Tree nettle

Names and Synonyms

Common Names

• Rock Tree Nettle
• Tree Nettle

Scientific Names

Accepted name

Synonyms

• Urera tenax

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant, Obetia tenax, belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Magnoliidae, it is further classified under the order Rosales and the family Urticaceae. Ultimately, its taxonomic identity is defined by its placement within the genus Obetia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is widely distributed across several key regions within the southern part of the continent. In South Tropical Africa, its presence is documented in both Mozambique and Zimbabwe. Moving into the Southern Africa region, it can be found inhabiting the landscapes of Botswana. Its range also extends to the Cape Provinces, showcasing its adaptability to different climates. Finally, the species is well-established within the KwaZulu-Natal area.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Obetia tenax is characterized by its ability to thrive across a vast vertical gradient, occupying diverse environmental niches within its habitat. This species demonstrates significant adaptability to varying topographic conditions, maintaining a broad distribution that spans from low-lying areas at an elevation of 15 m AMSL to much higher reaches at a maximum elevation of 1830 m AMSL. This extensive elevational range suggests that the plant can tolerate a wide spectrum of temperature regimes, atmospheric pressures, and moisture availability, allowing it to colonize ecosystems ranging from coastal or lowland plains to montane environments.

Elevational range max:

1830 m AMSL

Elevational range min:

15 m AMSL

Life history

The life history of Obetia tenax is characterized by its status as a perennial species, allowing the plant to persist in its environment over many years through continuous growth and development. As a long-lived woody plant, it establishes a stable presence within its ecosystem, undergoing various stages of maturation that contribute to its structural complexity and longevity. This perennial nature ensures that the plant can survive through multiple seasonal cycles, maintaining its biological functions and reproductive potential across an extended lifespan.

Lifecycle :

perennial

Morphology

The morphology of Obetia tenax is characterized by a woody growth form that manifests as both a tree and a shrub. This plant is a terrestrial species that functions as an independent organism rather than a parasite or epiphyte. It is classified as a self-supporting plant, meaning it does not require climbing structures such as lianas or vines to maintain its stature. In terms of dimension, the plant exhibits significant vertical growth, with its height ranging from a minimum of 2 meters to a maximum of 7 meters, maintaining an average plant height of approximately 4 meters.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Growth form :

shrub

Parasite :

independent

Plant height max:

7 m

Plant height mean:

4 m

Plant height min:

2 m

Woodiness :

woody

Physiology

The physiology of Obetia tenax is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency in its natural habitat. Unlike plants utilizing C4 or CAM mechanisms, its carbon assimilation is primarily driven by the enzyme Rubisco within the mesophyll cells. Furthermore, the species does not function as a nitrogen fixer, meaning it lacks the symbiotic relationship with diazotrophic bacteria required to convert atmospheric nitrogen into usable forms, relying instead on the uptake of available nitrogen from the soil through its root system.

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Obetia tenax 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. Scientific reports

Chemicals

Obetia tenax has 4 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include CD, PB, VITAMIN E, Vitamin A.

CD

1. Scientific reports

PB

1. Scientific reports

VITAMIN E

1. Scientific reports

Vitamin A

1. Scientific reports

Activities

Obetia tenax has 2 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Antidiabetic, Antioxidant.

Antidiabetic

1. Scientific reports

Antioxidant

1. Scientific reports

Medicinal Uses

Obetia tenax has 1 reported medicinal uses identified across 1 scientific publications and several other databases. The most consistently reported uses include antidiabetic.

Most Reported Uses

Preparations