Amphicarpaea bracteata

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a broad distribution across several provinces in Canada. In Western Canada, its range extends through the provinces of Manitoba and Saskatchewan. Moving toward the Atlantic coast, it can also be found in Eastern Canada. Specifically, it is located within the provinces of New Brunswick and Nova Scotia. Additionally, the species is distributed as far east as Newfoundland.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Amphicarpaea bracteata is characterized by a highly specific niche, as it is documented to occur at a precise elevation of 1400 m AMSL. This narrow elevational range, with both its minimum and maximum recorded values situated at 1400 m AMSL, suggests a specialized adaptation to particular altitudinal climatic conditions and environmental pressures found at this specific height. Such a localized distribution implies that the plant's survival is closely tied to the distinct temperature gradients, atmospheric pressure, and moisture levels associated with this exact altitude.

Elevational range max:

1400 m AMSL

Life history

The life history of Amphicarpaea bracteata is characterized by its status as an annual species, completing its entire developmental cycle within a single growing season. As an annual, the plant begins its life through seed germination, typically following seasonal moisture availability, and rapidly transitions through vegetative growth to establish a robust presence in its habitat. Throughout its brief lifespan, it focuses its energy on producing foliage and developing reproductive structures, culminating in the flowering phase. Once pollination occurs, the plant directs its remaining resources toward seed production, ensuring the survival of the next generation before the parent individual senesces. This rapid lifecycle allows the species to exploit ephemeral resources and respond dynamically to environmental shifts, relying on a persistent soil seed bank to navigate unfavorable years.

Lifecycle :

annual

Morphology

The morphology of Amphicarpaea bracteata is characterized by a growth form categorized as both a herb and a forb, displaying a non-woody structure. It functions as an independent organism rather than a parasite and maintains a terrestrial habit, lacking aquatic or epiphytic tendencies. Regarding its climbing nature, the plant exhibits a facultative climbing habit, meaning it is not an obligatory vine or liana but possesses the capacity to climb while also being capable of being self-supporting.

Aquatic :

terrestrial

Climber :

self-supporting

Climber :

facultative

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Amphicarpaea bracteata is fundamentally characterized by its use of the C3 photosynthetic pathway, a mechanism wherein carbon fixation occurs directly through the Calvin cycle without the temporal or spatial separation seen in C4 or CAM plants. This metabolic strategy involves the initial fixation of atmospheric carbon dioxide by the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) to form a three-carbon compound, 3-phosphoglycerate. As a member of the Fabaceae family, its physiological processes are also heavily integrated with symbiotic nitrogen fixation. Through specialized root nodules, the plant facilitates a relationship with Rhizobium bacteria, allowing for the conversion of atmospheric nitrogen into bioavailable forms, which supports its protein synthesis and overall nutrient assimilation. This nitrogen-fixing capability, combined with its C3 metabolism, enables the plant to maintain vigorous growth and reproductive success across its typical temperate forest habitats.

Photosynthetic pathway :

C3

Reproduction

Reproduction in Amphicarpaea bracteata is characterized by the production of seeds with specific physical dimensions and fruit textures. The seeds exhibit a highly consistent volume, with both the minimum and maximum recorded values, as well as the mean volume, measuring exactly 2.1 mm³. In terms of mass, the seeds show a degree of variability, ranging from a minimum of 0.01918 g to a maximum of 0.035 g, with an overall mean seed mass of 0.02709 g. Furthermore, the fruit associated with this reproductive process is characterized by a dry texture.

Fruit dryness :

dry

Seed mass max:

0.035 g

Seed mass mean:

0.02709 g

Seed mass min:

0.01918 g

Seed volume max:

2.1 mm³

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Amphicarpaea bracteata 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 seed.

Seed

1. Biochimica et biophysica acta

Chemicals

Amphicarpaea bracteata has 18 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include CALCIUM, COPPER, FAT, IRON, MAGNESIUM.

CALCIUM

1. Dr. Duke

COPPER

1. Dr. Duke

FAT

1. Dr. Duke

IRON

1. Dr. Duke

MAGNESIUM

1. Dr. Duke

MANGANESE

1. Dr. Duke

Nitrogen

1. Dr. Duke

PHOSPHORUS

1. Dr. Duke

POTASSIUM

1. Dr. Duke

ZINC

1. Dr. Duke

Activities

Amphicarpaea bracteata has 236 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include 5-Alpha-Reductase-Inhibitor, ACE-Inhibitor, Abortifacient, Aldose-Reductase-Inhibitor, Allergenic.

5-Alpha-Reductase-Inhibitor

1. Dr. Duke

ACE-Inhibitor

1. Dr. Duke

Abortifacient

1. Dr. Duke

Aldose-Reductase-Inhibitor

1. Dr. Duke

Allergenic

1. Dr. Duke

Alpha-Reductase-Inhibitor

1. Dr. Duke

Analgesic

1. Dr. Duke

Anemiagenic

1. Dr. Duke

Angiotensin-Receptor-Blocker

1. Dr. Duke

AntiBPH

1. Dr. Duke