Perennial, aquatic, scapose, dioecious herbs; rhizome bulbous, covered with short thin roots
Leaves submerged or erect; petioles up to 0.4 m long; blades linear to lanceolate, base decurrent to rounded
Inflorescence a 3-merous compound umbel, sometimes reduced and few-flowered, overtopping leaves, with 3 basal acuminate bracts which at first envelop umbel in bud; bracts scarious, semipersistent, upper bracts reduced or 0
Flowers 3 in a whorl, evenly spaced, pedicelled
Male flowers with 3 concave sepals; petals 3, smaller than sepals; stamens 9; sterile carpels ± 12
Female flowers with 3 concave sepals; petals 0 or minute; staminodes 0-12; carpels many, closely arranged on a small receptacle, compressed; stigma ventral, discoid, papillose, subsessile; ovule basal
Achenes obovate-orbicular, laterally compressed, with 2 narrow, circular wings
Nomenclature:
Burnatia Micheli
Micheli: 81 (1881)
Obermeyer: 99 (1966)
Cook: 27 (1990)
Distribution & Notes:
Global: Species 1: Burnatia enneandra Micheli, tropical and southern Africa
MICHELI, M. 1881. Alismaceae. In A.L.P.P. de Candolle, Monographiae phanerogamarum 3. Masson, Paris
OBERMEYER, A.A. 1966. Alismataceae. Flora of southern Africa 1
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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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