Martius and the Divine Food

Learn more about the cacao tree from the perspective of the naturalist Martius during his travels in Brazil

LIFE Photo Collection

The meaning of the name

The scientific name of the cacao tree, Theobroma cacao, was assigned by the famous naturalist Carl Linnaeus (1707-1778). The name means divine food (from Greek theós = god; brôma = food), in reference to the Aztecs, who considered the cacao tree a sacred plant. 

Carl Friedrich Philipp von Martius (1794-1868) (December 12, 2006 (original upload date)) by J. Kuhn after MerzOriginal Source: Hans Wahl, Anton Kippenberg: Goethe and his world, Insel-Verlag, Leipzig 1932 p.204

Martius and the cacao tree

Cacao arrived in Europe in the early 16th century, brought by Spanish conquistadors from their travels to the Americas. However, details of this plant in Brazil, especially in the Amazon, were recorded by the naturalist Martius during his travels in the country (1817-1820).

Vol. I, Part I, Fasc. See Urban Plate 1 (1906)CRIA - Centro de Referência em Informação Ambiental

The cacao tree in its natural environment

In Flora Brasiliensis, compiled by Martius, lithographs of Brazilian landscapes were produced. On his journey down the Rio Negro in the Amazon, Martius recorded a typical cacao tree environment: the igapó forests.

The cacao tree in its natural environment

In the book ‘Travels in Brazil’, Martius wrote: “In Brazil, these forests are called wetlands, or, in the general language, gapó. It is a very suitable terrain for the cacao tree, of which I saw some wild trunks here, and others in a cacao grove planted in tight rows.”

The cacao tree in its natural environment

“This tree does not reach a great height and does not extend its canopy much, as it bears its heavy fruits only on the trunk and main branches.” 
[Look closely at the image of the cacao tree with its fruits.]

Vol. XII, Part III, Fasc. 96 Plate 16 (1886-03-01)CRIA - Centro de Referência em Informação Ambiental

Illustrations

In compiling the work Flora Brasiliensis, Martius added a beautiful plate with details of the flowers, fruits, and leaves of the cacao tree.

Flowers and fruits

The cacao tree has an unusual type of flowering and fruiting: the flowers (and the subsequent fruits) develop on the main trunk or on the branches close to it.

Cacao fruit (2020-04-18) by Jenni MiskaOriginal Source: Unsplash

Where does it grow?

The cacao tree is found in the Amazon river basin, and the tropical regions of Central and North America. The species is widely cultivated and sold in several states of Brazil.

Chocolate and cacao seeds (2021-02-23) by Tetiana BykovetsOriginal Source: Unsplash

Chocolates and other delicacies

Cacao is the main raw material for chocolate, made by roasting and grinding its dried beans in an industrial process, or by hand. Other by-products of cacao include its pulp, juice, jelly, fine spirits, and ice cream.

Cacao seeds (2021-09-01) by Tetiana BykovetsOriginal Source: Unsplash

Martius: the 'chocolatier'

Martius visited planted and wild cacao trees throughout Brazil, and made distinctions regarding the taste of the seeds in these two situations, as if he were a chocolate specialist – a ‘chocolatier.’ In some passages, during his travels, he wrote: 

Cacao fruits growing on the branch of the tree, Xà Bang, Châu Đức, Bà Rịa, 2019-11-14, Original Source: Unsplash
,
Collected cacao seeds, Pablo Merchán Montes, 2017-05-04, Original Source: Unsplash
Show lessRead more

“As is known, the cacao from Pará and the Rio Negro is considered of medium or even inferior quality, due to its somewhat harsh and bitter taste, and because it contains less of the sweet oil. This is partly because the cacao here is harvested from wild trees rather than planted ones. In their wild state, plants produce more of their specific properties, which, as far as cacao is concerned, we should add the bitter ingredient, comparable to caffeine (...).”

