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This species is accepted, and its native range is Cameroon, South Sudan to E. Tropical Africa.


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

Typus: Uganda, Karamoja District: Mt Moroto, Tweedie 2665 (K!, holo.)
Morphology General Habit
Aromatic soft-wooded shrub or subshrub 0.6–2 m tall
Morphology Stem
Stems roundedquadrangular, erect, purplish or brown, slightly succulent with conspicuous leaf scars on the old wood, puberulent to pubescent with short eglandular hairs and reddish sessile glands, becoming more glandular with short glandular hairs on the inflorescence axis
Morphology Leaves
Leaves spreading, succulent, viscid, petiolate; blades broadly elliptic or trullate, 2.5–6 × 2–5 cm, deeply crenate or dentate, weakly revolute, apex rounded, base cuneate, densely pubescent or tomentose, with red and some pale sessile glands beneath; petiole 3–20(–30) mm long
Morphology Reproductive morphology Inflorescences
Inflorescence usually paniculately branched, lax with 8–24-flowered verticils 5–15 mm apart in fruit, sometimes touching in flower, with bracts subtending opposite, 4–12-flowered sessile or short, branched circinnate cymes; bracts ovate, 2–3 mm long, erect above forming an inconspicuous terminal coma, soon deciduous; pedicels 2–3 mm long, slightly flattened
Morphology Reproductive morphology Flowers Calyx
Calyx 1–2 mm long, densely pubescent, with red sessile glands; fruiting calyx 3–4 mm long, tubular, bent with throat at right-angles to tube with mouth pointing upwards with pedicel attached excentrically behind posterior lip; throat truncate; posterior lip narrowly elliptic or lanceolate, straight or slightly curving upwards, shortly decurrent; anterior lobes lanceolate with median lobes slightly longer and narrower than lateral
Morphology Reproductive morphology Flowers Corolla
Corolla white, mauve or blue, 8–10 mm long, pubescent with hairs and red sessile glands on lobes; tube 4–6 mm long, shallowly sigmoid; posterior lip shorter than anterior; anterior lip 4–5 mm long, horizontal, concave, enclosing stamens or stamens just exserted
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal filaments free
Morphology Reproductive morphology Fruits
Nutlets brown, shiny with reddish dots, broadly elliptic in outline, flattened, 1 mm long, producing lots of mucilage speckled on outer surface
Fig 52: 2–4, p 305
Rocky slopes or cliffs; 1350–2700 m
Least concern; widely distributed
Differing from P. hadiensis by shorter pedicels and fruiting calyx with upward rather than spreading or downward-pointing mouth and cuneate, trullate rather than triangular truncate leaf blades. Tweedie 1924 from Suk escarpment has a largely unbranched inflorescence and less intensely red sessile glands.
Range: Cameroon and Sudan (Imatong Mts) Flora districts: U1 U2 U3 K2 K3 K5 K6 T1

Native to:

Cameroon, Kenya, Sudan, Tanzania, Uganda

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

First published in PhytoKeys 129: 104 (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

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.