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This species is accepted, and its native range is Kenya.
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. Pycnostachys, G Bramleyshaped. Flora of Tropical East Africa. 2009

Type
Type: Kenya, Nandi/North Kavirondo District: Nandi Range, Scott Elliot 6471 (K!, holo. BM, iso.)
Morphology General Habit
Perennial herb, 1.5–3 m tall, becoming woody below
Morphology Stem
Stems erect, branching, quadrangular, or rounded-quadrangular where woodier, grooved, densely pubescent with short eglandular hairs and red sessile glands
Morphology Leaves
Leaves opposite, sessile; blades ± ovate, 1.5–4 × 0.8–2.5 cm, margins quite deeply serrate, the serrations with somewhat hooked apices, apex acute, base rounded, densely pubescent with short eglandular hairs, the hairs more plentiful on margins and venation beneath which is raised and conspicuous
Morphology Reproductive morphology Inflorescences
Inflorescence dense, when in flower forming a conical shape, in fruit (only one fruiting specimen seen) 35 × 18 mm; bracts subtending entire inflorescence narrowly ovate, 6–10 mm long, acute to acuminate, enclosing buds then becoming deflexed in flower, indumentum and margins as leaves, persistent through flowering stage; bracts subtending single flowers forming a small coma at the top of the inflorescence, linear-lanceolate, 4–6 mm long, gradually tapering and curling over at apex, pubescent with short eglandular hairs, inconspicuously ciliate
Morphology Reproductive morphology Flowers Calyx
Calyx with scattered red and yellow sessile glands and eglandular hairs, these longer and more plentiful around the top of the tube and the base of the lobes, tube 0.5–1 mm long, with 0.5 mm long triangular scales present on the inner surface of the tube between calyx lobes; lobes 5, subulate with a membranous wing either side of the midrib that narrows towards the more spinescent apex, 2–3 mm long; fruiting calyx with tube ± 5 mm long, somewhat ventrally gibbous, lobes ± 2 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla blue to purple, 4–6 mm long, pubescent with short eglandular hairs and red sessile glands; tube very narrow and parallel-sided for 1–2 mm, then curving sharply downwards and broadening for 1–2 mm before opening out into two lips; posterior lip nearly as long as anterior, 1.5–2.5 mm long; anterior lip 2–3 mm long, 1–1.5 mm deep
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens connate for ± 0.5 mm, barely exserted
Morphology Reproductive morphology Fruits
Nutlets not seen.
Ecology
Open grassy places and streamsides at forest edges; 2000–2600 m
Conservation
Apparently rare, known only from three collections in the Rift Valley area of Kenya, though G.S. Baker said it was common on the Mau at the beginning of the last century.
Note
Only the few collections cited here have been seen, therefore the description is patchy, and is not likely to cover infraspecific variation, especially  in inflorescence characters. Pycnostachys nepetifolia has an unusual, ± ovate leaf with a deeply serrate margin, these features distinguishing it from P. niamniamensis.
Distribution
Range: Not known elsewhere Flora districts: K3 K4 K ?5, K ?6;

Native to:

Kenya

Coleus nepetifolius (Baker) A.J.Paton appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Dec 1, 1993 Baker, G.S. [368], Kenya Pycnostachys nepetifolia K000467418
Dec 1, 1993 Gardner, H.M. [2607], Kenya Pycnostachys nepetifolia K000467419
Dec 1, 1993 Gosnell, J. [736], Kenya Pycnostachys nepetifolia K000467417
Jan 1, 1914 Scott Elliot, G.F. [6471], Kenya Pycnostachys nepetifolia K000405973 Unknown type material
Gosnell, J. [2], Kenya Pycnostachys nepetifolia K000467416

First published in PhytoKeys 129: 78 (2019)

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. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

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