5474.000 Ammannia L.

Description of the genus

Annual, glabrous herbs. Stems erect or decumbent, 4-gonous or 4-winged, simple or ± branched. Leaves decussate, sessile, entire, 1-nerved; bracteoles small, membranous, whitish. Flowers 4 (5–8)-merous, never heterostylous. Calyx campanulate or urn-shaped, 8-ribbed; appendages absent or very short. Petals 4–8, very caducous or absent, small, obovate, spathulate or rounded. Stamens as many as or twice the number of calyx-lobes, rarely fewer, with the filaments inserted at 1/4–1/2 of the calyx-tube length; anthers didymous. Ovary incompletely 2–4(5)-locular, sometimes unilocular; stigma capitate; ovules numerous, axile or on the septa. Fruit capsule globose or ellipsoid, included in the calyx or ± exserted, thinly membranous, dehiscing transversally and irregularly; seeds numerous, very small, angular.

Worldwide: Species 20, cosmopolitan.

Zimbabwe: 5 taxa.

Ammannia auriculata

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

SpeciesFZ divisionsContent
auriculata Willd.N,W,C,SDescription, Image
baccifera L. subsp. aegyptiaca (Willd.) KoehneW,C
baccifera L. subsp. baccifera N,W,S
prieuriana Guill. & Perr.N,W,C,E,SImage
wormskioldii Fisch. & C. A. Mey.N,W,S

Other sources of information about Ammannia:

Our websites:

Flora of Botswana: Ammannia
Flora of Caprivi: Ammannia
Flora of Malawi: Ammannia
Flora of Mozambique: Ammannia
Flora of Zambia: Ammannia

External websites:

ePIC (electronic Plant Information Center): Ammannia
Flora Zambesiaca web site: Ammannia
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Ammannia
IPNI (International Plant Names Index): Ammannia
Kew Herbarium catalogue: Ammannia

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-18

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2018). Flora of Zimbabwe: Genus page: Ammannia.
https://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=1003, retrieved 14 November 2018

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