Plectranthus thyrsoideus (Baker) B. Mathew

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Plectranthus thyrsoideus

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

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Synonyms: Coleus thyrsoideus Baker ex Hook. f.
Common names:
Frequency: Locally frequent
Status:
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:
Habitat: Montane areas, often sheltered under rocks.
Altitude range: (metres)
Flowering time:
Worldwide distribution: Malawi, Mozambique, Zambia?, Zimbabwe.
Zimbabwe distribution: E
Growth form(s): Perennial.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Images 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.

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


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Other sources of information about Plectranthus thyrsoideus:

Our websites:

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

External websites:

African Plants: A Photo Guide (Senckenberg): Plectranthus thyrsoideus
African Plant Database: Plectranthus thyrsoideus
Biodiversity Explorer (Biodiversity of southern Africa): 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
IPNI (International Plant Names Index): Plectranthus thyrsoideus
Ispot Southern Africa: Plectranthus thyrsoideus
JSTOR Plant Science: Plectranthus thyrsoideus
Kew Herbarium catalogue: Plectranthus thyrsoideus
Mansfeld World Database of Agricultural and Horticultural Crops: Plectranthus thyrsoideus
The Plant List (version 1.1): Plectranthus thyrsoideus
Tropicos: Plectranthus thyrsoideus


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-17

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2017). Flora of Zimbabwe: Species information: Plectranthus thyrsoideus.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=150020, retrieved 20 September 2017

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