Ehretia rigida (Thunb.) Druce

First published in Rep. Bot. Soc. Exch. Club Brit. Isles 4: 620 (1916 publ. 1917)
This species is accepted
The native range of this species is S. Central & S. Cape Prov. It is a shrub or tree and grows primarily in the desert or dry shrubland biome.


Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E.

Predicted extinction risk: not threatened. Confidence: confident

Boraginaceae, E. S. Martins (Trichodesma by R. K. Brummit). Flora Zambesiaca 7:4. 1990

Morphology General Habit
A small tree up to 6 m. high or more often a many-stemmed shrub 0.8–4.5 m. high, deciduous; branches glabrous, light-grey to dark-grey.
Morphology Leaves
Leaves arranged either alternately on long juvenile shoots or crowded at the ends of short shoots, these sometimes only vestigial.
Morphology Leaves Petiole
Petiole up to 0.4 cm. long or absent, very rarely up to 0.8 cm. long.
Morphology Leaves Leaf lamina
Lamina 1.2–4.0(8.0) x 0.5–2.5(4.0) cm., obovate or sometimes varying from ovate to oblanceolate, sometimes shortly hispid on both surfaces, more often glabrous except by some rigid acroscopic appressed hairs on the margin or quite glabrous, apex rounded or rarely subacute, base narrowly tapering into a short petiole, margins entire, papery to leathery, with 3–4 secondary nerves on each side of the midrib, usually not prominent, sometimes hardly perceptible, often with sparingly pilose acarodomatia at the axils.
Morphology Reproductive morphology Flowers
Flowers hermaphrodite, 5-merous, arranged in corymbs 1–3(4) cm. long, usually few-flowered, sessile or shortly pedunculate, puberulous or shortly hispid, terminal on the shoots or on the short-shoots; pedicels 0.2–2.0(4.0) mm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx 1.5–2.5 mm. long, variably lobed from above middle to near base, pubescent to subglabrous outside and inside; lobes narrowly triangular to oblong, acute to rounded at apex, ciliate.
Morphology Reproductive morphology Flowers Corolla
Corolla mauve to pale blue or white or, a few times purple; tube 3–4(6) mm. long, cylindrical or narrowly funnel-shaped, glabrous; lobes 2.5–4.0 x 1.5–2.0 mm., ovate to oblong, rounded at apex, ciliate, spreading.
Morphology Reproductive morphology Flowers Androecium Stamens
Anthers 1.0–1.5 mm. long, sagittate-oblong; filaments 2.5–3.5(5.0) mm. long, slender.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary glabrous; style 4.0–6.5 mm. long, divided 1/52/5 -way down; stigmas truncate, sometimes umbilicate.
Morphology Reproductive morphology Fruits
Fruit c. 5 x 7 mm., fleshy, glabrous, orange to red when ripe; pyrenes 4 with the out surface irregularly reticulate-foveate.


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