low-veld toadtree

Names and Synonyms

Common Names

• low-veld toadtree
• Lowveld Toadtree
• Warty Toadtree

Scientific Names

Accepted name

Synonyms

• Leptopharyngia elegans
• Conopharyngia elegans

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and the class Equisetopsida. It is classified under the subclass Magnoliidae and the order Gentianales, falling into the family Apocynaceae. Finally, it is categorized under the genus Tabernaemontana.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical distribution across several regions of the African continent. In Northeast Tropical Africa, it can be found growing in Somalia. Its presence extends into East Tropical Africa, specifically within the countries of Kenya and Tanzania. Moving southward, the species is also documented in South Tropical Africa. Within this southern region, the plant is located in both Malawi and Mozambique.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Tabernaemontana elegans is characterized by its adaptability to diverse topographical gradients and specific vegetative environments. This species typically thrives within bushland habitats, where it can establish itself amidst various scrubland and woody vegetation structures. Its altitudinal distribution is broad, spanning from sea level up to a maximum elevation of 1370 m AMSL. This significant elevational range, starting from 0 m AMSL, indicates a high tolerance for varying climatic conditions and pressure gradients, allowing the plant to colonize both lowland tropical zones and mid-elevation montane regions.

Elevational range max:

1370 m AMSL

Elevational range min:

0 m AMSL

Habitat :

bushland

Life history

The life history of Tabernaemontana elegans is characterized by its status as a perennial plant, allowing it to persist through multiple growing seasons. In terms of its structural growth habit, it is classified as a phanerophyte, meaning its perennating buds are located on aerial shoots well above the ground, typically forming woody shrubs or small trees. Additionally, it can be categorized as a nanophanerophyte, reflecting a growth form where the woody stems remain relatively low to the ground compared to larger forest canopy species.

Life form :

nanophanerophyte

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Tabernaemontana elegans is characterized by its growth form as a woody tree, which functions as a self-supporting structure rather than a climber. As an independent organism, it does not exhibit parasitic behavior and is strictly terrestrial in its habitat, neither being aquatic nor an epiphyte. The plant's stature varies significantly depending on environmental conditions, with a recorded minimum height of 1.5 m, a mean height of approximately 7 m, and a maximum potential height reaching up to 10 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

10 m

Plant height mean:

7 m

Plant height min:

1.5 m

Woodiness :

woody

Physiology

The physiology of Tabernaemontana elegans is characterized by its specialized metabolic pathways and distinct nutrient acquisition strategies. As a woody shrub or small tree, its physiological processes are centered on efficient photosynthesis and the synthesis of complex secondary metabolites, particularly indole alkaloids, which serve as chemical defense mechanisms against herbivory. Regarding its nutrient cycling and symbiotic relationships, the plant does not exhibit the capacity for biological nitrogen fixation; specifically, it is not a nitrogen fixer, meaning it lacks the symbiotic relationship with diazotrophic bacteria required to convert atmospheric nitrogen into usable forms. Instead, it relies on the uptake of nitrates and ammonium from the soil through its root system to support protein synthesis and overall vegetative growth. Its physiological vigor is closely tied to soil moisture availability and light intensity, which dictate its transpiration rates and the metabolic cost of maintaining its bioactive chemical profile.

Nitrogen fixer :

no

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Tabernaemontana elegans has 3 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, stem.

Leaf

1. Journal of nematology
2. Journal of ethnopharmacology

Root

1. Journal of natural products
2. Journal of ethnopharmacology

Stem

1. Journal of nematology

Chemicals

Tabernaemontana elegans has 9 reported phytochemicals identified across 5 scientific publications and several other databases. The most consistently reported chemicals include CORONARIDINE, Compound 7, Conodurine, Dregamine, Monoterpene Indole Alkaloids.

CORONARIDINE

1. Plant physiology and biochemistry : PPB

Compound 7

1. Journal of ethnopharmacology

Conodurine

1. Plant physiology and biochemistry : PPB

Dregamine

1. Journal of ethnopharmacology

Monoterpene Indole Alkaloids

1. International journal of molecular sciences

Pachysiphine

1. The Plant journal : for cell and molecular biology

Tabernaemontanine

1. Journal of ethnopharmacology

Tabersonine

1. The Plant journal : for cell and molecular biology

vinblastine

1. Plant physiology and biochemistry : PPB

Activities

Tabernaemontana elegans has 4 reported activities identified across 5 scientific publications and several other databases. The most consistently reported activities include Anticancer, Antibacterial, Antihypertensive, Antitumor.

Anticancer

1. The Plant journal : for cell and molecular biology
2. Plant physiology and biochemistry : PPB

Antibacterial

1. International journal of molecular sciences

Antihypertensive

1. The Plant journal : for cell and molecular biology

Antitumor

1. The Plant journal : for cell and molecular biology

Conditions

Tabernaemontana elegans has 17 reported investigations on conditions identified across 5 scientific publications and several other databases. The most consistently reported conditions include Helicobacter pylori, Mycobacterium smegmatis, Mycobacterium tuberculosis H37Rv, antihypertensive, cancer.

Helicobacter pylori

1. International journal of molecular sciences

Mycobacterium smegmatis

1. Microorganisms

Mycobacterium tuberculosis h37rv

1. Journal of ethnopharmacology

Antihypertensive

1. The Plant journal : for cell and molecular biology

Cancer

1. Journal of ethnopharmacology

Colon cancer

1. Journal of ethnopharmacology

Colorectal cancer

1. Journal of ethnopharmacology

Gastric cancer

1. International journal of molecular sciences

Gastric ulcers

1. International journal of molecular sciences

Gastrointestinal diseases

1. International journal of molecular sciences

Preparations

Tabernaemontana elegans has 3 reported preparations identified across 5 scientific publications and several other databases. The most consistently reported preparations include Crude methanol and water extracts, ethyl acetate extract, lipophilic extracts.

Crude methanol and water extracts

1. Human & experimental toxicology

Ethyl acetate extract

1. Journal of ethnopharmacology

Lipophilic extracts

1. Journal of ethnopharmacology