Plectranthus thyrsoideus (Baker) B. Mathew

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Plectranthus thyrsoideus

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

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Synonyms: Coleus thyrsoideus Baker ex Hook. f.
Common names:
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.
Type location:
Derivation of specific name:
Altitude range:
Flowering time:
Worldwide distribution: Malawi, Mozambique, Zambia?, Zimbabwe.
Zambian distribution (Flora Zambesiaca): N,W,C
Zambian distribution (Provinces): Cb,N,Mc,C
Growth form(s): Perennial.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

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.

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

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.

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

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

Other sources of information about Plectranthus thyrsoideus:

Our websites:

Flora of Malawi: Plectranthus thyrsoideus
Flora of Mozambique: Plectranthus thyrsoideus
Flora of Zimbabwe: Plectranthus thyrsoideus
Flora of Zimbabwe: cultivated Plectranthus thyrsoideus

External websites:

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

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-22

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2022). Flora of Zambia: Species information: Plectranthus thyrsoideus., retrieved 26 June 2022

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