I think it should be Pontederia hastata <https://sites.google.com/site/efloraofindia/species/m---z/po/pontederiaceae/pontederia/monochoria-hastata> as per details and keys herein.
---------- Forwarded message --------- From: Bimal Sar kar <[email protected]> Date: Sun, 12 Aug 2012 at 18:43 Subject: [efloraofindia:124102] SYMBIOSIS : 224 To: Dear All, Attaching an image of a Bumble Bee on the flower of *Monochoria vaginalis.*This plant is commonly known as Lesser Water Hyacinth. With regards, Bimal -- -- With regards, J.M.Garg 'Creating awareness of Indian Flora & Fauna' <http://en.wikipedia.org/wiki/User:Jmgarg1> Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia <https://sites.google.com/site/efloraofindia/award-for-efloraofindia>. For identification, learning, discussion & documentation of Indian Flora, please visit/ join our Efloraofindia Google e-group <https://groups.google.com/forum/#!forum/indiantreepix> (largest in the world- more than 3,000 members & 3,00,000 messages on 23.8.18) or Efloraofindia website <https://sites.google.com/site/efloraofindia/> (with a species database of more than 13,000 species & 3,00,000 images of which more than 2,50,000 images are directly displayed on 31.1.20). The whole world uses my Image Resource <http://commons.wikimedia.org/wiki/Category:J.M.Garg> of more than a thousand species & eight thousand images of Birds, Butterflies, Plants etc. (arranged alphabetically & place-wise). You can also use them for free as per Creative Commons license attached with each image. Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of India'. -- 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/indiantreepix/CA%2BiuSFDuX41QKMtGHZf1pE0Mqu_LYg9QRmEGpmL9HprWJmDmgA%40mail.gmail.com.
