Isolona hexaloba

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a widespread distribution across several key regions in the African tropics. In West Tropical Africa, its presence is documented in both Ghana and Nigeria. Moving into West-Central Tropical Africa, the species can be found in the Central African Republic and Cameroon. Additionally, the plant extends its range to the Cabinda enclave within the same central region. Collectively, these locations highlight the specific tropical habitats required for its growth.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Isolona hexaloba is characterized by its status as a perennial species, allowing the plant to persist through multiple growing seasons rather than completing its cycle within a single year. As a perennial, it maintains a long-term presence in its natural habitat, establishing robust structures that support continuous growth and reproductive efforts over an extended lifespan. This life strategy enables the plant to accumulate resources over time, providing it with greater resilience to environmental fluctuations compared to annual or biennial species. Through its enduring lifecycle, Isolona hexaloba can engage in repeated reproductive cycles, ensuring its long-term survival and stability within its ecological niche.

Lifecycle :

perennial

Morphology

The morphology of Isolona hexaloba is characterized by its stature as a large, woody tree, reaching an average height of approximately 17.5 m. This species exhibits a self-supporting growth habit, functioning as an independent organism rather than a parasite or an epiphyte, and it maintains a strictly terrestrial existence. Unlike climbing vines or lianas, its structural development is entirely self-supporting, establishing a robust, woody framework typical of its arboreal growth form.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height mean:

17.5 m

Woodiness :

woody

Physiology

The physiology of Isolona hexaloba is characterized by a metabolic framework that does not include the capacity to function as a nitrogen fixer. Unlike certain leguminous species that engage in symbiotic relationships with rhizobia to convert atmospheric nitrogen into bioavailable forms, this plant relies on the uptake of mineral nitrogen, such as nitrates and ammonium, directly from the soil through its root system. This reliance on external nitrogen sources dictates its nutrient acquisition strategies and influence its growth patterns within its ecological niche. Consequently, the plant's nitrogen fixation status is categorized as no, meaning it lacks the specialized biological mechanisms required for endogenous nitrogen fixation.

Nitrogen fixer :

no

Reproduction

The reproduction of Isolona hexaloba is characterized by a specific seasonal flowering pattern that dictates its reproductive cycle. The flowering period is relatively concentrated, with the flowering start occurring in May. This onset leads into a brief reproductive window, as the flowering end also occurs within the month of May. This specific timing indicates a highly synchronized and short-duration flowering phase, which is essential for the plant's pollination and subsequent seed production processes.

Flowering time :

May

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Isolona hexaloba has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include stem.

Stem

1. Journal of ethnopharmacology