Wild Laburnum

Names and Synonyms

Common Names

• Wild Laburnum
• Cape Golden-Pea

Scientific Names

Accepted name

Synonyms

• Virgilia aurea
• Podalyria aurea
• Sophora aurea

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified within the phylum Streptophyta and class Equisetopsida. Under the subclass Magnoliidae, it falls into the order Fabales and the family Fabaceae. Finally, it is categorized under the genus Calpurnia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific distribution pattern across several key regions of the African continent. In West-Central Tropical Africa, its presence is recorded in the Central African Republic and the DR Congo. Moving toward the eastern side of the continent, it is also found within Northeast Tropical Africa. Specifically, its range in this northeastern sector includes Eritrea and Ethiopia. Finally, the species completes its known geographical distribution in Somalia.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Calpurnia aurea is defined by its adaptation to a wide vertical distribution, spanning an elevational range from 0 m to 1900 m AMSL. This significant altitudinal breadth allows the species to inhabit diverse environmental gradients, ranging from lowland habitats to higher montane zones. Within these varying elevations, the plant thrives in specific microclimates that support its growth cycles, navigating the shifts in temperature, atmospheric pressure, and moisture availability inherent to such a broad topographical reach. This ability to persist from sea level up to nearly 2000 meters underscores its ecological plasticity and its capacity to occupy diverse niches across different mountain and coastal landscapes.

Elevational range max:

1900 m AMSL

Elevational range min:

0 m AMSL

Life history

The life history of Calcurnia aurea is characterized by its nature as a perennial, allowing the plant to persist through multiple growing seasons rather than completing its cycle within a single year. As a perennial, it establishes a stable presence within its habitat, typically relying on underground structures to survive periods of dormancy or unfavorable environmental conditions. This long-term survival strategy enables the plant to accumulate resources over time, often leading to more robust flowering and reproductive efforts in subsequent years compared to annual or biennial species. Through this continuous lifecycle, the plant can maintain a consistent presence in its ecological niche, contributing to the long-term stability of its local population.

Lifecycle :

perennial

Morphology

The morphology of Calpurnia aurea is characterized by its woody structure and diverse growth forms, ranging from a shrub to a tree. As a self-supporting plant, it does not function as a liana or vine, nor does it act as a parasite, maintaining an independent life cycle. It is a terrestrial species, lacking aquatic or semiaquatic tendencies, and does not exhibit epiphytic behavior. In terms of stature, the plant shows significant variability in height; it typically reaches a minimum of 1 m, with a mean height of approximately 4.5 m, though it can attain a maximum height of up to 10 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Growth form :

shrub

Parasite :

independent

Plant height max:

10 m

Plant height mean:

4.5 m

Plant height min:

1 m

Woodiness :

woody

Physiology

The physiology of Calpurnia aurea is characterized by its reliance on the C3 photosynthetic pathway, a common mechanism in temperate forest understory plants that involves the direct fixation of atmospheric carbon dioxide through the enzyme RuBisCO within the mesophyll cells. This metabolic process is highly efficient under the cool, shaded, and moist conditions typical of its woodland habitat, where the plant manages gas exchange and water retention through regulated stomatal activity. Because it lacks the specialized carbon-concentrating mechanisms found in C4 or CAM species, its physiological performance is closely tied to the availability of light and consistent soil moisture, which are essential to drive the Calvin cycle and maintain the energetic requirements for its growth and reproductive cycles.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Calpurnia aurea is characterized by the production of seeds that exhibit specific morphological and dispersal properties. The seed mass of this species is relatively small, with a recorded minimum mass of 0.02136 g and a maximum mass of 0.04 g, resulting in a calculated mean seed mass of 0.0286675 g. Regarding its reproductive strategy for spreading, the plant utilizes an anemochorous dispersal syndrome, meaning its seeds are primarily dispersed by the wind.

Dispersal syndrome :

anemochorous

Seed mass max:

0.04 g

Seed mass mean:

0.0286675 g

Seed mass min:

0.02136 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Calpurnia aurea has 4 reported plant parts identified across 5 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf, root, seed, stem.

Leaf

1. Journal of parasitology research
2. BMC complementary and alternative medicine

Root

1. BMC complementary and alternative medicine

Seed

1. Journal of experimental pharmacology

Stem

1. African journal of traditional, complementary, and alternative medicines : AJTCAM

Chemicals

Calpurnia aurea has 3 reported phytochemicals identified across 5 scientific publications and several other databases. The most consistently reported chemicals include 3-Acetoxy-9-methoxypterocarpan, Calpurnine, Tannins.

3-Acetoxy-9-methoxypterocarpan

1. African journal of traditional, complementary, and alternative medicines : AJTCAM

Calpurnine

1. African journal of traditional, complementary, and alternative medicines : AJTCAM

Tannins

1. Journal of parasitology research

Activities

Calpurnia aurea has 6 reported activities identified across 5 scientific publications and several other databases. The most consistently reported activities include Antibacterial, Antidiabetic, Antihyperglycemic, Antihyperlipidemic, Antioxidant.

Antibacterial

1. African journal of traditional, complementary, and alternative medicines : AJTCAM

Antidiabetic

1. Journal of experimental pharmacology

Antihyperglycemic

1. Journal of experimental pharmacology

Antihyperlipidemic

1. Journal of experimental pharmacology

Antioxidant

1. African journal of traditional, complementary, and alternative medicines : AJTCAM

Hypoglycemic

1. Journal of experimental pharmacology

Medicinal Uses

Calpurnia aurea has 18 reported medicinal uses identified across 5 scientific publications and several other databases. The most consistently reported uses include Diabetes mellitus, E. coli, Escherichia coli, Mycobacterium tuberculosis, Pseudomonas aeruginosa.

Most Reported Uses

Preparations