Annonaceae
Dielsiothamnus

Dielsiothamnus divaricatus (Diels) R.E.Fr.

First published in Ark. Bot., prepr., a.s., 3: 36 (1953)
This species is accepted
The native range of this species is S. Tanzania to N. Mozambique. It is a scrambling shrub or tree and grows primarily in the seasonally dry tropical biome.

Descriptions

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/132516889/132517013

Conservation
LC - least concern
[IUCN]

Annonaceae, N. K. B. Robson. Flora Zambesiaca 1:1. 1960

Morphology General Habit
Shrub or small tree, sometimes scrambling or climbing, up to 4 m. high or higher; bark flaking.
Morphology Branches
Branches spreading, rather sparsely stellate-tomentose at first, soon glabrous, with prominent and persistent leaf-bases.
Morphology Leaves
Leaves petiolate; lamina 8–17 (24) x 4–9.7 cm., obovate, acuminate at the apex, cordate or rounded at the base, membranous, concolorous, sparsely stellate-pubescent above (at least along the nerves) or sometimes almost glabrous, more densely stellate-pilose below, with venation prominent below but not above; petiole 3–7 mm. long, stellate-tomentose.
Morphology Reproductive morphology Flowers
Flowers solitary (? or in few-flowered groups), axillary, on leafless shoots; pedicels c. 5 mm. long, rusty-stellate-pubescent; bracteoles ovate-orbicular, cucullate, densely brown-pubescent outside, almost glabrous within, enclosing the bud, caducous.
Morphology Reproductive morphology Flowers Calyx
Sepals 5–7 mm. long, triangular or orbicular-ovate, acute or apiculate, brown, stellate-velutinous outside, greyish-tomentose within.
Morphology Reproductive morphology Flowers Corolla
Petals brownish-yellow, thick, rather fleshy, subequal (6) 8–10 (12) mm. long, triangular-ovate, obtuse or apiculate, shortly grey-stellate-pubescent outside, glabrous within (except sometimes round the margin).
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 1.5–2 mm. long, linear or obconic, glabrous.
Morphology Reproductive morphology Flowers Gynoecium Carpels
Carpel densely pubescent.
Morphology Reproductive morphology Fruits
Fruit on a pedicel c. 15 mm. long; fruiting carpel several-seeded, 5 x 3–4 cm. when ripe, cylindric, not constricted between the seeds, not usually apiculate, with scattered stellate hairs, rugose, oily, green when immature, probably ripening to yellowish, sessile or sub-sessile.
Morphology Reproductive morphology Seeds
Seeds c. 2 x 1 cm., bean-like.
[FZ]

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: threatened. Confidence: low confidence
[AERP]

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

  • 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