Eriosema nutans

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a diverse distribution across several key regions of the African continent. In West Tropical Africa, its presence is specifically noted within Nigeria. Moving into West-Central Tropical Africa, it can be found in Burundi, Rwanda, and the Democratic Republic of the Congo. Furthermore, the species extends its range into Northeast Tropical Africa, specifically within Eritrea. Together, these locations illustrate a broad geographical footprint spanning multiple tropical zones.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Eriosema nutans is fundamentally defined by its specialized niche within montane ecosystems, where it thrives across a distinct altitudinal gradient. This species is primarily distributed within mid-to-high altitude zones, occupying an elevational range that extends from a minimum of 1372 m AMSL to a maximum of 2074 m AMSL. This vertical distribution suggests an adaptation to the specific microclimates, temperature fluctuations, and moisture regimes characteristic of these tropical or subtropical montane environments. By inhabiting this specific range, the plant interacts with a unique assemblage of soil compositions and biotic communities typical of these elevations, which influence its growth patterns and ecological role within its native habitat.

Elevational range max:

2074 m AMSL

Elevational range min:

1372 m AMSL

Life history

The life history of Eriosema nutans is characterized by its classification as a perennial plant, allowing it to persist through multiple growing seasons. In terms of its morphological strategy and survival mechanisms, it functions as a geophyte, utilizing underground storage organs to endure unfavorable environmental conditions. This life form is further categorized under the broader classification of a cryptophyte, indicating that its regenerative buds are protected below the soil surface, ensuring its continuity and ability to re-emerge during favorable climatic cycles.

Life form :

geophyte

Life form :

cryptophyte

Lifecycle :

perennial

Morphology

The morphology of Eriosema nutans is characterized by its growth form as a non-woody herb, specifically classified as a forb. This plant exhibits a self-supporting climbing habit, though it lacks the woody structure typical of larger climbers. In terms of stature, it is a relatively small species with a plant height ranging from a minimum of 0.3 m to a maximum of 1.5 m. Regarding its ecological niche and substrate, the species is terrestrial rather than aquatic or epiphytic, and it functions as an independent organism, meaning it does not exhibit parasitic behavior.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Plant height max:

1.5 m

Plant height min:

0.3 m

Woodiness :

non-woody

Physiology

The physiology of Eriosema nutans is characterized by its utilization of the C3 photosynthetic pathway, a fundamental metabolic process where carbon dioxide is fixed directly into a three-carbon compound during the initial stage of the Calvin cycle. This biochemical strategy involves the enzyme RuBisCO facilitating the carboxylation of ribulose-1,5-bisphosphate, which is typical for many woody dicotyledonous species within this taxonomic group. Consequently, the plant's carbon assimilation efficiency and water-use dynamics are inherently tied to the temperature and CO2 availability of its environment, as the C3 pathway is subject to photorespiration when stomatal conductance decreases. Through this metabolic framework, Eriosema nutans manages its energy production and carbohydrate synthesis to support its growth and physiological development.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Eriosema nutans is characterized by specific dispersal mechanisms that facilitate the movement of its seeds within the environment. Regarding its dispersal syndrome, the plant exhibits an autochorous strategy, which is further categorized by a diverse range of potential vectors including anemochorous, zoochorous, autochorous, hydrochorous, and unspecialized modes. This multifaceted approach to seed distribution is complemented by a secondary dispersal profile that remains primarily autochorous, yet encompasses a wide breadth of environmental interactions such as anemochorous, anthropochorous, autochorous, endozoochorous, epizoochorous, hydrochorous, myrmecochorous, unspecialized, and zoochorous processes.

Dispersal syndrome :

autochorous

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Eriosema nutans has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include genistein.

genistein

1. Dr. Duke

Activities

Eriosema nutans has 72 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Abortifacient, Aldose-Reductase-Inhibitor, Alpha-Reductase-Inhibitor, Antiaggregant, Antiangiogenic.

Abortifacient

1. Dr. Duke

Aldose-Reductase-Inhibitor

1. Dr. Duke

Alpha-Reductase-Inhibitor

1. Dr. Duke

Antiaggregant

1. Dr. Duke

Antiangiogenic

1. Dr. Duke

Antiatherosclerotic

1. Dr. Duke

Anticancer (Breast)

1. Dr. Duke

Anticarcinomic (Breast)

1. Dr. Duke

Anticlimacteric

1. Dr. Duke

Antiendoccytotic

1. Dr. Duke