Grewia robusta Burch.

Karoo crossberry (en)

Species

Angiosperms > Malvales > Malvaceae > Grewia

Characteristics

Small bush up to about 3 m tall, young branches densely stellate-puberulent or tomentellous, later glabrescent with smooth greyish or greyish purple bark; branches rather stiff. Leaves often clustered on abbreviated side-shoots; leaf-blade up to 20 x 16 mm, broadly elliptic, obovate, broadly ovate or rotund, apex obtuse, base rounded or slightly cordate, margin finely crenate or almost entire, densely stellate-puberulent above at first but soon glabrescent, greyish tomentellous below; petiole 1-2 mm long, tomentellous; stipules about 2 mm long, caducous, linear, tomentellous. Inflorescences reduced to a single flower opposite the leaves; peduncles 2-3 mm long, tomentellous; pedicels similar; bracts linear, similar to the sepals, very caducous. Sepals up to 15 x 3 mm, linear-lanceolate, apex subacute, 3-nerved and tomentellous outside, glabrous within. Petals pink or mauve, slightly shorter than the sepals, blade narrowly elliptic, basal nectariferous claw scarcely wider than the base of the blade, 1.5 mm long, circumvillous within but very densely so, pubescent at the back, ledged above. Androgynophore with a basal glabrous portion about 1 mm long, tomentose at the apex but scarcely produced beyond the basal glabrous portion except in fruit when this portion may attain a length of about 1 mm. Ovary shallowly 4-lobed, densely hirsute; style about 7 mm long, slender, glabrous; stigma-lobes broad. Fruit purplish, about 17 mm in diam., deeply 4-lobed often only 2 present, fleshy, sparsely hispid.
More
Small shrub, up to 3 m high; bark greyish purple. Leaves clustered on abbreviated side shoots; broadly elliptic to rotund, up to 20 x 16 mm, apex obtuse, base rounded, margins finely crenate. Inflorescences reduced to a single flower opposite leaves; peduncles 2-3 mm long, tomentellous. Flowers ± 15 mm long, pink or mauve. Sepals linear-lanceolate, up to 15 mm long. Petals shorter than sepals. Androgynophore with a basal glabrous portion of ± 1 mm long, tomentose at apex. Flowering time Aug.-May. Fruit purplish, ± 14 mm in diam., deeply 4-lobed, somewhat fleshy.
Shrub, up to 3 m tall, grey-velvety when young. Leaves discolorous, grey-velvety beneath, often clustered on short shoots, ovate, finely toothed. Flowers solitary opposite leaves, pink. Fruit 4-lobed, purplish.
Shrub to 3 m, grey-velvety when young. Leaves discolorous, grey-velvety beneath, often clustered on short shoots, ovate, finely toothed. Flowers solitary opposite leaves, pink. Fruits 4-lobed, purplish.
An erect evergreen shrub.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 3.0
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Flower color
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a Mediterranean climate plant. It grows in dry soil. It grows in areas with an annual rainfall between 150-200 mm. It grows between 300-600 m above sea level. It can grow in arid places.
Light -
Soil humidity -
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Hardiness (USDA) 9-11

Usage

The fruit are used as a vegetable.
Uses animal food environmental use food
Edible fruits
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
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Images

Grewia robusta unspecified picture

Distribution

Grewia robusta world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:834516-1
WFO ID wfo-0000710260
COL ID 3HDJW
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Grewia robusta Grewia krebsiana