Plectranthus laxiflorus Benth.

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Plectranthus laxiflorus

Picture: Bart Wursten
Forest below Lion Rock, Vumba.

Plectranthus laxiflorus

Picture: Bart Wursten
Forest below Lion Rock, Vumba.

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Synonyms: Germanea laxiflora (Benth.) Hiern
Plectranthus albus Gürke
Plectranthus kondowensis Baker
Plectranthus lilacinus Gürke
Plectranthus violaceus Gürke
Common names:
Status: Native
Tall, strongly aromatic, perennial herb with scrambling stems up to 4 m long. Leaves opposite, triangular-cordate, 3-12 cm long, pubescent to hairy beneath and with red sessile glands; margin crenate or toothed, often slightly rolled under and purplish; petiole 1-12 cm long. Inflorescence terminal with few branches, fairly lax with 6-10-flowered clusters up to 2 cm apart. Calyx 2-3mm long with red sessile glands. Corolla usually white or pale mauve with darker markings, rarely blue.
Type location:
South Africa
Notes: This species has a very strong lemon scent, readily obtained by crushing the leaves.
Derivation of specific name: laxiflorus: with lax or open inflorescences
Habitat: Forest margins and clearings.
Altitude range: 900 - 2000 m
Flowering time:
Worldwide distribution: Eastern DRC, Uganda, Ethiopia, Kenya, Tanzania, Malawi, Mozambique, Zambia, Zimbabwe and South Africa.
Zambian distribution (Flora Zambesiaca): S
Zambian distribution (Provinces): S
Growth form(s):
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 188.

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

Goodier, R. & Phipps, J.B. (1961). A revised checklist of the vascular plants of the Chimanimani Mountains Kirkia 1 Page 62.

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. (2009). Lamiaceae Flora of Tropical East Africa Pages 250 - 251.

Paton, A.J. et al. (2013). Lamiaceae Flora Zambesiaca 8(8) Pages 210 - 211.

Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 70.

Pooley, E. (1998). A Field Guide to the Wild Flowers of KwaZulu-Natal and the Eastern Region. Natal Flora Publications Trust. Durban. Pages 186 - 187. (Includes a picture).

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

Other sources of information about Plectranthus laxiflorus:

Our websites:

Flora of Malawi: Plectranthus laxiflorus
Flora of Mozambique: Plectranthus laxiflorus
Flora of Zimbabwe: Plectranthus laxiflorus

External websites:

African Plants: A Photo Guide (Senckenberg): Plectranthus laxiflorus
African Plant Database: Plectranthus laxiflorus
BHL (Biodiversity Heritage Library): Plectranthus laxiflorus
EOL (Encyclopedia of Life): Plectranthus laxiflorus
ePIC (electronic Plant Information Center): Plectranthus laxiflorus
Flora Zambesiaca web site: Plectranthus laxiflorus
GBIF (Global Biodiversity Information Facility): Plectranthus laxiflorus
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Plectranthus laxiflorus
iNaturalist: Plectranthus laxiflorus
IPNI (International Plant Names Index): Plectranthus laxiflorus
JSTOR Plant Science: Plectranthus laxiflorus
Kew Herbarium catalogue: Plectranthus laxiflorus
Mansfeld World Database of Agricultural and Horticultural Crops: Plectranthus laxiflorus
Plants of the World Online: Plectranthus laxiflorus
The Plant List (version 1.1): Plectranthus laxiflorus
Tropicos: Plectranthus laxiflorus
Wikipedia: Plectranthus laxiflorus

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-20

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2020). Flora of Zambia: Species information: Plectranthus laxiflorus., retrieved 13 July 2020

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