Coleus thyrsoideus Baker

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Coleus thyrsoideus

Photo: Neil Crouch
Red Wall Cave, Chimanimani N.P.

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Synonyms: Plectranthus thyrsoideus (Baker) B. Mathew
Common names:
Description: Shrubby perennial herb, up to 90 cm tall. Stems petioles and inflorescence sparsely covered with spreading hairs. Leaves opposite, lowermost largest, up to 17 × 10 cm, ovate-cordate, bright green above, paler beneath with veins prominent, pubescent; lamina decurrent into the c. 2 cm long petiole; margin coarsely toothed. Leaves gradually smaller towards the top of the branches. Inflorescences terminal on the branches, up to 25 cm long, shortly branched, each branch with dense 10-15 flowered dichotomous cymes. Calyx small, with spreading stellate hairs; dorsal sepal linear-oblong, twice as long as other sepals. Corolla 2-lipped, bright blue, 1.2-1.5 cm long. Upper lip reflexed, broadly obovate, with 4 short rounded lobes; lower lip distinctly longer, saccate, laterally compressed, pointed at the apex.
Notes: The intense blue flower colour and tall, densely flowered inflorescences make this a well-known and popular garden plant
Derivation of specific name:
Flowering time:
Worldwide distribution: Malawi, Mozambique, Zambia?, Zimbabwe.
Growth form(s): Perennial.
Insects associated with this species:
Spot characters: Display spot characters for this species
Image last updated: Monday 5 September 2011
Literature:

Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 189. as Plectranthus thyrsoideus

Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 44. as Plectranthus thyrsoideus

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 56. as Plectranthus thyrsoideus

Paton, A.J. et al. (2013). Lamiaceae Flora Zambesiaca 8(8) Page 258. as Plectranthus thyrsoideus

Wursten, B., Timberlake, J. & Darbyshire, I. (2017). The Chimanimani Mountains: an updated checklist. Kirkia 19(1) Page 93. as Plectranthus thyrsoideus

Other sources of information about Coleus thyrsoideus:

Our websites:

Flora of Malawi: Coleus thyrsoideus
Flora of Mozambique: Coleus thyrsoideus
Flora of Zambia: Coleus thyrsoideus
Flora of Zimbabwe: Coleus thyrsoideus

External websites:

African Plants: A Photo Guide (Senckenberg): Coleus thyrsoideus
African Plant Database: Coleus thyrsoideus
BHL (Biodiversity Heritage Library): Coleus thyrsoideus
EOL (Encyclopedia of Life): Coleus thyrsoideus
ePIC (electronic Plant Information Center): Coleus thyrsoideus
Flora Zambesiaca web site: Coleus thyrsoideus
GBIF (Global Biodiversity Information Facility): Coleus thyrsoideus
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Coleus thyrsoideus
iNaturalist: Coleus thyrsoideus
IPNI (International Plant Names Index): Coleus thyrsoideus
JSTOR Plant Science: Coleus thyrsoideus
Kew Herbarium catalogue: Coleus thyrsoideus
Mansfeld World Database of Agricultural and Horticultural Crops: Coleus thyrsoideus
Plants of the World Online: Coleus thyrsoideus
Tropicos: Coleus thyrsoideus
Wikipedia: Coleus thyrsoideus


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-22

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2022). Flora of Zimbabwe: Cultivated Plants: Species information: Coleus thyrsoideus.
https://www.zimbabweflora.co.zw/cult/species.php?species_id=150020, retrieved 2 December 2022

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