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This species is accepted, and its native range is N. Central & E. Tropical Africa.
A specimen from Kew's Herbarium

[FTEA]

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

Type
Type: Kenya, Kitui, Hildebrandt 2716 (K!, lecto.; BM!, P!, iso., selected by Napper).
Morphology General Habit
Acaulescent perennial herb from woody rootstock (rarely with stems up to 5 cm long)
Morphology Leaves
Leaves in a rosette, usually pressed to the ground, sessile or with petiole up to 1(–5) cm long; lamina ovate, elliptic or obovate, largest 4–20 × 1.5–6.5 cm, apex acute to broadly rounded (rarely retuse), subglabrous to densely puberulous
Morphology Reproductive morphology Inflorescences
Spikes 2–12 cm long; peduncle 1–20 cm long, puberulous to pubescent or sparsely so; fertile bracts oblong-obovate or narrowly so, 16–26 × 6–10 mm, length/width-ratio 2.4–3.3(–3.7), concave (with distinct “shoulders”) below a recurved pungent mucro 0.5–5 mm long, finely sericeous-puberulous or sparsely so and ciliate or densely so on edges and back, sometimes with a few capitate glands, with 3–5 strong longitudinal veins and slightly raised reticulum; bracteoles 13–24(–27) mm long, puberulous and densely pilose-ciliate
Morphology Reproductive morphology Flowers Calyx
Sepals cuspidate, sparsely puberulous and sparsely to densely pilose on back (sometimes only on midrib), glabrous towards base, ciliate or densely so, dorsal elliptic or broadly so, 9–14 mm long, ventral ovateelliptic, 10–17 mm long, lateral 7–12 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla pale orange to orange or salmon pink to bright red; tube yellow, 15–26 mm long, bent near insertion of stamens, upper part infundibuliform; limb 12–22 mm long
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted near middle of tube
Morphology Reproductive morphology Fruits
Capsule 9–14 mm long
Morphology Reproductive morphology Seeds
Seed ± 4 × 3.5 mm.
Ecology
Fireswept grassland, Acacia wooded grassland and bushland, Combretum-Terminalia wooded grassland and bushland, Acacia-Commiphora bushland, Brachystegia woodland; 450–2000 m
Note
Clarke (l.c.) cites a specimen from Mozambique, Boror, Peters s.n. which is no longer extant. This is the only record from Mozambique. But four of the other collections cited by Clarke as C. subacaulis are actually stunted specimens of C. mucronata (see p. 144), and similar stunted specimens of C. mucronata are known from Zimbabwe. It is therefore possible that the Peters-specimen – from an area not very far from Zimbabwe – was a similar specimen. On the other hand, proper C. subacaulis does occur as far south as Lindi in T 8, and it most likely occurs at least in N Mozambique as well.
Distribution
Range: Central African Republic, Congo-Kinshasa, Sudan, ?Mozambique Flora districts: U1 U4 K4 K5 K6 K 7 T1 T2 T3 T4 T6 T8

Native to:

Central African Repu, Kenya, Sudan, Tanzania, Uganda, Zaïre

Crossandra subacaulis C.B.Clarke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 1987 Smith, C.S. [s.n.], Tanzania K000394643 syntype
Feb 19, 1897 Freeman [76], Sudan K000394654 syntype
Feb 19, 1897 Schweinfurth, G. [2213], Sudan K000394656 syntype
Feb 13, 1897 Volkens, G. [2130], Tanzania K000394644 syntype
Tanner, R. [486], Tanzania 13071.000
Drummond, R.B. [2040], Tanzania 13072.000
Johnston, H.H. [s.n.], Tanzania K000394645 syntype
Johnston, H.H. [s.n.], Tanzania K000394646 syntype
Petherik [s.n.], Sudan K000394655 syntype

First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 5: 116 (1899)

Accepted by

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.

Literature

Flora of Tropical East Africa

  • Biol. Skr. 51(2): 440 (2005).
  • Blundell, Wild Fl. Kenya: 104, pl. 32 (1982)
  • Bot Mag. 156: t. 9336 (1933)
  • F.P.S. 3: 172 (1956)
  • F.T.A. 5: 116 (1899)
  • Jex-Blake, Wild Fl. Kenya: 107, fig. 86 (1948)
  • Johnstone, Uganda Protec. 1: 341 (1902)
  • K.B. 24: 337 (1970)
  • K.B. 45: 520 (1990)
  • Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 476 (1997)
  • N.B.G.B. 9: 498 (1926)
  • U.K.W.F. ed. 2: 274 (1994)
  • U.K.W.F.: 581 (1974)

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