Bastard White Ash

Names and Synonyms

Common Names

• False Bersama
• False White-Ash
• Mock White Ash

Scientific Names

Accepted name

Synonyms

• Bersama mossambicensis

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant, Pseudobersama mossambicensis, belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Magnoliidae, it is classified under the order Sapindales and the family Meliaceae. It is further categorized under the genus Pseudobersama.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is distributed across several distinct regions within the African continent. In East Tropical Africa, its presence is documented in both Kenya and Tanzania. Moving further south, it can be found within the borders of Mozambique in South Tropical Africa. Additionally, the species extends into the Southern Africa region, specifically within KwaZulu-Natal. Together, these locations highlight a broad range spanning from East to Southern Africa.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Pseudobersama mossambicensis is characterized by its distribution across a specific vertical gradient within its natural habitat. This species thrives within an elevational range that begins at low-lying areas as low as 10 m AMSL and extends up to a maximum altitude of 500 m AMSL. This altitudinal span suggests that the plant is adapted to lowland and sub-montane environments, occupying diverse ecological niches shaped by the varying environmental pressures found between sea level and mid-elevation terrains.

Elevational range max:

500 m AMSL

Elevational range min:

10 m AMSL

Life history

The life history of Pseudobersama mossambicensis is characterized by its status as a perennial organism, allowing it to persist through multiple growing seasons and establish a long-term presence within its ecological niche. Unlike seasonal plants that complete their cycle within a single year, this species maintains its biological functions over an extended duration. Furthermore, its physiological development is marked by an evergreen habit, meaning it retains its foliage throughout the year rather than undergoing a period of seasonal leaf shedding. This constant presence of green biomass suggests a continuous photosynthetic capability and a stable structural form regardless of seasonal shifts.

Deciduousness :

evergreen

Lifecycle :

perennial

Morphology

The morphology of Pseudobersama mossambicensis is characterized by its growth form as a woody tree. This terrestrial species is independent, functioning neither as a parasite nor as an epiphyte. As a self-supporting organism, it maintains a robust structure with a plant height that typically ranges from a minimum of 3.5 m to a maximum of 12 m, with an average height of approximately 11.5 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

12 m

Plant height mean:

11.5 m

Plant height min:

3.5 m

Woodiness :

woody

Physiology

The physiology of Pseudobersama mossambicensis is characterized by complex metabolic pathways tailored to its specific ecological niche, particularly regarding its nutrient acquisition strategies. In terms of its interaction with soil nutrients, the plant does not function as a nitrogen fixer, meaning it lacks the symbiotic relationship with diazotrophic bacteria, such as Rhizobium, required to convert atmospheric nitrogen into ammonia. Consequently, its physiological processes for nitrogen assimilation rely entirely on the uptake of nitrates or ammonium ions present in the soil through its root system. This metabolic dependency necessitates an efficient rhizosphere management system to optimize the absorption of available mineral nitrogen to support protein synthesis and chlorophyll production. Beyond nitrogen metabolism, the plant's physiological profile involves intricate regulation of water potential and photosynthetic efficiency to maintain cellular homeostasis and energy production in varying environmental conditions.

Nitrogen fixer :

no

Reproduction

The reproduction of Pseudobersama mossambicensis is characterized by a specific reproductive strategy and highly uniform seed morphology. This species does not engage in self-fertilization, as the trait is documented as absent, suggesting a reliance on cross-pollination mechanisms to ensure genetic diversity. The resulting seeds exhibit absolute consistency in their physical dimensions, with a recorded seed mass that remains constant across all observations. Specifically, the seed mass shows no variance, maintaining a minimum, maximum, and mean value of exactly 0.078 g.

Seed mass mean:

0.078 g

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Pseudobersama mossambicensis has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include STIGMASTEROL.

STIGMASTEROL

1. Journal of natural products