.

That is not evidence that every person in those communities uses the same vocabulary. Nor does it establish a universal Colombian rule. It does establish something more modest and more important: ayahuasca is not automatically the preferred name of the people whose practices outsiders place beneath it.

Terminology is therefore not decoration. It is evidence.

When a source says yagé , this book will not silently rewrite it as ayahuasca . When Richard Spruce records caapi , the historical term matters. When a modern clinical paper uses ayahuasca , the paper must define the intervention that the word represents. The language of a source is part of its chain of custody.

The Seduction of a Literal Translation

The familiar translations are compelling: “vine of the soul,” “vine of the spirits,” “rope of the dead.” They appear to offer a secret door into the word.

The historical lexicon is less obliging.

In the inspected transcription of Holguín’s vocabulary (1608; 1952 edition), aya means corpse or deceased person. Huasca is glossed as rope or thick cord. Together, these support the cautious rendering “rope” or “cord of the dead.”

Even that conclusion has limits.

The component entries inspected here do not establish a standalone aya huasca entry. Its two component words come from a colonial missionary dictionary representing a historically situated form of Quechua. Quechuan languages have regional varieties, changing spellings and living communities whose meanings cannot be frozen inside a seventeenth-century book.

“Vine of the dead” becomes intelligible when later botanical records identify a climbing plant. But “vine” is already an interpretation of huasca , not its only literal value. “Vine of the soul” may express later spiritual interpretation, but it is not the uniquely literal translation established by the 1608 entries.

Etymology can illuminate a history. It cannot carry the entire culture on its back.

The Archive Does Not Begin at the Beginning

Historical accounts often speak of a “first report” of ayahuasca. The phrase suggests a clean starting line: before the report, silence; after it, history.

That is not how this archive behaves.

A surviving document records the moment when a particular observer wrote—or compiled, copied, translated or published—something that entered a recoverable archive. It does not record the beginning of the practice described. An observation may precede its manuscript. A manuscript may remain unpublished for generations. A later historian may narrate an earlier event without preserving the original witness. Editors may attach a name or date that later writers mistake for certainty.

The first surviving written trace is therefore not the origin of the medicine.

It is the origin of one documentary trail.

That distinction matters because the missionary archive has repeatedly been compressed into a deceptively simple story.

A Date Wearing the Wrong Hat

One widely repeated claim places the first written account in 1675 and associates it with the Jesuit José Chantre y Herrera.

The document does not support that formulation.

Chantre’s Historia de las misiones de la Compañía de Jesús en el Marañón español, 1637–1767 is a retrospective history, printed in Madrid in 1901. The range 1637–1767 identifies the period narrated by the book. It is not the date of Chantre’s observation or publication.

The RAE dictionary reproduces Chantre’s ayaguasca passage: a concentrated drink used in divination. Its cited locator is Chapter VI, printed p. 80; that page has not been inspected here. The excerpt does not establish an encounter date, community or underlying record.

It proves that Chantre’s later compilation contains the word.

It does not prove that Chantre witnessed the scene, that it occurred in 1675, or that the practice began in the seventeenth century.

The language of the passage also matters. Chantre presents the drink through Christian ideas of the demonic and the infernal. Those terms tell us about the missionary gaze. They must not be mistaken for the categories of the people being observed.

The Manuscript Attributed to Maroni

A stronger early textual anchor appears in Noticias auténticas del famoso río Marañón .

The relevant passage was printed in 1889 in the Boletín de la Sociedad Geográfica de Madrid . In Part One, Chapter Three, section II, printed pages 54–55, the text distinguishes between the reported use of white floripondio and a vine “commonly called ayahuasca.” It associates both with divination and altered awareness. The paragraph does not provide a botanical specimen, a complete preparation or a named community.

The authorship is not as certain as later references imply.

Editor Marcos Jiménez de la Espada argued that Pablo Maroni was probably the author. His case drew upon handwriting, language, locations, correspondence and chronology. Yet he deliberately did not put Maroni’s name on the title page because he considered the proof incomplete.

The date has also drifted.

“Maroni, 1737” is widely repeated as though the year were printed beside the ayahuasca passage. It is not. The year belongs to Maroni’s mission chronology and renewed collecting activity. Jiménez de la Espada placed the principal composition of the manuscript by 1738 and also identified later additions.

The safest description is less elegant but more accurate:

An anonymous Jesuit mission manuscript, probably written by Pablo Maroni and principally composed by 1738, contains a clear occurrence of the word ayahuasca . The passage was first printed in 1889.

An anonymous Jesuit mission manuscript, probably written by Pablo Maroni and principally composed by 1738, contains a clear occurrence of the word ayahuasca . The passage was first printed in 1889.

