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This species is accepted, and its native range is NE. Tropical Africa to NE. Kenya.
A specimen from Kew's Herbarium

[FSOM]

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

Morphology General Habit
Woody-based perennial herb or subshrub, up to 40 cm tall, sometimes prostrate; young branches pubescent
Morphology Leaves
Leaves seemingly in whorls of 4, pubescent; blade narrowly elliptic to obovate, 1.5–5 x 0.5–2 cm, subacute to obtuse at the apex; petiole 0–2 cm long; spikes 2–3.5 cm long, sessile or with up to 0.5 cm long peduncle; sterile bracts lanceolate, mucronate to spine-tipped, puberulous; fertile bracts lanceolate, 13–20 mm long, gradually narrowing into long straight spine, ± pilose and ciliate, with 3 distinct longitudinal veins
Morphology Reproductive morphology Flowers Corolla
Corolla yellow or orange; tube 12–15 mm long; limb 10–15 mm long.
Distribution
N1–3; C1; S1, 2; Djibouti, Ethiopia, NE Kenya
Ecology
Altitude range 40–1500 m.

[FTEA]

Acanthaceae (part 2), Kaj Vollesen. Flora of Tropical East Africa. 2008

Type
Type: Ethiopia, near Harar, Mt Haqim, Hardegger s.n. (W holo.; K!, fragment & photo).
Morphology General Habit
Erect shrubby herb to 40 cm tall or perennial or shrubby herb with prostrate branches up to 20 cm long; young stems finely sericeous to puberulous
Morphology Leaves
Leaves in whorls of 4, sessile or petiole up to 5 mm long; lamina ovate, elliptic or obovate or narrowly so, largest (1.5–)3–6.5(–8) × 0.6–1.5(–3.2) cm, apex subacute to broadly rounded, sparsely to densely uniformly puberulous
Morphology Reproductive morphology Inflorescences
Spikes 1–3.5 cm long, sessile or peduncle up to 5 mm long, sericeous to puberulous; fertile bracts narrowly ovate, 13–20 × 2–4 mm, with a long cuspidate straight or slightly recurved pungent tip, sericeous-puberulous and pilose or densely so from long many-celled hairs, with strong central and two lateral longitudinal veins; bracteoles 15–22 mm long, with a long cuspidate straight or slightly recurved tip, sericeous-puberulous and pilose
Morphology Reproductive morphology Flowers Calyx
Sepals cuspidate, puberulous and pilose-ciliate towards tip, dorsal broadly ovate, 7–10 mm long, ventral ovate, 8–11 mm long, lateral 6–8 mm long.
Morphology Reproductive morphology Flowers Corolla
Corolla yellow (rarely apricot); tube 1.5–2 cm long; limb 1–1.5 cm long.
Morphology Reproductive morphology Fruits
Capsule ± 13 mm long, hairy at tip
Morphology Reproductive morphology Seeds
Seed ± 3 × 3 mm.
Ecology
Acacia-Commiphora bushland on rocky limestone slopes; ± 600 m
Note
The Kenyan collection has appressed indumentum and is erect. Most of the Ethiopian collections are perennial herbs with trailing stems and spreading indumentum. The Somalian collections are often more or less intermediate in habit as well as in indumentum, and at the moment I prefer to treat all as one variable species. At least some of the erect forms have apricot-coloured corollas, and if it could be confirmed that erect plants always have apricot flowers, a case might be made for recognising two taxa. But relying solely on corolla colour has proved unreliable in other parts of the genus, e.g. in C. spinescens from Zambia and Zimbabwe.
Distribution
Flora districts: K1 Range: Ethiopia, Djibouti, Somalia

Native to:

Djibouti, Ethiopia, Kenya, Somalia

Crossandra spinosa Beck appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Feb 13, 1897 Phillips, L. [s.n.], Somalia K000394657

First published in Paulitschke Harar: 459 (1888)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • Hedberg, I., Kelbessa, E., Edwards, S., Demissew, S. & Persson, E. (eds.) (2006). Flora of Ethiopia and Eritrea 5: 1-690. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Thulin, M. (ed.) (2006). Flora of Somalia 3: 1-626. The Royal Botanic Gardens, Kew.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.

Literature

Kew Backbone Distributions

  • Audru, J., Cesar, J. & Lebrun, J.-P. (1994). Les Plantes Vasculaires de la République de Djibouti. Flore Illustrée 1: 1-336. CIRAD, Départerment d'Elevage et de Médecine vétérinaire, Djibouti.

Flora of Somalia

  • Flora Somalia, (2000) Author: by M. Thulin [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • E.P.A.: 955 (1964)
  • F.E.E. 5: 367 (2006)
  • F.T.A. 5: 114 (1899)
  • Fl. Somalia 3: 386 (2006).
  • J.B. 39: 302 (1901)
  • K.B. 1941: 169 (1941)
  • K.B. 45: 516 (1990)
  • Kuchar, Pl. Somalia (CRDP Techn. Rep. Ser., no. 16): 245 (1986)
  • Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 476 (1997)
  • Paulitschke, Harar: 459, fig. 13 & 14 (1888)

Flora of Somalia
Flora of Somalia
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/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0