Opened cocoa fruit, Larry Garcia Pezo, 2019-08-10, Original Source: Unsplash
,
Hands holding cacao seeds, Kiyoshi, 2021-10-01, Original Source: Unsplash
Show lessRead more

“On the other hand, there is more oil in the fruit of the planted tree; fatty oils in the fruits are produced in a greater proportion under cultivation. The Maranhão beans, therefore, are mostly flattened, less substantial than the inferior varieties.”

Cocoa pulp (2019-03-12) by Rodrigo FloresOriginal Source: Unsplash

Cacao processing

He reported that the production process, started with breaking the fruit, then the beans being squeezed through a sieve to remove the juice, which was highly prized by the indigenous people. Then the beans were laid to dry on maranta tupé mats (Maranta sp.). And he added:

Cocoa seeds being processed, Fernando Andrade, 2019-05-28, Original Source: Unsplash
,
Various cocoa seeds, Leonard Asuque, 2021-02-10, Original Source: Unsplash
Show lessRead more

“The procedure of burying the beans in order to reach fermentation without access to much air, which prevents germination and sets the bitter aroma, is ignored (..). They simply dry the seeds in the sun and stop stirring them so that they all come into contact with the air. When harvesting wild cacao, this preparation would often be difficult in local conditions, because in the humid lowlands of the igapó forests, there are no free dry spaces and the collectors are sometimes restricted to canoes.”

Seeds of various species of cocoa (1964) by Jose CuatrecasasOriginal Source: Cuatrecasas, J. (1964). Cocoa and its allies. A Taxonomic Revision of the Genus Theobroma (Contribution National Herbarium US National Museum 35). Washington, DC, Part, 6, 1-1235.

Other divine seeds

Martius also observed that the harvest of wild cacao in the Amazon was mixed with other species. “I must add that although most of the cacao from that region comes from Theobroma cacao, the collectors undoubtedly also mix in the seeds of other species (...).”

Fruits of various species of cocoa, Jose Cuatrecasas, 1964, Original Source: Cuatrecasas, J. (1964). Cocoa and its allies. A Taxonomic Revision of the Genus Theobroma (Contribution National Herbarium US National Museum 35). Washington, DC, Part, 6, 1-1235.
,
Flowers of various species of cocoa, Jose Cuatrecasas, 1964, Original Source: Cuatrecasas, J. (1964). Cocoa and its allies. A Taxonomic Revision of the Genus Theobroma (Contribution National Herbarium US National Museum 35). Washington, DC, Part, 6, 1-1235.
Show lessRead more

Martius wrote regarding this mixture of seeds: “I found Theobroma bicolor, discovered by Humboldt and Bonpland in Choco province, also near the mouth of the Rio Negro, in Manacuru and in the Japurá in a wild state, and besides this I found several other cacao species (...)”.

Various opened cocoa fruits (2019-03-12) by Rodrigo FloresOriginal Source: Unsplash

Martius’ legacy for cacao cultivation

By documenting traditional cultivation and processing techniques, as well as the differences between wild and planted cacao, Martius recognized the importance of cacao as a valuable plant and encouraged its cultivation in Brazil.

Credits: Story

Research and writing: Luiza F. A. de Paula (Federal University of Minas Gerais / CRIA)
Assembly: Luiza F. A. de Paula
Review: João Renato Stehmann (Federal University of Minas Gerais), Renato De Giovanni (CRIA)
References: Flora Brasiliensis (http://florabrasiliensis.cria.org.br/opus), Travels in Brazil (https://www2.senado.leg.br/bdsf/handle/id/573991
Additional information: http://florabrasiliensis.cria.org.br/stories
Acknowledgments: All the authors of the photos and characters in the story

*Every effort has been made to credit the images, audio, and video and correctly recount the episodes narrated in the exhibitions. If you find errors and/or omissions, please email contato@cria.org.br

Credits: All media
The story featured may in some cases have been created by an independent third party and may not always represent the views of the institutions, listed below, who have supplied the content.
Explore more

Interested in Natural history?

Get updates with your personalized Culture Weekly

You are all set!

Your first Culture Weekly will arrive this week.

Google apps