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This species is accepted, and its native range is Kenya to E. DR Congo and Mozambique.
A specimen from Kew's Herbarium

[FTEA]

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

Type
Type: Uganda, Ruwenzori Mts, Kivata, Scott Elliot 7666 (K!, holo.; BM!, iso.)
Morphology General Habit
Strongly aromatic shrub or tree to 8 m tall, often thicket-forming, sometimes with stilt roots, basal “trunk” to 10 cm in diameter; young stems glabrous (rarely with scattered long curly many-celled broad hairs)
Morphology Leaves
Leaves with petiole of stem-leaves 5–20(–25) cm long; lamina of stem-leaves broadly cordiform-reniform, largest 11–26(–33) × 10–27(–32) cm, upwards smaller and narrower, apex triangular, base cordate or deeply so (upper subcordate to truncate) with sinus 1–3.5 cm deep, margin grossly doubly dentate with large triangular teeth 2–5 cm long, glabrous or with scattered long curly many-celled broad hairs, usually only along veins
Morphology Reproductive morphology Inflorescences
Inflorescence narrowly racemiform, (5–)10–30(–40) cm long; branches erect, 0.5–2.5 cm long near base, shorter upwards (rarely with two longer lateral branches from basal nodes); flowers in 3-flowered cymes; bracts caducous, greenish white, boat-like and clasping partial inflorescences, up to 4.5 × 3.5 cm; branches and bracts glabrous to densely glandular-pubescent; pedicels to 5(–10) mm long
Morphology Reproductive morphology Flowers Calyx
Calyx glandular-pubescent with broad glossy hairs, 19–38(–55 in fruit) mm long along dorsal lobe which is 1–2 mm longer than the others; lobes linear to oblanceolate, 1–5(–7) mm wide, acute or subacute
Morphology Reproductive morphology Flowers Corolla
Corolla white to cream with dark brown throat, lower lip yellow with white hairs, 30–41 mm long, cylindric tube 8–13 mm, throat 8–12 mm, dorsal and lateral lobes broadly elliptic, 8–11 × 8–12 mm, lower lip oblong 14–17 × 8–10 mm, dorsal lobes without ring of stiff hairs and lateral only with a few; papillate area on lower lip ovate, 10–13 mm long, covering almost the whole of the lobe
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Free part of filaments 3–5 mm long and free fused part similar length, hairy; anthers 5–7 mm long, spur ± 1 mm long
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma 2–3 mm long, dorsal lobe absent.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary hairy near apex
Morphology Reproductive morphology Fruits
Capsule 35–50 mm long, glabrous but for a few hairs near apex
Morphology Reproductive morphology Seeds
Seed 7–9 × 6–8 mm
Ecology
Wet montane (rarely lowland) forest, including bamboo forest, usually in gaps or clearings or along streams; (600–)1250–2500 m
Note
The populations in S Tanzania are very disjunct from the main area of the species but no significant morphological differences can be found. Mass-germination in this species was seen in the Mufindi area in March 2006 (pers. obs.) following flowering in late 2005 (C. Congdon, pers. comm.). There are other reports of the species flowering gregariously, but not of it actually dying back after flowering.
Distribution
Flora districts: U2 U3 K3 K4 K 5 T6 T7 Range: Congo-Kinshasa, Rwanda, Burundi

Native to:

Burundi, Kenya, Mozambique, Rwanda, Tanzania, Uganda, Zaïre

Mimulopsis arborescens C.B.Clarke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Dec 3, 1896 Scott Elliot, G.F. [7666], Uganda K000394144 holotype
Dawkins, H.C. [747], Uganda 13096.000

First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 5: 57 (1899)

Accepted by

  • Fischer, E., Rembold, K., Althof, A. & Obholzer, J. (2010). Annotated checklist of the vascular plants of Kakamega forest, Western province, Kenya Journal of East African Natural History 99: 129-226.
  • Kalema, J. & Beentje, H. (2012). Conservation checklist of the trees of Uganda: 1-235. Kew Publishing, Royal Botanic Gardens, Kew.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.
  • Vollesen, K. (2013). Flora Zambesiaca 8(5): 1-184. Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Fischer, E., Rembold, K., Althof, A. & Obholzer, J. (2010). Annotated checklist of the vascular plants of Kakamega forest, Western province, Kenya Journal of East African Natural History 99: 129-226.
  • Kalema, J. & Beentje, H. (2012). Conservation checklist of the trees of Uganda: 1-235. Kew Publishing, Royal Botanic Gardens, Kew.
  • Vollesen, K. (2013). Flora Zambesiaca 8(5): 1-184. Royal Botanic Gardens, Kew.

Flora of Tropical East Africa

  • F.P.N.A. 2: 277 (1947)
  • F.T.A. 5: 57 (1899)
  • K.T.S.: 17 (1961)
  • K.T.S.L.: 605 (1994)
  • Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 494 (1997).
  • Racc. Bot. Miss. Cons. Kenya: 94 (1935)
  • T.S.K.: 161 (1936)
  • U.K.W.F., ed. 2: 268 (1995)
  • U.K.W.F.: 587 (1974)
  • Wiss. Ergebn. Schwed. Rhodesia-Kongo-Exp. 1: 305 (1916)

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