That sentence refuses a tidy “first.” It also keeps the evidence intact.

Magnin and the Printed Route

Juan Magnin is often placed next in the chronology. Online summaries sometimes claim that his Breve descripción de la Provincia de Quito supplied a direct account of ayahuasca in 1740.

The recovered source trail does not yet justify that confidence.

The manuscript has an identified archival home in Madrid’s Archivo Histórico Nacional. An OTCA-hosted work by Eduardo Estrella quotes Magnin through Bayle (1940) and names ayahuasca. The later carrier requires comparison with the manuscript; it does not verify the original wording or encounter date.

Magnin remains relevant to the mission record. The recovered printed quotation names ayahuasca; its manuscript ancestry and encounter date remain unverified.

This is a small correction with a large consequence. Once a modern identification enters a timeline, repetition can make it resemble transcription. The Evidence Atlas must keep those two acts separate.

Veigl’s Cord

Franz Xaver Veigl offers a clearer record.

His Gründliche Nachrichten über die Verfassung der Landschaft von Maynas in Süd-Amerika, bis zum Jahre 1768 was published in Nuremberg in 1785. The words “to the year 1768” identify the endpoint of the account, not its publication date.

In the inspected 1798 printing, Veigl names Hayac-Huasca on printed p. 189. The corresponding locator in the 1785 collection remains unresolved; Chapter 5 distinguishes the two editions. He places it among plants he considered harmful, calls it a kind of Bejuco , and describes it climbing large trees like a broad, bark-like band. He glosses the name as a bitter reed—or, more accurately, a cord. He also admits that he does not know the associated ceremonial preparation. 1

That admission is valuable. It marks the boundary of the observer’s knowledge.

Veigl again interprets the practice through the hostile religious language of superstition and sorcery. His record can support the existence of a name, a climbing plant and an attributed use within the world he observed. It cannot supply an Indigenous explanation that he did not understand.

When Botany Entered the Story

The nineteenth century changes the documentary texture.

The archive begins to contain sustained descriptions, first-person travel narratives and preserved botanical specimens. This does not make the observers neutral. It does make some questions easier to separate.

Manuel Villavicencio’s Geografía de la República del Ecuador, published in 1858, records Aya huasca in eastern Ecuador. At printed pages 371–373, he associates the vine and its use with Záparos, Santa Marías, Mazanes and Anguteros and includes an account of his own experience.

Modern summaries sometimes compress this into a different or singular community attribution. The primary passage does not permit that shortcut. Villavicencio’s historical names must be reported as his identifications, with care about their relationship to contemporary peoples and self-identification.

Richard Spruce left an even more layered trail.

In November 1852 he attended a gathering at Urubú-coará on the Uaupés. During 1852–1853 he collected the flowering and fruiting plant near Panuré. He made a botanical description from living material in 1853, encountered related names and plants among Guahibos near Maypures in 1854, and recorded aya-huasca at Canelos and Puca-yacu in 1857. He compiled his essay from field notes around 1870. It appeared in Ocean Highways: The Geographical Review in August 1873; Alfred Russel Wallace reproduced it in 1908, omitting two paragraphs.

One “discovery date” cannot contain all of those events.

Spruce distinguished caapi , Tucáno cadána and Ecuadorian aya-huasca while concluding that the cultivated vines he examined belonged to the same botanical species. His surviving specimen chain gives that botanical claim an unusual degree of physical continuity.

But the specimen does not prove that every drink, ceremony or category attached to those names was identical. Botanical continuity is not cultural equivalence. A preserved vine is not a preserved ceremony.

One Word, Several Objects

The historical record now allows a disciplined conclusion.

The term ayahuasca has referred to more than one kind of object:

• a named climbing plant;

• a liquid associated with that plant;

• a medicine or field of healing practice;

• a ceremonial event;

• a category applied by outsiders to practices carrying other names;

• and, in modern research, an intervention whose actual composition may vary between studies.

Those meanings overlap. They are not interchangeable.

If an early writer names a vine, that does not establish the ingredients of a later drink. If a modern study analyses a particular preparation, its results belong first to that tested preparation. If a community describes a medicine through territory, ancestry and spiritual responsibility, reducing it to a molecule changes the subject.

The word may stay still while the evidence underneath it moves.

What This Chapter Can—and Cannot—Say

The archive supports several claims.

It supports the presence of forms resembling ayahuasca in eighteenth-century Jesuit mission writing. It supports the conclusion that one important manuscript was principally composed by 1738, although its authorship remains probable rather than certain and its key paragraph is not securely dated 1737. It supports clear nineteenth-century published attestations and a botanical specimen chain. It supports the existence of multiple names and culturally situated systems that cannot be replaced by a universal label.

