7360.000 Platostoma P. Beauv.

GENIOSPORUM Wall. ex Benth.

Adams, C.D. (1972) Flowering Plants of Jamaica. University of West Indies, Mona, Jamaica.

Paton, A.J. et al. (2013) Lamiaceae Flora Zambesiaca 8(8) 1-346

Description of the genus

Annual or perennial herbs, stems arising from a taproot, slender rhizome or woody rootstock. Leaves opposite, petiolate; upper leaves sometimes basally pale or coloured. Inflorescence lax to dense in more than 3-flowered verticils; bracts usually coloured. Calyx bilabiate, rounded in cross section; upper lip with 1 or 3 lobes. Corolla white, pink or bluish to purple; bilabiate with a short tube, dilating at throat, pubescent to densely villose within; posterior lip erect, median lobes slightly smaller. Fruit consisting of nutlets, black, obovoid, with minute longitudinal ridges; sometimes pubescent at apex; not producing mucilage when wet.

Comment: Platostoma rotundifolium (Briq.) A.J. Paton is recorded as occurring in Zimbabwe in Mapaura and Timberlake, 2004, p. 56. This was presumably based on specimens of this species (possibly held under the older name of Geniosporum angolense Briq.) in SRGH. However, Paton in FZ does not record P. rotundifolium for Zimbabwe and furthermore there were no specimens from Zimbabwe found in SRGH on 30 September 2015 which could be P. rotundifolium and we have therefore removed this species as occurring in Zimbabwe.

Worldwide: 45 species in the Old World tropics.

Zimbabwe: 1 taxon.

Platostoma strictum

Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesFZ divisionsContent
strictum (Hiern) A.J. PatonC,E,SDescription, Image

Other sources of information about Platostoma:

Our websites:

Flora of Caprivi: cultivated Platostoma
Flora of Malawi: Platostoma
Flora of Mozambique: Platostoma
Flora of Zambia: Platostoma

External websites:

African Plants: A Photo Guide (Senckenberg): Platostoma
BHL (Biodiversity Heritage Library): Platostoma
EOL (Encyclopedia of Life): Platostoma
GBIF (Global Biodiversity Information Facility): Platostoma
Google: Web - Images - Scholar
iNaturalist: Platostoma
IPNI (International Plant Names Index): Platostoma
JSTOR Plant Science: Platostoma
Mansfeld World Database of Agricultural and Horticultural Crops: Platostoma
Plants of the World Online: Platostoma
Tropicos: Platostoma
Wikipedia: Platostoma

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Genus page: Platostoma.
https://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=1238, retrieved 22 May 2024

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