Fabaceae
Vachellia

Vachellia walwalensis (Gilliland) Kyal. & Boatwr.

First published in Bot. J. Linn. Soc. 172: 518 (2013)
This species is accepted
The native range of this species is E. Ethiopia to Somalia. It is a shrub or tree and grows primarily in the desert or dry shrubland biome.

Descriptions

M. Thulin et al. Flora of Somalia Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Shrub up to 4 m high; young branchlets usually purplish-brown, conspicuously lenticellate, glabrous or almost so
Morphology General Spines
Stipular spines straight or slightly curved, 1–2.2 cm long
Morphology Leaves
Leaves with 2(–3) pairs of pinnae, the lower pair much shorter than the upper; leaflets 1–2 pairs on lower pinnae, 3–5(–7) pairs on upper, 6–15 x 3.5–9 mm, obliquely obovate or elliptic, veined, glabrous
Morphology Reproductive morphology Flowers
Flowers white, in heads; peduncles 2–4 cm long, finely pubescent; involucel at or somewhat below the middle of peduncle
Morphology Reproductive morphology Flowers Calyx
Calyx 3–3.5 mm long, pubescent
Morphology Reproductive morphology Flowers Corolla
Corolla 4.5–5.5 mm long, pubescent
Morphology Reproductive morphology Fruits
Pods straight or slightly curved, ± cylindrical and constricted between the seeds, dehiscent, (7–)9.5–16 x 1–1.5 cm, dark brown, longitudinally veined, puberulous
Morphology Reproductive morphology Seeds
Seeds blackish, ellipsoid to subglobose, 10–12 x 6.5–7.5 mm, punctate; areole 8–10 x 4–5 mm.
Distribution
C2; S2
Ecology
Altitude range 150–400 m.
Vernacular
Sirsiriq (Somali)
[FSOM]

International Legume Database and Information Service

Conservation
Insufficiently known
Ecology
Africa: Somalia-Masai bushland and thicket
Morphology General Habit
Perennial, Not climbing, Shrub
[ILDIS]

Sources

  • Flora of Somalia

    • Flora of Somalia
    • 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/

  • International Legume Database and Information Service

    • International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
    • http://creativecommons.org/licenses/by/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0