Malvaceae
Grewia

Grewia holstii Burret

First published in Bot. Jahrb. Syst. 45: 157 (1910)
This species is accepted
The native range of this species is S. Somalia to N. Mozambique. It is a shrub or tree and grows primarily in the seasonally dry tropical biome.

Descriptions

Tiliaceae, C. Whitehouse, M. Cheek, S. Andrews & B. Verdcourt. Flora of Tropical East Africa. 2001

Morphology General Habit
Shrub to 4 m tall, sometimes scandent to 10 m tall, with flat spreading branches; old branches fluted, 3–4-angled with bases of old branches appearing like blunt thorns.
Morphology Leaves
Leaves elliptic to ovate-elliptic, 2.5–7(–12) cm long, 1.3–2.7(–3.7) cm wide, acute to acuminate at the apex, slightly cordate to truncate at the base, margin serrate, undulating, glossy green and concolorous, sometimes reddish when new, lamina dotted with stellate hairs above, slightly denser beneath especially on the veins; petiole 2–3.5(–8) mm long.
Morphology Reproductive morphology Inflorescences
Inflorescence a 3-flowered cyme, 1–2 in a leaf-axil; peduncle 4–6 mm long; pedicels 4–8 mm long.
Morphology Reproductive morphology Flowers
Flowers yellow, greyish to reddish green on the outside; sepals 7–11 mm long; petals 4–7 mm long, acute at the apex, sometimes reddish at the base.
Morphology Reproductive morphology Flowers Androgynophore
Androgynophore 1 mm long, glabrous, cupped at the apex.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 6–7 mm long, yellow.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary densely pubescent; style 6 mm long, yellow, glabrous; stigma greenish.
Morphology Reproductive morphology Fruits
Fruit obovate to subglobose, 8–11 mm long, 7–11 mm wide, unlobed or slightly 2-lobed, dark green becoming cream or brown when old.
Figures
Fig. 3/28 (leaf, p. 9).
Habitat
Forest, forest-edges and clearings, thicket and bushland; 0–650(–1000) m
Distribution
K7 T3 T6 T8
[FTEA]

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. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Tiliaceae, H. Wild. Flora Zambesiaca 2:1. 1963

Morphology General Habit
Shrub or small tree up to 8 m. tall or liane climbing over tall trees; young branches pubescent, soon becoming glabrous; older stems 3–4-angled, blackish and sometimes developing stout spine-like bosses.
Morphology Leaves
Leaf-lamina 3–6 × 1·5–3 cm., elliptic or lanceolate-elliptic, acute to acuminate at the apex, margin serrate, rounded or subcordate at the base, subglabrous, with minute scattered appressed-stellate hairs on both sides; petiole 0·2–0·3 cm. long, pubescent; stipules up to 5 mm. long, subulate to linear, slightly pubescent.
Morphology Reproductive morphology Inflorescences
Inflorescences all axillary; peduncles c. 5 mm. long, slightly pubescent; pedicels usually 3 together, c. 5 mm. long, slightly pubescent.
Morphology General Buds
Flower-buds oblong, hardly swollen at the base.
Morphology Reproductive morphology Flowers Calyx
Sepals up to 1·2 cm. long, linear-oblong, sparsely pubescent and greenish outside, yellow and glabrous within.
Morphology Reproductive morphology Flowers Corolla
Petals yellow, slightly shorter than the sepals, glabrous except for the nectariferous base, which is up to 1 mm. long circumvillous within and setose-pubescent on the back.
Morphology Reproductive morphology Flowers Androgynophore
Androgynophore 1 mm. long, glabrous and shallowly cup-like at the apex, clasping the ovary.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary ovoid, pubescent, not at all lobed; style c. 7 mm. long, glabrous, with 4 subulate stigma-lobes.
Morphology Reproductive morphology Fruits
Fruit 5–8 mm. in diam., globose, not lobed, yellowish, very minutely stellate-pubescent.
[FZ]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/143714861/143714863

Conservation
LC - least concern
[IUCN]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0