Rhynchosia phaseoloides

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a scattered geographical distribution across various tropical regions. In the South-Central Pacific, it can be found specifically within the Tuamotu islands. Its presence extends significantly into the Caribbean, where it inhabits the Bahamas. Furthermore, the species is documented throughout the Greater Antilles, including Cuba and the Dominican Republic. Finally, it also occurs within the territory of Haiti.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Rhynchosia phaseoloides is characterized by its broad adaptability across diverse environmental settings and a significant altitudinal distribution. This species thrives in a wide variety of habitats, ranging from anthropogenic areas (Área Antrópica) and coastal restingas to complex forest ecosystems, including gallery forests (Floresta de Galeria), seasonal semi-deciduous forests (Floresta Estacional Semi-decidual), ombrophilous rainforests (Floresta Ombrófila), and terra firme forests (Floresta de Terra Firme). Its vertical distribution is equally extensive, occurring from sea level (0 m AMSL) up to elevations reaching as high as 1900 m AMSL, allowing it to occupy various ecological niches across different topographic gradients.

Elevational range max:

1900 m AMSL

Elevational range min:

0 m AMSL

Habitat :

Área Antrópica, Floresta Ciliar ou Galeria, Floresta de Terra Firme, Floresta Estacional Semidecidual, Floresta Ombrófila (= Floresta Pluvial), Restinga

Life history

The life history of Rhynchosia phaseoloide is characterized by a variable lifecycle that can manifest as an annual, biennial, or perennial species depending on environmental conditions and habitat stability. As a member of the Fabaceae family, its developmental stages involve a period of vegetative growth where it establishes a root system capable of supporting its various growth forms. In its perennial state, the plant demonstrates long-term survival through successive growing seasons, whereas its annual and biennial tendencies allow it to complete its reproductive cycle more rapidly in response to seasonal shifts. The life cycle culminates in the production of flowers and subsequent seed development, ensuring the continuation of the species across diverse ecological niches.

Lifecycle :

perennial

Morphology

The morphology of Rhynchosia phaseoloides is characterized by a non-woody, herbaceous growth form, functioning primarily as a herb. This plant is terrestrial in its habitat, lacking aquatic or semiaquatic tendencies, and it does not exhibit epiphytic behavior, remaining strictly terrestrial. As a climbing species, it behaves as a vine, specifically classified as an obligatory climber to navigate its environment. Furthermore, the plant is biologically independent, showing no parasitic characteristics, and maintains a soft, non-woody structure throughout its vegetative development.

Aquatic :

terrestrial

Climber :

vine

Climber :

obligatory

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Rhynchosia phaseoloideides is characterized by a metabolic framework governed by the C3 photosynthetic pathway. In this process, the initial fixation of atmospheric carbon dioxide occurs through the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO), which attaches CO2 to a five-carbon sugar, ribulose-1,5-bisphosphate (RuBP), to produce two molecules of 3-phosphoglycerate (3-PGA). This direct carboxylation within the mesophyll cells avoids the specialized anatomical adaptations seen in C4 or CAM species, relying instead on the Calvin cycle to convert these organic acids into carbohydrates for energy and growth. Consequently, the plant's gas exchange and water-use efficiency are tightly linked to its stomatal conductance, as it must balance the intake of CO2 for photosynthesis against the physiological risk of transpiration and photorespiration inherent to the C3 pathway.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Rhynchosia phaseoloides involves complex mechanisms for both pollination and seed dissemination to ensure the survival of the species. Following successful fertilization, the plant produces seeds that are distributed through multiple strategies, exhibiting a diverse dispersal syndrome. Specifically, its dispersal mechanisms are characterized as being both anemochorous and zoochorous, meaning seeds are spread by both wind and animals. Additionally, the species utilizes autochory, where seeds are dispersed by their own internal mechanisms, and may occasionally engage in hydrochory via water transport. Due to this combination of methods, the dispersal pattern can also be classified as unspecialized, allowing the plant to exploit various environmental vectors to colonize new territories.

Dispersal syndrome :

zoochorous

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Rhynchosia phaseoloides has 2 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include genistein, hydroxygenistein.

genistein

1. Dr. Duke

hydroxygenistein

1. Dr. Duke

Activities

Rhynchosia phaseoloides 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