Inflorescence pedunculate or sessile, lax or condensed dichasial cymes of (1)3-many flowers; bracts 2 below each flower, small, subulate
Flowers 4- or 5-merous, never heterostylous
Calyx: tube broadly to narrowly campanulate, becoming globose in fruit, usually 4-lobed; lobes alternating with conical appendages or appendages 0, very short to nearly as long as lobes
Petals 1-4 or 0, caducuous
Stamens (2-)4(-8), arising from calyx tube, included or exserted, subequal
Ovary incompletely (1)2-5-locular, upper portion of septa incomplete; style 0-1.5 mm long
Capsule globose or ellipsoid, dehiscing irregularly
Seeds many and small, concave-convex, often with a float of thin-walled cells on concave side and margin which evaginates when moistened
x = 10, 13 (9, 11, 12, 17) (polyploidy)
Nomenclature:
Ammannia L.
Linnaeus: 119 (1753)
Immelman: 35 (1991)
Distribution & Notes:
Global: Species ± 25, widespread in tropical, subtropical and temperate regions, 16 species recorded from Africa
Southern Africa: Species 4
References:
IMMELMAN, K.L. 1991. Synopsis of the genera Nesaea and Ammannia (Lythraceae) in southern Africa. Bothalia 21
LINNAEUS, C. 1753. Species plantarum. Laurentius Salvius, Stockholm
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Welcome to Biodiversity Advisor 2.0!
Biodiversity Advisor, developed by the South African National Biodiversity Institute (SANBI) and its Data Partners, is a system that will provide integrated biodiversity information to a wide range of users who will have access to geospatial data, plant and animal species distribution data, ecosystem-level data, literature, images and metadata.
The integrated information comes from our much-loved Botanical Database of Southern Africa (BODATSA) also known as Plants of Southern Africa (POSA), Zoological Database of Southern Africa (ZODATSA), Biodiversity Geographic Information System (BGIS), SANBI's institutional repository (Opus) and others.
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