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This species is accepted, and its native range is Kenya to N. Tanzania.
A specimen from Kew's Herbarium

[FTEA]

Lamiaceae (Labiatae), A.J. Paton, G. Bramley, O. Ryding, R.M. Polhill, Y.B. Harvey, M. Iwarsson, F. Willis, P.B. Phillipson, K. Balkwill, C.W. Lukhoba, D.F. Otieno, & R.M. Harley. Flora of Tropical East Africa. 2009

Type
Types: Tanzania, Lushoto District: Msinga to Kwa Mshusa, Holst 9119 (B†, syn.; K!, isosyn.) & 9120a (B†, syn.; G, JE, K!, W!, isosyn.)
Morphology General Habit
Climbing or scandent herb to 3 m long, not reported as aromatic
Morphology Stem
Stems scandent, quadrangular, succulent, often leafless in flower, branching with branches often more slender at base, pubescent or densely pubescent, with hairs in various orientations and with pale sessile glands
Morphology Leaves
Leaves spreading, ovate, 1.5–2.5 × 1.5–2.5 cm, crenate or deeply so, apex acute, base cordate to broadly cuneate, pubescent or densely so and with pale sessile glands; petioles 5–15 mm long
Morphology Reproductive morphology Inflorescences
Inflorescence on slender short lateral branches with flowers single, secund, opposite or alternately inserted on axis, often densely clustered towards ends of branches, ± 2 mm apart; axis often more slender at base
Morphology Reproductive morphology Flowers Calyx
Calyx 1–2 mm long, curved, densely pubescent, with pale sessile glands; fruiting calyx 2–3 mm long, tubular, curved with lobes at right-angles to tube with pedicel attached excentrically behind the posterior lip; throat truncate; lobes ± equal, lanceolate, but with the posterior slightly broader and the median slightly longer
Morphology Reproductive morphology Flowers Corolla
Corolla blue or deep violet, 7–9 mm long; tube 4–5 mm long, sigmoid; posterior lip shorter than anterior; anterior lip cucullate, enclosing stamens, 2–4 mm long, sparsely pubescent with pale sessile glands
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal filaments fused at base
Morphology Reproductive morphology Fruits
Nutlets dark brown with darker speckles, broadly ovoid, slightly flattened, 1 mm long, producing copious mucilage when wet.
Ecology
Margin of bare rock faces, edges of forest; 1000–1500 m, in K 4; 1600–2250 m
Conservation
Least concern; (EOO 66905.1 km2, 11 collections from 11 localities; AOO 38574.5 km2 with cell width 62.1 km, number of cells 10, 4 subpopulations based on adjacent cells; 2 subpopulations based on Rapoport distance)
Note
Differs from P. djalonensis in the more robust habit, larger corolla and a more sharply bent fruiting calyx.
Distribution
Range: Not known elsewhere Flora districts: K 1/K4 K4 K6 T2 T3

Native to:

Kenya, Tanzania

Coleus scandens Gürke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Holst, C. [9120a], Tanzania Plectranthus scandens K000431959 Unknown type material
Holst, C. [9119], Tanzania Plectranthus scandens K000431958 Unknown type material

First published in Abh. Königl. Akad. Wiss. Berlin 1894: 51 (1894)

Not accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne. [Cited as Plectranthus scandens.]
  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Plectranthus scandens.]

Literature

Kew Backbone Distributions

  • Paton, A.J., Mwanyambo, M. Govaerts, R.H.A., Smitha, K., Suddee, S., Phillipson, P.B., Wilson, T.C., Forster, P.I. & Culham, A. (2019). Nomenclatural changes in Coleus and Plectranthus (Lamiaceae): A tale of more than two genera PhytoKeys 129: 1-158.

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