Xylopia arenaria Engl.

First published in Bot. Jahrb. Syst. 34: 159 (1904)
This species is accepted
The native range of this species is SE. Kenya, E. Central Tanzania. It is a shrub or tree and grows primarily in the seasonally dry tropical biome.

Descriptions

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/158366/137047732

Conservation
VU - vulnerable
[IUCN]

Annonaceae, B. Verdcourt. Flora of Tropical East Africa. 1971

Morphology General Habit
Branched shrub or small tree 1–4.5(–?6) m. tall, with greyish-white bark; young branchlets reddish-brown, lenticellate, at first densely covered withspreading greyish hairs, later glabrescent.
Morphology Leaves
Leaf-blades elliptic to elliptic-lanceolate, 0.8–6 cm. long, 0.5–2.5 cm. wide, obtuse, acute or slightly acuminate at the apex, rounded at the base, thin, glabrous above, adpressed silky pilose beneath; venation not conspicuous; petioles slender, 2.5–4 mm. long, pilose.
Morphology Reproductive morphology Flowers
Flowers solitary, pendent; pedicels 2–3 mm. long, pubescent; bracteole pubescent, ? ± 1.5 mm. long.
Morphology Reproductive morphology Flowers Calyx
Sepals ovate-triangular, 2.5 mm. long, 2.5–3.5 mm. wide, pubescent outside.
Morphology Reproductive morphology Flowers Corolla
Petals grey-green, linear-lanceolate, widened at the base; outer 1–1.1 cm. long, 2 mm. wide above and 4 mm. wide at base; inner smaller, 7–8 mm. long, 1 mm. wide above, 3.5 mm. wide at the base; all silky outside with adpressed pale ferruginous hairs.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 1–1.5 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Carpels
Carpels 6–12, 1.5 mm. long; style short.
Morphology Reproductive morphology Fruits
Monocarps seen only in dehisced condition, probably red, oblong, 2 cm. or so long, several-seeded.
Morphology Reproductive morphology Seeds
Seeds brown, ellipsoid, 1 cm. long, 5.5 mm. wide, shining.
Habitat
Brachystegia woodland and open coastal bushland on sandy soil; 30–105 m.
Distribution
not known elsewhere K7 T6
[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: low confidence
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • Flora of Tropical East Africa

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

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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 2025. 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 2025. 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