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!Spirodela polyrhiza (L.) Schleid. Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch 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: Linnaea 13(4): 392. 1839. (Linnaea) 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: RIZWAN Y. HASHMI & SAOOD OMER
Type: Syntypes: Described from Europe (Mich. gen. 16. t. 11. f. 1. 1729; Raj. angl. 3. p. 129. t. 4. f. z. 1724).
Distribution: Distribution: Subcosmopolitan.
Comment/Acknowledgements: R.R. Stewart (l.c.) recorded that it was common in Dal Lake in Kashmir and he saw horses eating it.
Illustration: Spirodela polyrhiza (L.) Schleid. (Illustration)
Map Location: B-6 Peshawar Valley: Akbar Pura, Pang Trieth, Bashir Ahmed Suhail 205 (K); Peshawar Valley: Akbar Pura, Pang Trieth, Race Course, Bashir Ahmed Suhail 227 (K); B-7 Kashmir: Tangmerg, 6000 ft., R.R. Stewart 12221 (RAW); B-8 Kashmir: Sind Valley, Gandarabad, 5200 ft., Ludlow & Sheriff 8114 (BM); C-7 Attock Distt: Hassan Abdal, R.R. Stewart 13873b (RAW); Rawalpindi Distt.: Sohawa pond, Y.J. Nasir & Rubino Akhtar 10680 (RAW); F-5 Sukkur: near Distt. Jail, Rizwan Yusuf & Adnan Yusuf 2 (KUH); A.C.C. Colony, Rohri Cement Works, Rizwan Yusuf & Adnan Yusuf 73 (KUH); Rohri: Saood Omer & Rizwan Yusuf 1964 (KUH); Rohri Cement Works Residential Area, Saood Omer & Rizwan Yusuf 1967 (KUH).

 

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Free floating; fronds orbicular-ovate, 3-10 x 3-8 mm, asymmetrical, obtuse or rounded at apex, entire, 3-15-veined, green above, tinged with pink or purple beneath. Daughter fronds budding from the vicinity of root insertion in a slit in the mother plant. Roots 3-18 per frond. Turions produced in adverse condi¬tions; arising from lateral slits; thick, brownish or dark greenish. Flowering specimens not seen in Pakistan.
 
 
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