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Published In: Species Plantarum 1: 126. 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)
Flower/Fruit: Fl. Per.: November-March.
Type: Type: Habitat in Europae lacubus fluviisque argillosis (Sweden), Herb. Linn. no. 175/3 (LINN).
Distribution: Distribution: Europe, Asia, Africa, N. America and Australia.
Comment/Acknowledgements: Fruitlet polymorphism has been noticed in this species (Aalto, l.c.). Plants are generally used in manuring and the rootstocks are used as food for animals.
Photo: Potamogeton perfoliatus L. (Photo)
Map Location: B-7 Swat: Mingora Rechinger f. 30672 (W); B-9 Baltistan: Skardu, E. Nasir & G.L. Webster 5750 and 6291 (RAW); C-7 Rawalpindi Dist.: c. 1700 ft., R.R. Stewart 13847 (RAW); C-8 Kashmir: Rawalkot, A. Rashid Khan s.n. 23.4.53 (RAW); D-4 Quetta: Rannikut, M. G. Konieczny s.n. 7.5.67 (KUH); D-5 Loralai, Pathankot near Loralai, Mohinder Nath 6111 (RAW); G-4 Karachi : Guju Canal, Miss Khush Gul s.n. 4.2.68 (KUH); Khadeji Falls, S.I. Ali s.n. 30.1.68 (KUH); Hub river, common, 17.1.65, S.M.H. Jafri 3993 (KUH).

 

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Rhizomatous aquatic. Stem branched or simple. Leaves submerged, sessile, lanceolate to orbicular, cordate-amplexicaul, size and shape variable 2-6 cm long, 1.5-2 (-2.5) cm broad, entire or minutely denticulate, rounded to obtuse at the apex, usually alternate below, opposite above, 2-7 (-13)-veined, thin, translucent. Stipules free, small, length variable, less than 1 cm long, soon evanescent. Spike 4-5 cm long, densely flowered. Fruitlets 2-3.5 mm long, 1.5-2 (-3) mm broad, beaked, ventral area convex, irregular or straight, beak more or less keeled.
 
 
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