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This species is accepted, and its native range is China (Yunnan) to Indo-China.
A specimen from Kew's Herbarium

[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
South China, Vietnam & Thailand.
Ecology
Open areas in hill evergreen forest, on limestone rocks in evergreen forest; 700 - 2000 m.
Morphology General Habit
Erect or ascending annual herbs up to 1.5 m tall
Morphology Leaves
Leaves membranous, ovate, 30 - 120 x 20 - 70 mm, apex acute, base cordate or subtruncate, margin crenate, puberulous above, puberulous on nerves otherwise glabrous with or without sessile glands beneath; petioles slender, 10 - 50 mm long, puberulous
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens very short, attached below the base of anterior corolla lip and included in it, anterior pair slightly united at base
Morphology Reproductive morphology Flowers Calyx
Calyx tubular-campanulate, 2 - 3 mm long at anthesis, 6- 7 mm long in fruit; posterior lip ovate, acute at apex, margin entire or shortly ciliate, decurrent on tube, glabrous with prominent veins inside, glabrescent with sessile glands outside; anterior lip with teeth subequal, lanceolate, subequal in length to posterior; tube 10-nerved, glabrescent or pubescent with sessile glands outside, slightly gibbous at anterior base
Morphology Reproductive morphology Flowers Corolla
Corolla bluish-purple, 10 - 20 mm long; posterior lip with lobes rounded at apex, pubescent with sessile glands on back, median lobes larger than lateral lobes; anterior lip ovate-oblong, 5-6 mm long, concave, pubescent with sessile glands outside, villous inside; tube 8 - 15 mm long, abruptly recurved beyond calyx, gradually dilated towards throat, pubescent with sessile glands outside
Morphology Reproductive morphology Flowers Disc
Disc with anterior side obtuse or truncate at apex, exceeding and up to twice as long as ovary
Morphology Reproductive morphology Flowers Gynoecium Style
Style shortly cleft and capitate at apex, subequal to posterior stamens
Morphology Reproductive morphology Fruits
Nutlets black or brown, ovoid, c. 1 mm long, smooth, shining, not producing mucilage when wet.
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, simple, up to 25 cm long; verticils 10 - 50 mm apart, clearly interrupted; cymes 1 - 3 cm long, pedunculate, producing lateral cincinni, few to many-flowered; bracts membranous, sessile, early-caducous, broadly ovate-orbicular, up to 10 x 10 mm, acute, shortly ciliate at margin, pubescent; pedicels 1 - 2 mm long at anthesis, 3 - 4 mm long in fruit, shortly pubescent
Morphology Stem
Stems succulent, branched, round-quadrangular, puberulous
Note
This species is characterised by the very long corolla tube and the short stamens which are attached below the base of the anterior corolla lip. The species can also be easily distinguished from other Plectranthus species by the large ovate-orbicular bracts but these can rarely be seen on herbarium specimens as they are early-caducous. The capitate stigma is unique in the genus, and similar to that of Orthosiphon. There are 2 syntypes at K collected by Henry from Southern China. The more complete specimen, Henry 13498, is chosen as the lectotype.
Phenology
Flowering & fruiting August - December.
Type
China, Yunnan, Puerh, 1350 m, Henry 13498 (K!, lectotype chosen here; isolectotype NY).

Native to:

China South-Central, Thailand, Vietnam

Coleus bracteatus Dunn appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 2001 Henry, A. [13498], Yunnan Plectranthus bracteatus K000674648 lectotype
Henry, A. [12537], Yunnan Plectranthus bracteatus K000674647 Unknown type material

First published in Notes Roy. Bot. Gard. Edinburgh 8: 158 (1913)

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 bracteatus.]
  • 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 bracteatus.]

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