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This species is accepted, and its native range is Tropical Asia.
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
Corolla 8–10 mm long, sigmoid part of tube not concealed; anterior lip 5–6 mm long. Fruiting calyx 4 mm Lateral cincinni of cymes to 10 mm long, pedicels 2 mm long Type: Mauritius [Ile de France], Commerson s.n (P!, holo.; FI!, iso.)Very similar to P dupuisii, but root system is more fibrous and it produces annually replaced tubers
Ecology
Cultivated or in old cultivation; 900–1800 m
Conservation
Widespread; Least concern
Distribution
Range: W Zambia and E Zimbabwe, Mauritius, India, SE Asia Flora districts: K3 K5

[KBu]

Suddee, S., A. J. Paton, & Parnell, J. (2004). A Taxonomic Revision of Tribe Ocimeae Dumort. (Lamiaceae) in Continental South East Asia II. Plectranthinae. Kew Bulletin, 59(3), 379-414. doi:10.2307/4110950

Distribution
Tropical Africa, India, Sri Lanka, Thailand, Vietnam, Philippines, Malaysia & Indonesia, widely cultivated in the tropics.
Ecology
Cultivated.
Morphology General Habit
Erect or ascending perennial herbs up to 30 cm tall, with tuberous roots
Morphology Leaves
Leaves fleshy, ovate or orbicular, 30 - 60 x 20 - 40 mm, apex acute, base cuneate or attenuate and decurrent on petiole, margin crenate, glabrous to puberulous on both sides, with sessile glands beneath, veins conspicuous beneath; petioles 5 - 40 mm, pubescent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens subequal, united at base, included in anterior corolla lip
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate, 2 - 3 mm long at anthesis, 3.5 - 5 mm long in fruit, usually purple when dry; posterior lip ovate or ovate-oblong, twice as long as lateral lobe of anterior lip, acute at apex, slightly puberulous inside, pubescent, with sessile glands outside, margin sometimes ciliate, only slightly decurrent on tube; anterior lip with median teeth united more than half of their length, shortly bifid with acute teeth at apex, subequal to posterior lip, lateral teeth obovate- oblong, short, rounded or subtruncate at apex; tube 10-nerved, pubescent, with sessile glands outside, not gibbous at anterior base
Morphology Reproductive morphology Flowers Corolla
Corolla whitish-purple, 7- 10 mm long; posterior lip pubescent with sessile glands at back, 2 median lobes broadly ovate, rounded at apex, larger than the acute-obtuse triangular-ovate lateral lobes; anterior lip ovate-oblong, 3- 5 mm long, concave, glabrous inside, pubescent with sessile glands outside; tube 4 - 5 mm long, sigmoid at the middle, slightly dilated at base, widely expanded at throat, pubescent with sessile glands outside
Morphology Reproductive morphology Flowers Disc
Disc with anterior side thick, obtuse or truncate at apex, twice as long as ovary
Morphology Reproductive morphology Flowers Gynoecium Style
Style bifid with subequal flabellate branches, exceeding stamens but not exceeding anterior corolla lip
Morphology Reproductive morphology Fruits
Nutlets brown, ovoid or globose, 1 mm long, smooth, not producing mucilage when wet.
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, simple, up to 20 cm long; axis pubescent, with sessile glands; verticils 5 - 12 mm apart, clearly interrupted; cymes ± sessile, lacking obvious lateral cincinni, lax or dense, 2 - 10-flowered, often glomerulate in appearance; bracts sessile, caducous, ovate, up to 5 mm long, acute, ciliate at margin, pubescent; pedicels 1 - 2 mm long in flower, 2 - 4 mm long in fruit, pubescent
Morphology Stem
Stems annual, sometimes rooting at nodes, succulent, branched, round-quadrangular, pubescent
Note
There is no fruiting specimen available from the Asian specimens at K. In order to produce a complete description, the fruiting calyx is here described from Simpson s.n. (TCD), collected from Nyabarsingo, Rwanda, the only fruiting specimen of this species that has been seen.
Phenology
Flowering & fruiting October - December.
Type
Mauritius, Commerson s.n. [holotype P! (in Herb. Desfont.); isotype FI (photo K!)].
Vernacular
Thai: Man Nuu (Nakhon Si Thammarat); Man Khee Nuu (Songkhla).

[FWTA]

Labiatae, J. K. Morton. Flora of West Tropical Africa 2. 1963

Morphology General Habit
An erect nearly glabrous half-succulent herb
Morphology Stem
Square stems, branched at base
Morphology Roots
Tuberous roots
Morphology Reproductive morphology Flowers
Tiny blue flowers 4-5 mm. long
Note
Cultivated in the drier savanna areas.

[KBu]
Use
The species is cultivated in peninsula Thailand for its edible tubers.

Native to:

India, Jawa, Malaya, Maluku, Philippines, Sri Lanka, Sumatera, Thailand, Vietnam

Introduced into:

Benin, Burkina, Central African Repu, Congo, Gabon, Ghana, Guinea, Gulf of Guinea Is., Ivory Coast, Kenya, KwaZulu-Natal, Madagascar, Mauritius, Nigeria, Northern Provinces, Senegal, Togo, Zambia, Zimbabwe

Coleus rotundifolius (Poir.) A.Chev. & Perrot appears in other Kew resources:

Date Reference Identified As Barcode Type Status
s.coll. [Cat. no. 2760], India Coleus rugosus K001117037
Jan 2, 2013 Kiew [FRI 65542] Plectranthus rotundifolius K000735162
Aug 1, 1995 Madagascar Plectranthus rotundifolius K000430821 Unknown type material
Madulid, D.A. [7254], Philippines Plectranthus rotundifolius K000897791
Jan 1, 2000 Wight, R. [2512], India Coleus parviflorus K000674660 isotype
Wight, R. [2572], India Coleus parviflorus K000674661 holotype
Gardner, G. [1204], Sri Lanka Coleus parviflorus K000674659

First published in Vég. Ut. Afr. Trop. Franç. 1: 101 (1905)

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 rotundifolius.]
  • 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 rotundifolius.]
  • 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 rotundifolius.]

Literature

Kew Backbone Distributions

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(1): 1-85. ORSTOM, Bangui.
  • Bramley, G.L.C. (2019). Flora Malesiana 23: 1-444. Noordhoff-Kolff N.V., Djakarta.
  • Brunel, J.F., Hiepo, P. & Scholz, H. (eds.) (1984). Flore Analytique du Togo Phanérogames: 1-751. GTZ, Eschborn.
  • Morales, R. (2011). Les Labiadas (Lamiaceae) de Guinea Ecuatorial Anales del Jardin Botanico de Madrid 68: 199-223.
  • 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.
  • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
  • Suddee, S., Paton, A.J. & Parnell, J.A.N. (2004). A taxonomic revision of tribe Ocimeae Dumort. (Lamiaceae) in Continental South East Asia. II. Plectranthinae Kew Bulletin 59: 379-414.
  • Thiombiano, A., Schmidt, M., Dressler, S., Ouédraogo, A., Hahn, K. & Zizka, G. (2012). Catalogue des plantes vasculaires du Burkina Faso Boissiera 65: 1-391.

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of West Tropical Africa
Flora of West Tropical 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 Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/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