Grewia retinervis Burret

Species

Angiosperms > Malvales > Malvaceae > Grewia

Characteristics

Small bush 1-2 m tall, usually branching low down; young stems brownish pubescent or glabrescent, older branches somewhat compressed not becoming 4-angled and grooved. Leaf-blade 20-50 x 10-28 mm, elliptic-oblong, acute or rounded at the apex, rounded at the base, margins serrate, sparsely pubescent above or glabrous, nerves reticulate on both sides, slightly pubescent below; petiole 1-3 mm long, pubescent; stipules about 2.5 mm long, subulate, pubescent. Inflorescences all axillary; peduncles 3-6 mm long, pubescent; pedicels 2-3 together, 2-4 mm long, pubescent; basal bracts about 2 mm long, entire, lanceolate-triangular, pubescent. Buds oblong, somewhat sulcate. Sepals 6-8 x 1 mm, lorate, appressed pubescent outside, glabrous within. Petals yellow, 5-7 x 1.5 mm, narrowly oblong or lorate, with a basal nectariferous claw 1 mm long and circumvillous within. Androgynophore 1 mm long, glabrous, not extended above the node, rather cupular at the apex and clasping the ovary base. Ovary appressed pubescent, never lobed; style 8-9 mm long, glabrous; stigmas usually 4, subulate. Fruit about 8 mm in diam., globose, never lobed, shining, reddish brown, minutely and sparsely stellate-pubescent.
More
A shrub or small tree. It can be 4 m high. The bark is brown. The branches are round, not 4 angled. The leaves are smooth. The veins form a net. The leaves are oblong and 2.5-5 cm long by 1-3 cm wide. The flowers are bright yellow and 1.5 cm across. The occur in groups of 2-3 in the axils of leaves. The fruit are red-brown, shiny and round. The fruit are edible.
Leaf-lamina 2–5 × 1–2·75 cm., elliptic-oblong, acute or rounded at the apex, with margins serrate, rounded at the base, sparsely pubescent above or glabrous; nerves reticulate on both sides, slightly pubescent below; petiole 1–3 mm. long, pubescent; stipules c. 2·5 mm. long, subulate, pubescent.
Inflorescences all axillary; peduncles 3–6 mm. long, pubescent; pedicels 2–3 together, 2–4 mm. long, pubescent; basal bracts c. 2 mm. long, entire, lanceolate-triangular, pubescent.
Small shrub 1–2 m. tall, usually branching low down; young sterns brownish-pubescent or glabrescent; older branches not becoming 4-angled and grooved.
Shrub, 1-2 m high. Leaves sparsely pubescent or glabrous, nerves reticulate on both sides. Fruit globose, not lobed. Flowers yellow.
Petals yellow, 5–7 × 1·5 mm., narrowly oblong or lorate, with a basal nectariferous claw 1 mm. long and circumvillous within.
Androgynophore 1 mm. long, glabrous, not extended above the node, rather cupular at the apex and clasping the ovary-base.
Fruit shining, reddish-brown, c. 8 mm. in diam., globose, never lobed, minutely and sparsely stellate-pubescent.
Ovary appressed-pubescent, never lobed; style 8–9 mm. long, glabrous; stigmas usually 4, subulate.
Sepals 6–8 × 1 mm., lorate, appressed-pubescent outside, glabrous within.
Flower-buds oblong, somewhat sulcate.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0 - 2.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

A tropical plant. It grows in dry sandy places. It is often in Kalahari sand. It grows in areas with an annual rainfall between 200-600 mm. It grows between 410-1950 m above sea level. It can grow in arid places.
More
Open woodland; on Kalahari sand formations; at elevations from 410-1,950 metres.
Light -
Soil humidity -
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

The fruit are eaten raw or dried. The fruit can be dried and stored. The fruit can be crushed and made into a drink.
Uses animal food environmental use food fuel gene source invertebrate food material medicinal social use
Edible fruits
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

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

Distribution

Grewia retinervis world distribution map, present in Angola, Botswana, South Africa, Zambia, and Zimbabwe

Conservation status

Grewia retinervis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:834501-1
WFO ID wfo-0000710244
COL ID 6KSNC
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Vinticena retinervis Grewia retinervis Grewia deserticola Vincentia retinervis