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Published In: Species Plantarum 1: 251. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: A genus of about 15 species; cosmopolitan except S. America and Australia.

 

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Aquatic or marsh plants. Roots fibrous, rarely tuberous. Leaves pinnate; leaflets linear to oval or ovate. Peduncles terminal or axillary. Calyx teeth evident or obsolete. Petals white. Involucre of entire or incised bracts. Involucel of linear bractlets. Fruit ovoid to oblong; ridges prominent, thickened, corky; furrows 1-3-vittate. Inner seed face plane.
 
 
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