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This species is accepted, and its native range is SW. Uganda to Burundi.

[FTEA]

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

Type
Types: Rwanda, Rugege, Mildbraed 910 (B†, syn.; BR!, isosyn.) & Mt Karisimbi, Mildbraed 1581 (B†, syn.).
Morphology General Habit
Strongly aromatic erect or scrambling shrubby herb to 3(?–5) m tall, sometimes forming large thickets; branches glabrous or laxly tomentose on upper nodes with long curly many-celled hairs to 5 mm long
Morphology Leaves
Leaves with petiole of stem-leaves 4.5–9(–11) cm long; lamina of stem-leaves cordiform or broadly so, 9–20 × 5–18 cm, upwards smaller and narrower, apex acuminate to cuspidate, base cordate with sinus 0.5–2 cm deep, margin of stem-leaves sharply dentate (rarely crenate) with teeth to 0.5(–1) cm deep, subglabrous to pubescent on both sides
Morphology Reproductive morphology Inflorescences
Inflorescence an open panicle when well-developed, but often racemiform when young or racemiform towards apex, often with longer branches from basal nodes, 10–40 cm long; flowers in 3–7-flowered cymes towards base of inflorescence, fewer or solitary upwards; bracts leafy in basal part of inflorescence, gradually more bract-like upwards and upper ones caducous in fruit; lower bracts with indumentum as leaves, upper branches and pedicels pubescent to tomentose with long curly glandular and non-glandular hairs (longest 3–5 mm); pedicels up to 8 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx glandular-pubescent or densely so; dorsal lobe 13–23(–28 in fruit) mm long, ventral and lateral lobes 11–15(–20 in fruit) mm long; lobes lanceolate to narrowly oblanceolate, 1.5–3 (dorsal rarely to 5) mm wide, subacute
Morphology Reproductive morphology Flowers Corolla
Corolla white to pale mauve with brown throat and yellow spot on lower lip, throat with dense band of long hairs on lower and lateral lobes, without hairs on dorsal lobes, 22–29 mm long, cylindric tube 1–3.5 mm long, throat 12–18 mm long; upper and lateral lobes transversely elliptic, 8–10 × 9–12 mm, lower 10–14 × 8–11 mm; papillate area on lower lip crescent-shaped or interrupted along median line
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Free part of filaments 3–6 mm long and free fused part 1–2 mm, glabrous or longer with a few hairs; anthers 4–6 mm long, spur 1.5–2 mm long
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma 1–2 mm long, dorsal lobe absent.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary with dense short glands all over
Morphology Reproductive morphology Fruits
Capsule 22–26 mm long, uniformly glandular hairy all over
Morphology Reproductive morphology Seeds
Seed (immature) ± 6 × 5 mm
Ecology
Wet montane forest; 2100–2600 m (1900–3000 m in Rwanda and Burundi)
Note
Specimens from Uganda and Congo have subglabrous leaves while specimens from Rwanda and Burundi have pubescent leaves and also generally more densely hairy inflorescences. Osmaston records on his 3848: “no flowers seen in the last 3 years”. Lindau’s (l.c.) illustration shows a plants which has only just started flowering thus showing a rather condensed inflorescence.
Distribution
Range: Congo-Kinshasa (Ruwenzori Mts), Rwanda, Burundi Flora districts: U2

Native to:

Burundi, Rwanda, Uganda, Zaïre

Mimulopsis excellens Lindau appears in other Kew resources:

First published in G.W.J.Mildbraed (ed.), Wiss. Erg. Deut. Zentr.-Afr. Exped., Bot. 2: 295 (1911)

Accepted by

  • Troupin, G. (ed.) (1985). Flora du Rwanda 3: 1-729. Musee Royal de l'Afrique Centrale.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.

Literature

Kew Backbone Distributions

  • Troupin, G. (ed.) (1985). Flora du Rwanda 3: 1-729. Musee Royal de l'Afrique Centrale.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.

Flora of Tropical East Africa

  • F.P.N.A. 2: 278 (1947)
  • Fl. Rwanda 3: 474 (1985)
  • Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 494 (1997).
  • Z.A.E.: 295, t. 33 (1911)

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/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