The archive does not reveal when the underlying practices began.

It does not establish one place of origin.

It does not show that every historical description concerned the same ingredients.

It does not prove that one translation captures the word’s complete cultural meaning.

It does not grant an outsider’s terminology authority over contemporary Indigenous self-description.

These are not failures of the evidence. They are its boundaries.

Before the Chemistry

The chapters ahead will examine plants, preparations, molecules, pharmacology, ceremonies, experiences, clinical studies, risks, laws and claims. Each domain will be tempted to inherit a stable object called ayahuasca .

That inheritance must be inspected every time.

What was the material?

Who named it?

Who prepared it?

Which community, lineage or institution described its meaning?

What did the researcher actually test?

Which conclusions belong to that intervention—and which have travelled farther than the evidence allows?

The first task is not to make the archive say more.

It is to stop making different archives say the same thing.

Ayahuasca became one thing when an umbrella word grew large enough to cover many worlds.

This volume begins by lifting its edge.

Evidence Check

What is directly supported

• UMIYAC centres yagé in its contemporary institutional self-description and names Siona, Inga, Coreguaje, Kamentsá-Biya and Cofán authorities in its declaration.

• González Holguín’s 1608 lexicon supports historically situated component meanings of aya and huasca , but contains no located standalone compound entry.

• Chantre’s ayaguasca is attested in RAE’s excerpt; no seventeenth-century encounter date is established.

• The anonymous manuscript probably attributable to Pablo Maroni contains ayahuasca at pp. 54–55 of its 1889 printing and was principally composed by 1738.

• Magnin’s later printed quotation names ayahuasca; manuscript wording and encounter date remain unverified.

• The inspected 1798 printing contains Hayac-Huasca on p. 189; the corresponding 1785 locator remains unresolved. The year 1768 is the account’s endpoint, not its print date.

• Villavicencio’s 1858 passage and Spruce’s 1852–1857 observations establish later textual and botanical anchors without establishing one uniform preparation.

Claims deliberately withheld

• a first use or origin date;

• “the first written account was in 1675”;

• an unqualified “Maroni, 1737” priority claim;

• one universal Indigenous name;

• one fixed recipe across regions and periods;

• “vine of the soul” as the single literal translation;

• equivalence between botanical identity, preparation identity and ceremonial identity.

Principal source routes

• Union of Indigenous Yagé Medics of the Colombian Amazon (UMIYAC), “Our Ancestral Medicine, the Ayahuasca,” and 2019 declaration on cultural appropriation.

• Diego González Holguín, Vocabulario de la lengua general de todo el Perú llamada lengua qquichua o del Inca (1608).

• Anonymous [probably Pablo Maroni], “Noticias auténticas del famoso río Marañón,” edited by Marcos Jiménez de la Espada, Boletín de la Sociedad Geográfica de Madrid XXVI–XXVII (1889); editorial attribution in vol. XXVI, pp. 193–205; ayahuasca passage in vol. XXVII, pp. 54–55.

• Juan Magnin, Breve descripción de la Provincia de Quito… Archivo Histórico Nacional, Madrid, Jesuitas, leg. 251, no. 2, doc. 4 (1740), fols. 18–19. Compare Eduardo Estrella, Plantas medicinales amazónicas: realidad y perspectivas, §2.2.5, OTCA-hosted PDF p. 36 (Bayle 1940 route).

• Franz Xaver Veigl, “Gründliche Nachrichten über die Verfassung der Landschaft von Maynas in Süd-Amerika, bis zum Jahre 1768,” in Christoph Gottlieb von Murr, Reisen einiger Missionarien der Gesellschaft Jesu in Amerika (1785). The corresponding 1785 locator requires reconciliation; the 1798 printing is directly verified at p. 189. See Chapter 5 and 1798 primary scan, printed p. 189 .

• José Chantre y Herrera, Historia de las misiones de la Compañía de Jesús en el Marañón español, 1637–1767 (1901), p. 80.

• Manuel Villavicencio, Geografía de la República del Ecuador (1858), pp. 371–373.

• Richard Spruce, “On Some Remarkable Narcotics of the Amazon Valley and Orinoco,” in Notes of a Botanist on the Amazon and Andes , vol. II (1908), pp. 413–425.

Notes

1 . Franz Xaver Veigl, Gründliche Nachrichten … bis zum Jahre 1768 (Nuremberg: Zeh, 1798), printed p. 189; 1798 primary scan, printed p. 189 . The inspected passage names the climbing plant and drink but explicitly leaves the ceremonial preparation unknown. This locator applies to the 1798 printing, not automatically to the 1785 collection.