Bastard Pepper Tree

Names and Synonyms

Common Names

• Bastard Pepper Tree
• Mountain Kirkia
• Mountain Peppertree
• Wild-Peppertree

Scientific Names

Accepted name

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Sapindales, it is classified under the family Kirkiaceae. Finally, it is categorized within the genus Kirkia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical distribution within the southern region of the African continent. It can be found growing naturally in the country of Eswatini. Additionally, its presence extends into the northernmost parts of South Africa. Specifically, it inhabits areas within the Northern Provinces. These locations define the primary natural range for this medicinal species.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Kirkia wilmsii is defined by its ability to inhabit diverse topographical gradients, specifically thriving within a broad altitudinal spectrum. This species is distributed across varied landscapes, ranging from lower-lying areas at an elevation of 365 m AMSL to more elevated terrains reaching a maximum of 1495 m AMSL. This wide elevational range suggests a high degree of environmental plasticity, allowing the plant to adapt to the varying temperature regimes and moisture availability found between these different altitudes. Such a distribution pattern typically indicates an ecological resilience to different microclimates, enabling the species to occupy various niches within its native habitat.

Elevational range max:

1495 m AMSL

Elevational range min:

365 m AMSL

Life history

The life history of Kirkia wilmsii is characterized by its nature as a perennial species, allowing it to establish a long-term presence within its natural habitat. Throughout its developmental stages, the plant exhibits a deciduous growth habit, shedding its foliage periodically as part of its seasonal physiological cycle.

Deciduousness :

deciduous

Lifecycle :

perennial

Morphology

The morphology of Kirkia wilmsii is characterized by its growth form as a woody tree. It is a terrestrial, self-supporting plant that functions as an independent organism rather than a parasite or epiphyte. In terms of stature, the species exhibits significant vertical development, with a plant height that ranges from a minimum of 2 meters to a maximum of 15 meters, maintaining an average height of approximately 12 meters.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

15 m

Plant height mean:

12 m

Plant height min:

2 m

Woodiness :

woody

Physiology

The physiology of Kirkia wilmsii is characterized by a C3 photosynthetic pathway, which governs its carbon fixation process and energy production through the standard Calvin cycle. In terms of nutrient acquisition and soil interaction, the plant is not a nitrogen fixer, meaning it does not possess the symbiotic relationship with diazotrophic bacteria necessary to convert atmospheric nitrogen into usable forms, instead relying on the uptake of nitrogenous compounds directly from the soil.

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Reproduction

The reproduction of Kirkia wilmsii is characterized by a biotic pollination syndrome, relying on living organisms to facilitate the transfer of pollen. Specifically, the plant utilizes insect pollination to achieve fertilization, indicating a specialized ecological interaction with local insect populations. Following successful pollination, the plant produces seeds that exhibit a highly uniform mass profile. The seed mass is consistent across measurements, with a mean, minimum, and maximum value all recorded at 0.01398 g, suggesting a highly standardized seed production process within the species.

Pollination syndrome :

insect

Pollination syndrome :

biotic

Seed mass mean:

0.01398 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Kirkia wilmsii has 1 reported plant parts identified across 2 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf.

Leaf

1. Heliyon
2. Antibiotics (Basel, Switzerland)

Activities

Kirkia wilmsii has 2 reported activities identified across 2 scientific publications and several other databases. The most consistently reported activities include Antifungal, Antioxidant.

Antifungal

1. Heliyon

Antioxidant

1. Pharmaceutical biology

Conditions

Kirkia wilmsii has 7 reported investigations on conditions identified across 2 scientific publications and several other databases. The most consistently reported conditions include Aspergillus fumigatus, Candida albicans, Cryptococcus neoformans, Enterococcus faecalis, Pseudomonas aeruginosa.

Aspergillus fumigatus

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

Candida albicans

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

Cryptococcus neoformans

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

Enterococcus faecalis

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

Pseudomonas aeruginosa

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

Staphylococcus aureus

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

Tuberculosis

1. Antibiotics (Basel, Switzerland)

Preparations

Kirkia wilmsii has 2 reported preparations identified across 2 scientific publications and several other databases. The most consistently reported preparations include acetone leaf extracts, leaf and twig extracts.

Acetone leaf extracts

1. Heliyon

Leaf and twig extracts

1. Antibiotics (Basel, Switzerland)