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This species is accepted, and its native range is SW. Tanzania to N. Malawi.
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
Type: Tanzania, Rungwe, R.M. Davies R4 (K!, holo. SRGH!, iso.)
Morphology General Habit
Aromatic perennial woody herb 0.7–1.5 m tall
Morphology Stem
Stems straggling, quadrangular, woody, branching with short lateral branches, shortly pubescent with short, ± patent eglandular hairs and yellow and reddish or only reddish sessile glands; inflorescence axis with longer and more glandular hairs
Morphology Leaves
Leaves spreading, petiolate with young branches or clusters of leaves in axils; blades narrowly ovate to oblong, more rarely ovate, (1–)2–6 × 0.6–2 cm, crenate or serrate, apex acute, base attenuate, almost glabrous but with short hairs on veins and with numerous reddish sessile glands; petioles 4–12 mm long
Morphology Reproductive morphology Inflorescences
Inflorescence lax with 6–10-flowered opposite cymes (5–)10–15 mm apart; cymes lax, pedunculate with the first branch dichasial producing 2 lateral cincinni, 20–30 mm long in fruit; peduncle 5–8 mm long; bracts 1 mm long or less; pedicels 3–4(–10) mm long
Morphology Reproductive morphology Flowers Calyx
Calyx 2–3 mm long, pubescent with glandular hairs and red sessile glands; fruiting calyx 5–6 mm long, tubular, saccate at base, straight and with pedicel attached excentrically behind posterior lip; throat truncate; posterior lip oblong, obtuse at apex, horizontal, shortly decurrent; lobes of anterior lip ± equal, lanceolate, apex acute
Morphology Reproductive morphology Flowers Corolla
Corolla bluish white, 9–11 mm long, sparsely pubescent on margins and with red sessile glands; tube 3–4 mm long, sigmoid to shallowly so, saccate at bend, annulate within at base of saccate portion; posterior lip shorter than anterior; anterior lip (4–)6–7 mm long, horizontal, cucullate
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal filaments fused
Morphology Reproductive morphology Fruits
Nutlets brown with reddish dots, ovoid, slightly flat, 1.5 mm long, no mucilage produced.
Ecology
Evergreen forest, Protea-Erica thicket, montane grassland; 1950–2650 m
Conservation
Least concern; (EOO 35463.6 km2, 21 collections from 15 localities; AOO 9893.9 km2 with cell width 44.8 km, number of cells 5, 3 subpopulations based on adjacent cells; 3 subpopulations based on Rapoport distance; described as common ( Luke et al. 8560); probably not threatened)
Distribution
Range: N Malawi Flora districts: T7

Native to:

Malawi, Tanzania

Coleus daviesii E.A.Bruce appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Davies, R.M. [4], Tanzania Plectranthus daviesii K000431975 holotype

First published in Bull. Misc. Inform. Kew 1933: 477 (1933)

Accepted by

  • 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.

Not accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne. [Cited as Plectranthus daviesii.]
  • 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 daviesii.]
  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R., Harvey, Y., Iwarsson, M., Willis, F., Phillipson, P., Balkwill, K., Lukhoba, C., Otiend, D & Harley (2009). Lamiaceae (Labiatae) Flora of Tropical East Africa: 1-430. [Cited as Plectranthus daviesii.]

Literature

Kew Backbone Distributions

  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R., Harvey, Y., Iwarsson, M., Willis, F., Phillipson, P., Balkwill, K., Lukhoba, C., Otiend, D & Harley (2009). Lamiaceae (Labiatae) Flora of Tropical East Africa: 1-430.

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