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This species is accepted, and its native range is Eritrea to Tanzania, Arabian Peninsula Indian Subcontinent to S. Central China.
Coleus barbatus

[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: illustration of cultivated material in Bot. Rep. 9, t. 594 (1809) holo.; Eritrea, Dekemehare, Colville 47 (K!, epitype, C, photo. of epitype)
Morphology General Habit
Aromatic perennial succulent shrub, (0.2–)1–3(–4.5) m tall
Morphology Stem
Stems erect or ascending, sometimes creeping at base, rounded-quadrangular, branching, softly wooded and brittle, pubescent to villose with short or long antrorse or rarely retrorse eglandular hairs and patent glandular or eglandular hairs and with red sessile glands, with indumentum of inflorescence axis abruptly becoming glandular, viscid and less dense and with short or long glandular patent hairs and red and yellowish sessile glands
Morphology Leaves
Leaves spreading, fleshy, petiolate; blades elliptic to ovate, 0.9–20 × 0.5–11 cm, serrate or crenate, obtuse to rounded, base cuneate, broadly cuneate, truncate or subcordate, attenuate at petiole, pubescent to lanate, with red sessile glands; petiole 3–50 mm long
Morphology Reproductive morphology Inflorescences
Inflorescence lax with 10(–14)-flowered verticils 5–25 mm apart in fruit; cymes sessile, 5(–7)-flowered, dichasial at first branch producing two lateral condensed cincinni; bracts ovate, apiculate, 5–20 mm long, erect above forming a conspicuous terminal coma, cucullate, enclosing buds, soon deciduous; pedicels 3–7 mm long, ascending, shortly flattened, distally curved
Morphology Reproductive morphology Flowers Calyx
Calyx 3–5 mm, sparsely pubescent to villose, with red and yellowish sessile glands, often purplish; fruiting calyx 6–10 mm long, shortly tubular and with pedicel attached excentrically behind posterior lip; throat truncate, densely villose; posterior lip elliptic, apiculate at apex, curving upwards, decurrent; anterior lip 4-lobed, lobes lanceolate, median longer than lateral
Morphology Reproductive morphology Flowers Corolla
Corolla blue or purple, (7–)8–26 mm long, with scattered red glands or hairs on lobes; tube 5–12 mm long, sigmoid; posterior lip much shorter than anterior; anterior lip 8–15 mm long, finally horizontal, deeply cucullate enclosing stamens
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal filaments fused
Morphology Reproductive morphology Fruits
Nutlets pale brown to black, smooth, with dark gland dots, broadly ovoid, slightly flattened, 1.5–2 mm long, producing copious speckled mucilage when wet.

Native to:

Burundi, China South-Central, East Himalaya, Eritrea, Ethiopia, India, Kenya, Nepal, Oman, Rwanda, Saudi Arabia, Somalia, Sri Lanka, Sudan, Tanzania, Thailand, Uganda, West Himalaya, Yemen, Zaïre

Introduced into:

Botswana, Cape Provinces, Malawi, St.Helena, Zambia, Zimbabwe

Coleus barbatus (Andrews) Benth. ex G.Don appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Wallich, N. [Cat. no. 2728], Nepal K000639591
s.coll. [Cat. no. 2728], India K001116963
s.coll. [Cat. no. 2728] K001116962
Blinkworth, R. [Cat. no. 2728], India K001116961
May 24, 2013 Bisset [192], Yemen Plectranthus barbatus K000735957
May 24, 2013 Bisset [137], Yemen Plectranthus barbatus K000735958
May 17, 2013 Katende [1927], Uganda Plectranthus barbatus K000938046
May 17, 2013 Tiyoy [1325], Uganda Plectranthus barbatus K000938047
Jan 1, 1998 Schimper [333], Ethiopia Plectranthus barbatus K000431891
Plectranthus barbatus 52769.000
Mathew, B. [6133], Kenya Plectranthus barbatus 6049.218
Mathew, B. [6171], Kenya Plectranthus barbatus 6049.223
Burger, W. [2246], Ethiopia Plectranthus barbatus K000431889
Cole, E. [s.n.], Somalia Plectranthus barbatus K000431893 Unknown type material
Burger, W. [2246], Ethiopia Plectranthus barbatus K000431888
Volkens, G. [427], Tanzania Plectranthus barbatus K000975992 neotype
Russell, W. [s.n.], India Plectranthus barbatus K000820188
Lort Phillips [s.n.], Somalia Plectranthus barbatus K000431892 Unknown type material
Wight [s.n.], India Plectranthus barbatus K000820187
Lort Phillips [s.n.], Somalia Plectranthus barbatus K000431894 Unknown type material
Colville, J.W. [47], Ethiopia Plectranthus barbatus K000431890 epitype

First published in J.C.Loudon, Hort. Brit.: 483 (1830)

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

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew. [Cited as Plectranthus barbatus.]
  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne. [Cited as Plectranthus barbatus.]
  • 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 barbatus.]

Literature

Kew Backbone Distributions

  • Lambdon, P. (2012). Flowering plants & ferns of St Helena: 1-624. Pisces publications for St Helena nature conservation group.
  • Mosti, S., Raffaelli, M. & Tardelli, M. (2012). Contributions to the flora of central-southern Dhofar (Sultanate of Oman) Webbia; Raccolta de Scritti Botanici 67: 65-91.
  • 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.
  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R.M., Harvey, Y.B., Iwarsson, M., Otieno, D., Balkwill, K., Phillipson, P.B., Harley, R.M. & Willis, F. (2013). Flora Zambesiaca 8(8): 1-346. Royal Botanic Gardens, Kew.

Art and Illustrations in Digifolia
Digital Image © Board of Trustees, RBG Kew

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

Kew Science Photographs
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/