elephant-bush

Names and Synonyms

Common Names

• elephant-bush
• Common Spekboom
• Elephant Food
• Elephant bush
• Elephant's Food
• Elephant-Food
• Porkbush

Scientific Names

Accepted name

Synonyms

• Portulacaria afra f. variegata
• Portulacaria afra f. macrophylla
• Portulacaria afra f. microphylla
• Crassula portulacaria
• Crassula portulacastrum
• Claytonia portulacaria

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 the class Equisetopsida. As a member of the subclass Magnoliidae and the order Caryophyllales, it is further categorized under the family Didieraceae. Finally, its specific taxonomic placement is defined by the genus Portulacaria.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a wide geographical distribution spanning across several continents. In Europe, it can be found in Spain within the southwestern region and in Sicilia throughout the southeast. Its presence extends into East Tropical Africa, specifically within the borders of Kenya. Additionally, it is located in Mozambique, which is part of South Tropical Africa. Finally, the species is also distributed across the Cape Provinces in Southern Africa.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Portulacaria afra is characterized by its remarkable adaptability to diverse environmental conditions, allowing it to thrive across a broad altitudinal gradient. This succulent species is found inhabiting landscapes ranging from sea level up to a maximum elevation of 1400 m AMSL. Its distribution spans from coastal lowlands to more elevated terrains, where it frequently occupies rocky outcrops, scrublands, and semi-arid environments. The plant is particularly well-adapted to nutrient-poor soils and can withstand varying levels of moisture availability, making it a resilient component of its native ecosystems. Its ability to colonize such a wide elevational range—from 0 m AMSL to 1400 m AMSL—underscores its physiological flexibility in responding to the shifting climatic and topographical nuances of its habitat.

Elevational range max:

1400 m AMSL

Elevational range min:

0 m AMSL

Life history

The life history of Portulacaria afra is characterized by a perennial lifecycle, allowing the plant to persist through multiple growing seasons. It exhibits a complex growth habit that can be classified under different life forms depending on environmental conditions and structural development, ranging from a phanerophyte to a nanophanerophyte. Furthermore, the plant maintains an evergreen deciduousness, ensuring that its foliage remains functional throughout the year without the seasonal shedding of leaves typical of deciduous species.

Deciduousness :

evergreen

Life form :

nanophanerophyte

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Portulacaria afra is characterized by its growth form as a woody shrub that functions as a self-supporting plant. It is a terrestrial species, existing independently rather than as a parasite or an epiphyte. In terms of stature, the plant exhibits significant vertical development, with a height that typically ranges from a minimum of 1 m to a maximum of 4.5 m, maintaining an average plant height of approximately 2.5 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Parasite :

independent

Plant height max:

4.5 m

Plant height mean:

2.5 m

Plant height min:

1 m

Woodiness :

woody

Physiology

The physiology of Portulacaria afra is characterized by its specific metabolic and nutritional adaptations, most notably its utilization of the C3 photosynthetic pathway to facilitate carbon fixation. Unlike some succulent species that employ Crassulacean Acid Metabolism (CAM) to conserve water, this plant operates via C3 metabolism, which dictates its gas exchange patterns and energy conversion processes. In terms of nutrient cycling and soil interaction, the species does not function as a nitrogen fixer, meaning it lacks the symbiotic relationship with diazotrophic bacteria required to convert atmospheric nitrogen into bioavailable forms; instead, it relies on the uptake of nitrogenous compounds directly from the soil substrate to support its growth and cellular functions.

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Reproduction

The reproduction of Portulacaria afra is characterized by a predominantly biotic pollination syndrome, relying on living organisms rather than abiotic factors to facilitate genetic exchange. Specifically, the plant exhibits a pollination syndrome driven by insects, which serves as the primary mechanism for transferring pollen between flowers. This insect-mediated process is diverse, involving a variety of pollinators such as bees, beetles, ants, butterflies, moths, and flies, all of which contribute to the plant's reproductive success through biotic interaction.

Pollination syndrome :

insect

Pollination syndrome :

biotic

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Portulacaria afra 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 leaf.

Leaf

1. Pakistan journal of biological sciences : PJBS

Chemicals

Portulacaria afra has 9 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Alkanes, Alkenes, Esters, Fatty acids, Flavonoids.

Alkanes

1. Pakistan journal of biological sciences : PJBS

Alkenes

1. Pakistan journal of biological sciences : PJBS

Esters

1. Pakistan journal of biological sciences : PJBS

Fatty acids

1. Pakistan journal of biological sciences : PJBS

Flavonoids

1. Pakistan journal of biological sciences : PJBS

Phenanthrenes

1. Pakistan journal of biological sciences : PJBS

Phenols

1. Pakistan journal of biological sciences : PJBS

Steroids

1. Pakistan journal of biological sciences : PJBS

triterpenoids

1. Pakistan journal of biological sciences : PJBS

Activities

Portulacaria afra has 6 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Analgesic, Antibacterial, Antidiabetic, Antifungal, Antioxidant.

Analgesic

1. Pakistan journal of biological sciences : PJBS

Antibacterial

1. Pakistan journal of biological sciences : PJBS

Antidiabetic

1. Pakistan journal of biological sciences : PJBS

Antifungal

1. Pakistan journal of biological sciences : PJBS

Antioxidant

1. Pakistan journal of biological sciences : PJBS

Antiplasmodial

1. Pakistan journal of biological sciences : PJBS

Medicinal Uses

Portulacaria afra has 8 reported medicinal uses identified across 1 scientific publications and several other databases. The most consistently reported uses include diarrhea, earaches, fever, hypertension, mouth ulcers.

Most Reported Uses

Preparations