5661.000 Tristemma Juss.

Fernandes, R. & A. (1978) Melastomataceae Flora Zambesiaca 4

Description of the genus

Annual or perennial herbs or shrubs, with sharply 4-angular or -winged stems and branches. Leaves petiolate, opposite. Flowers 5-merous, sessile or subsessile, in terminal heads surrounded by leaves and leafy bracts; inner bracts coriaceous, chaffy or membranous. Receptacle ovoid or ovoid-oblong, glabrous or densely setose on the upper half or with 1–6 rings of bristles. Sepals persistent, reflexed, ciliate at the margin; petals mauve, pink or blue-violet, rarely white. Fruit a capsule 5-valved, with fleshy placentas, usually splitting irregularly. Seeds numerous, cochleate.

Worldwide: 15 species in tropical Africa, Madagascar and Mascarene Islands.

Zambia: 1 taxon.

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

SpeciesFZ divisionsProvincesContent
mauritianum J.F. Gmel. var. mauritianum N,WNw,LpDescription, Image

Other sources of information about Tristemma:

Our websites:

Flora of Malawi: Tristemma
Flora of Mozambique: Tristemma
Flora of Zimbabwe: Tristemma

External websites:

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

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-23

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2023). Flora of Zambia: Genus page: Tristemma.
https://www.zambiaflora.com/speciesdata/genus.php?genus_id=1020, retrieved 26 September 2023

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