While doing ecology practicals nearly 48 years back in Kashmir, and luckily I still remember, we had a few clear cut species of Potamogeton: P. pectinatus with finely dissected leaves, P. lucens with semitransparent leaves, P. natans with thick flat shining floating leaves and P. crispus with wavy (crisped) leaves. We did not know about Aponogeton as it is a basically an ornamental plant of warmer climates, mostly used in aquarium. Yet it has two similar species (which differ besides technical characters, by the absence of above mud stems clearly seen in Potamogeton). with similar names Aponogeton natans (with broad flat leaves) and A. crispus Thunb (syn: A. echinatus Roxb.). To me both Potamogeton crispus and Aponogeton crispus are out of contension. Whereas presence or absence of above mud stems is important for diagnosis, but the colour of inflorescence easily places it as Aponogeton natans. I hope I am not wrong.
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: 9810359089 http://www.gurcharanfamily.com/ http://people.du.ac.in/~singhg45/ On Thu, May 21, 2015 at 1:21 PM, surajitkoley <surajitnotavaila...@gmail.com > wrote: > Perhaps Roxburgh would know (his) species better than any other sources. > Attached here entries from FBI, FI, BP, BoBO. > Two kew heb - > > 1. http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000950197 > 2. http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000950202 > > Thank you > > Regards > > On Saturday, 2 May 2015 16:21:52 UTC+5:30, Anurag Sharma wrote: >> >> Family: Aponogetonaceae >> Date: 29th April 2015 >> Place: Tumkur-Hassan district, Karnataka >> Habit: Herb >> Habitat: Aquatic/Pond >> > -- > You received this message because you are subscribed to the Google Groups > "efloraofindia" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to indiantreepix+unsubscr...@googlegroups.com. > To post to this group, send email to indiantreepix@googlegroups.com. > Visit this group at http://groups.google.com/group/indiantreepix. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to indiantreepix+unsubscr...@googlegroups.com. To post to this group, send an email to indiantreepix@googlegroups.com. Visit this group at http://groups.google.com/group/indiantreepix. For more options, visit https://groups.google.com/d/optout.
