Oct 15, 2011, 12:04:04 AM10/15/11
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to Balkar Singh, Dr Pankaj Kumar, Tabish, efloraofindia
Yes Balkar ji
It was a tough competition but your photograph number 7, 10 and 13 seem to be clinching the issue. Otherwise leaf size and shape in two is similar, most flowers of Sagittaria are bisexual (clinch the issue) although some male flowers in later flowers were creating doubt , with both having up to 10 stamens, and male flowers of Hydrocharis also in groups of 2-3 like S. guayanensis. Flowers, however, are larger in Hydrocharis, 4 cm across as compared to 2 cm in S. guayanensis. You may have checked on this.
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297 Mob: 9810359089http://people.du.ac.in/~singhg45/