Theobroma angustifolium

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a broad geographical distribution spanning from Mexico through several regions of Central America. In North America, it can be specifically found throughout Southeast Mexico. Moving southward, its range extends into El Salvador and Nicaragua. The species is also documented within the borders of Costa Rica. Finally, its distribution reaches as far south as Panamá.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Theobroma angustifolium is defined by its adaptation to specific altitudinal gradients, spanning an elevational range from a minimum of 0 m AMSL to a maximum of 1000 m AMSL. This distribution suggests the plant thrives in lowland to mid-elevation tropical environments, where it likely occupies niches characterized by specific moisture and temperature regimes typical of these altitudes. Within this range, the species interacts with local soil compositions and canopy structures, playing a functional role in its native ecosystem by contributing to nutrient cycling and providing structural complexity to its habitat.

Elevational range max:

1000 m AMSL

Elevational range min:

0 m AMSL

Life history

The life history of Theobroma angustifolium is characterized by its status as a perennial species, allowing it to maintain its presence in its natural ecosystem over many years. Throughout its existence, the plant maintains an evergreen habit, ensuring that its foliage remains functional and present across successive growing seasons rather than shedding all leaves seasonally.

Deciduousness :

evergreen

Lifecycle :

perennial

Morphology

The morphology of Theobroma angustifolium is characterized by a woody growth form, specifically functioning as a tree. It is a terrestrial plant that grows independently, lacking any parasitic tendencies. This species is self-supporting in its structure, neither acting as a climber nor an epiphyte, and it maintains a significant stature with an average plant height of approximately 20 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height mean:

20 m

Woodiness :

woody

Physiology

The physiology of Theobroma angustifolium is characterized by complex metabolic pathways geared toward survival in specific tropical ecosystems, though it lacks the specialized symbiotic mechanisms required to function as a nitrogen fixer. Unlike many tropical legumes, this species does not possess root nodules containing diazotrophic bacteria, meaning its capacity for atmospheric nitrogen fixation is marked as no. Consequently, its physiological processes are heavily dependent on the availability of soil nitrates and ammonium for protein synthesis and enzymatic function. The plant's metabolic efficiency is driven by photosynthetic activity optimized for shaded or semi-shaded environments, where it manages gas exchange and water potential to support leaf development and reproductive cycles. Because it cannot fix its own nitrogen, its growth rate and overall physiological vigor are intrinsically linked to the nutrient cycling and nitrogen mineralization processes within its immediate rhizosphere.

Nitrogen fixer :

no

Reproduction

The reproduction of Theobroma angustifolium is characterized by a biotic pollination syndrome, relying on living organisms rather than abiotic factors to facilitate the transfer of pollen. This process is primarily mediated by insects, which serve as the key pollinators for the species. Within this insect-driven framework, a diverse range of pollinators—including bees, beetles, ants, butterflies, moths, and flies—contribute to the successful fertilization of the plant. Following successful pollination, the plant produces seeds that vary in size, with a seed length ranging from a minimum of 15 mm to a maximum of 30 mm.

Pollination syndrome :

insect

Pollination syndrome :

biotic

Seed length max:

30 mm

Seed length min:

15 mm

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Theobroma angustifolium has 12 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Arachidic acid, Ash, Behenic acid, FAT, caffeine.

Arachidic acid

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Ash

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Behenic acid

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FAT

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caffeine

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linoleic acid

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oleic acid

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palmitic acid

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stearic acid

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theobromine

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Activities

Theobroma angustifolium has 123 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include (+)-Inotropic, 5-Alpha-Reductase-Inhibitor, Adenosine-Antagonist, Allergenic, Alpha-Reductase-Inhibitor.

(+)-Inotropic

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5-Alpha-Reductase-Inhibitor

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Adenosine-Antagonist

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Allergenic

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Alpha-Reductase-Inhibitor

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Analeptic

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Analgesic-Synergist

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Anemiagenic

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Angiotensin-Receptor-Blocker

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Anorexic

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