Home Flora of Pakistan
Name Search
District Map
Grid Map
Inventory Project
!Vallisneria L. Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical GardenAfrican Plants, Senckenberg Photo GallerySearch in Flora do Brasil 2020Search in Reflora - Virtual HerbariumSearch in Living Collections Decrease font Increase font Restore font

Published In: Species Plantarum 2: 1015. 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)
Contributor Text: ABDUL GHAFOOR
General/Distribution: A genus with 2-3 species, distributed in tropics, subtropics and warm temperate regions in the Old as well as in the New World. Represented in Pakistan by the following species.


Export To PDF Export To Word
Submerged, dioecious, stoloniferous, glabrous, short-stemmed, perennial herbs with fibrous roots. Leaves radical, sessile, linear, ribbon-shaped, parallel-sided, entire or faintly dentate, obtuse. Flowers unisexual, female solitary, males numerous. Male spathe ovoid, 3-fid at the tip, shortly pedunculate. Male flowers pedicellate, minute, breaking off and floating on the water surface; sepals 3, ovate or oblong-ovate, petaloid; petals 3, minute or absent; stamens 1-3, anthers didymous; pistillode absent. Female spathe tubular, bifid on long slender peduncle that spirally coils after fertilization. Female flower: sepals and petals as in the male; ovary inferior, sessile, linear, unilocular with 3 parietal placentae; styles 3, each 2-lobed with hairs on the innerside; staminodes 3, each bifid. Furit linear, cylindric, 5-10 cm long, included within the spathe. Seeds oblong to fusiform, with membranous testa.
© 2022 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110