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This species is accepted, and its native range is Tanzania (Uluguru Mountains).


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

Type: Tanzania, Morogoro District: Uluguru Mts, Bukubuku, Stuhlmann 8781 (B†, holo.)
Morphology General Habit
Straggly shrubby herb to 2 m tall with sticky inflorescences; stems towards apex sparsely and finely puberulous in two bands
Morphology Leaves
Leaves with petiole of stem-leaves 1.5–3 cm long; lamina of stem-leaves narrowly ovate to ovate, largest ± 9 × 3.5 cm, apex acuminate, base unequal-sided, cordate with a sinus to 3 mm deep, margin shallowly crenate-dentate, with finely puberulous midrib above and with domatia in axils of main lateral veins beneath, otherwise glabrous
Morphology Reproductive morphology Inflorescences
Inflorescence a 10–30 cm long open much-branched panicle with long spreading branches and flowers in lax dichasial cymes with 3–7 flowers or solitary towards apex; bracts leafy, persistent, green, upwards gradually smaller and narrower; branches and pedicels at base of inflorescence with indumentum as branches, upwards gradually more densely puberulous and with scattered to dense long capitate glands; pedicels to 4 mm long, sharply bent where attached to branch
Morphology Reproductive morphology Flowers Calyx
Calyx puberulous and with long broad glossy many-celled capitate glands (apical 2–3 mm of lobes without glands); lobes linear-lanceolate, 0.5–1 mm wide, ventral and lateral 10–12(–16 in fruit) mm long, dorsal 13–15(–20 in fruit) mm long, 2–3(–5 in fruit) mm longer than the others
Morphology Reproductive morphology Flowers Corolla
Corolla resupinate, bright red (or when young whitish outside with reddish throat), ± 40 mm long, glabrous on the outside, cylindric tube ± 2 mm long, throat ± 28 mm long and ± 12 mm across at mouth in dried state, slightly curved along dorsal edge (ventrally in open flower); dorsal and lateral lobes broadly ovate, ± 10 × 8 mm, ventral lobe ± 13 × 10 mm, erect
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Free part of filaments 3–4 mm long and free fused part ± 4 mm, glabrous; anthers 3.5–4.5 mm long, spur on outer theca of longer anthers ± 1.5 mm long
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma ± 2 mm long.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary hairy in apical half
Morphology Reproductive morphology Fruits
Capsule ± 21 mm long, sparsely hairy towards apex
Morphology Reproductive morphology Seeds
Seed (immature) ± 4 × 3 mm.
Ground-floor in primary Allanblackia forest; 1600 m
Known from the the type (now destroyed) and these two collections made within two months of each other. Mabberley notes: “very common and dominant over large areas of the forest floor”. Although it can not be proved on such a slender basis, this species almost certainly has periodic mass-flowering. Despite the absence of original material, the extensive original description expanded by Mildbraed (l.c.) leaves little doubt as to the identity of this species.
Flora districts: T6 Range: Not known elsewhere

Native to:


Mimulopsis volleseniana E.A.Tripp & T.F.Daniel appears in other Kew resources:

First published in Int. J. Pl. Sci. 174: 128 (2013)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8: 215.


Kew Backbone Distributions

  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.

Flora of Tropical East Africa
Flora of Tropical East Africa

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.