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


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: Tanzania, Dodoma District: Kilimatinde, Prittwitz 118 (B†, holo. UPS, iso., K!, fragment)
Morphology General Habit
Perennial herb, to 1 m tall, becoming somewhat woody below
Morphology Stem
Stems arising from a woody rootstock, erect, quadrangular or rounded-quadrangular where woodier, with red sessile glands, younger stems and immediately below inflorescence pubescent with glandular hairs, older stems pubescent to ± glabrous
Morphology Leaves
Leaves whorled,usually in 4s, sessile; blades linear to lanceolate, 2.5–5.5 × 0.1–0.3 cm, ± entire but often with a few minute and widely spaced serrations near apex, apex acute, base sessile/rounded on to stem, ± glabrous and with red sessile glands, very few ± parallel veins visible
Morphology Reproductive morphology Inflorescences
Inflorescence solitary dense narrow heads, in fruit 45–55 × 15–25 mm, bracts subtending entire inflorescence linear, ± 10 mm long, acute, pubescent and with scattered short eglandular hairs, not persistent through flowering stage; bracts subtending single flowers linear, ± 4 mm long, acute, pubescent and ciliate with glandular hairs
Morphology Reproductive morphology Flowers Calyx
Calyx with tube ± 1 mm long at anthesis, outer surface with glandular hairs and densely clad with red sessile glands, with 0.5–1 mm long triangular scales present on the inner surface of the tube between calyx lobes, these with glandular hairs, inner surface with short erect eglandular hairs; lobes 5, subulate, ± 4 mm long, with short glandular hairs; fruiting calyx with tube 4–6 mm long, funnel-shaped, lobes ± erect, 5–6 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla bright blue, 11–13 mm long, pubescent with scattered eglandular hairs, with red sessile glands and yellow sessile glands becoming denser towards lips; tube very narrow and parallel-sided for 4–5 mm, then curving sharply downwards and broadening for 3–4 mm before opening into two lips; posterior lip ± 4 mm long; anterior lip ± 5 mm long, ± 2 mm deep
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens connate for ± 2 mm, usually not exserted or exserted only fractionally
Morphology Reproductive morphology Fruits
Nutlets 1.5 mm long.
Swampy grassland on dark sandy loam; 1200–1300 m
Only known from the type and one other collection; data deficient
Differs from other linear-leaved species by its glandular, funnel-shaped rather than ventrally gibbous calyx.
Range: Not known elsewhere Flora districts: T4 T5

Native to:


Coleus graminifolius (Perkins) A.J.Paton appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Milne-Redhead, E. [9366], Tanzania Pycnostachys graminifolia 27428.000
Bidgood, S. [2735], Tanzania Pycnostachys graminifolia K000467427
Bidgood, S. [2735], Tanzania Pycnostachys graminifolia K000467428
Prittwitz [118], Tanzania Pycnostachys graminifolia K000405964 Unknown type material

First published in PhytoKeys 129: 52 (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. Scientific Data 8: 215.


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

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew

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.