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Published In: Species Plantarum 2: 993. 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 cosmopolitan genus of about 20 species.


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Erect, perennial herbs. Leaves petiolate, polymorphic, aerial leaves lanceolate to elliptic-ovate, with sagittate base, submerged leaves modified into ribbon like phyllodes, acute. Inflorescence an erect raceme of 3-flowered verticils, each verticil subtended by 3 subconnate bracts. Flowers unisexual (plants then monoecious or dioecious) or polygamous, male flowers present towards apex of racemes, female or bisexual flowers towards the base, pedicels erect or suberect, recurved & thickened in fruit. Thalamus globular or oblong. Sepals recurved, patent or appressed persistent in fruit. Petals white, occasionally pink or purple-spotted at the base. Stamens 6-many, staminodes mostly present in female flowers. Carpels numerous, spirally borne on the thalamus; ovaries laterally compressed, uniovulate; styles erect, terminal or lateral, stigma papillate. Achenes many, laterally compressed, thin, winged and beaked.

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1 Leaf lobes and blade obtuse. Stamens 6-15. Achenes elliptic with distinctly blunt toothed dorsal wing
+ Leaf lobes and blade sharply acute. Stamens c. 20. Achenes triangularly obovate with sub-crenate to entire wing Sagittaria trifolia
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