Cacao Tree
Theobroma cacao
Theobroma cacao, commonly known as the cacao or cocoa tree, is a tropical evergreen species …
Ducke's cacao (Theobroma duckei)
Silhouette: T. Michael Keesey
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Theobroma duckei: Amazonian Wild Cacao Species
Native to the pristine rainforests of northern Brazil, Theobroma duckei thrives in the deep shade of the Amazon basin. This wild relative of the chocolate tree is named after the prominent botanist Adolpho Ducke, who extensively studied the Amazonian flora.
The species grows as an understory tree in non-flooded upland forests, known locally as terra firme. It contributes to the complex biodiversity of the tropical rainforest ecosystem.
Taxonomy
- ∟ царство Plantae
- ∟ division Tracheophytes (Vascular Plants)
- ∟ subdivision Spermatophytes (Seed plants)
- ∟ Angiosperms
- ∟ mesangiosperms (Core angiosperms)
- ∟ eudicots
- ∟ Superrosids
- ∟ rosids
- ∟ malvids
- ∟ order Malvales
- ∟ family Malvaceae
- ∟ subfamily Byttnerioideae
- ∟ genus Theobroma (Cacao trees)
- ∟ species Theobroma duckei (Ducke's cacao)
Morphology
This evergreen tree displays distinct morphological traits adapted to the humid, shaded environment of the Amazonian understory.
- Growth Habit: A small to medium-sized tree with a branched canopy suited for low-light penetration.
- Leaves: Large, alternate, simple leaves with prominent veins that help shed excess moisture.
- Reproduction: Small, cauliflorous flowers that develop directly on the woody trunk and mature into hard-shelled fruits.
Applications
The primary value of Theobroma duckei lies in its ecological role as a food source for diverse rainforest fauna. Primates and small mammals consume the sweet pulp surrounding the seeds, aiding in seed dispersal.
Botanists and plant breeders value the species as a potential source of genetic traits for crop breeding. It provides insights into the evolutionary history of the genus Theobroma.
Interesting facts
The species honorific duckei commemorates Adolpho Ducke's monumental contributions to neotropical botany. Unlike cultivated cacao, this wild species remains largely untouched by domestication, preserving its ancestral genetic characteristics.
- Terra Firme Specialist: It prefers well-drained upland soils over seasonally flooded floodplains.
- Faunal Dependency: Its survival is closely linked with native Amazonian seed dispersers.
Geography of distribution
- Brazil
Sources
- Plants of the World Online (POWO)
- World Flora Online (WFO)
- Global Biodiversity Information Facility (GBIF)
Technical Information
External Databases: GBIF
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