Obetia tenax (N.E.Br.) Friis

Species

Angiosperms > Rosales > Urticaceae > Obetia

Characteristics

Shrub or small tree up to 5 m high. Branches densely covered with long stinging hairs or glabrous, purplish brown to grey, often longitudinally striate, gnarled with large leaf scars, wood soft and fibrous, with wide spongy pith or hollow in centre. Leaves with lamina broadly ovate in outline, 35-130(-170) x 35-115(-190) mm, sometimes shallowly lobed, base usually truncate, rarely deeply cordate, margin with 12-22 pairs of broad irregular teeth, upper surface with scattered stinging and stiff hairs, lower surface with scattered stiff hairs and stinging hairs along veins; petiole up to 120 mm long; stipules lanceolate, 4-8 x 1-2.5 mm, with long-acuminate apex, glabrous. Inflorescence of profusely branched panicles, up to 100 mm long; peduncle with stinging hairs. Female flowers single or in small clusters along axes and branches of inflorescence, shortly pedicellate, glabrous, ±1.25 mm long. Male flowers in denser inflorescences, ±2 mm in diameter, usually with stinging hairs on tepals. Achenes laterally compressed, rugose over whole surface, ±1.5 mm long, ochre to brown, papery perianth persisting and enlarging to length of ±2 mm.
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Perennial, small tree or shrub, 2-7 m high. Leaves round to ovate, 50-150 x 30-100 mm, sometimes slightly 3-lobed, covered with stinging hairs above, pubescent when young, later glabrescent, apex rounded to acute, margins coarsely toothed; petioles up to 80 mm long; stipules up to 8 mm long, free, lanceolate. Inflorescence mostly in axils of fallen leaves; male inflorescence up to 150 mm long; peduncle with stinging hairs. Male flowers 5-merous, bracteate, ± 1 mm in diam. Female flowers 4-merous, pedicellate, glabrous, ± 1.25 mm long. Flowering time Nov. Fruit small achenes, up to 3 mm in diam., with persisting perianth, ochre to brown.
A small tree. It loses its leaves during the year. It grows 2-7 m tall. It has soft wood. The bark is pinkish-brown and smooth. The branches have stinging hairs. Male and female flowers are probably on separate trees. The leaves are simple and alternate. They are round or heart shaped with deep teeth along the edge. The leaves are 5-15 cm long by 3-10 cm wide. They are oval but can have 3 lobes. The flowers are in short clusters in the axils of leaves. They are pinkish-green.
Shrub or small tree, up to 5 m high. Stipules 1.0-2.5 mm broad, entirely glabrous. Leaf lamina not bullate. Stamens white. Flowers (perianth) green.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 4.0 - 5.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a subtropical plant. It grows in rocky ravines in bushland. It is often on granite outcrops between 1,000-1,400 m above sea level. It is often in hot dry places.
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Rocky ravines in deciduous bushland; very frequently on granite outcrops at elevations from 1,000-1,400 metres.
Light -
Soil humidity -
Soil texture 7-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

The leaves are cooked and eaten as a spinach.
Uses fiber food gene source material medicinal poison vertebrate poison wood
Edible leaves
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Obetia tenax unspecified picture

Distribution

Obetia tenax world distribution map, present in Botswana, Mozambique, eSwatini, South Africa, and Zimbabwe

Conservation status

Obetia tenax threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:912877-1
WFO ID wfo-0001143523
COL ID 74DFZ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Obetia tenax Urera tenax