Sir, I fully agree with Ritesh Ji's identification. With its elongated nodding inflorescence it is not *P. minor* and unlike the plant in this thread *P. hydropiper* is a stoutish herb.
So, i also think that it is *P. mitis* as have been identified by Ritesh Ji. Thank you, Regards, surajit On Tue, Jan 8, 2013 at 4:03 PM, J.M. Garg <[email protected]> wrote: > Forwarding again for Id confirmation or otherwise please. > > Some earlier relevant feedback: > > Dear Surajit ji, > Not P. minor! > *Probably your plant is Persicaria mitis (Shrank) Holub but can be > confirmed only after the careful examination of the plant/specimen.* Let > me inform you that P. minor, P. mitis and P. hydropiper are very close > species, known to hybridize among each other and often misidentified. Even > the intermediate forms have also been reported (Parnell, 1988). P. minor > are supposed to have an erect spike whether the other two having nodding > ones (a character clearly visible in your photographs). Please also be > noted that the ochrea and nut characters are very important to identify the > Polygonum (s.l.) sps. which I would like to see in your next post. Please > remember that the identity of another Persicaria from Hooghley is still > pending because of the unavailability of mature nuts.* However, the most > important difference between the above-mentioned three species is probably > the number of perianth glands which are ca.12 in P. mitis, Nil (0) in P. > minor and ca.83 in P. hydropiper. *Besides, there are minor variations in > nut character and ochrea tooth lengths. > Hope I am not putting you in more trouble. :-) > Would like to hear from our experts too. > Regards, > Ritesh. > > Ritesh Ji, > I agree fully, it is not *Persicaria minor* (Huds.) Opiz. > I agree that clear pictures of ochrea and, if possible, nuts are very > important to ID *Persicaria*. > But, *"glands in perianth" is surely troublesome to me!* > Thank you very much for the ID. > Regards, > surajit > > > ---------- Forwarded message ---------- > From: surajit koley <[email protected]> > Date: 1 January 2013 00:16 > Subject: [efloraofindia:141916] Persicaria sp. Hooghly 01-Jan-2013 sk1 > To: efloraofindia <[email protected]> > > > Sir, > > Found this *Persicaria* on the edge of a rice-field beside a > ditch-cum-irrigation channel. Could this be *Persicaria minor* (Huds.) > Opiz? > > Species : UNKNOWN > H & H : slender herb, about 2 ft tall > Date : 2/12/12 > Place : Hooghly > > Regards, > > surajit > > > -- > > > > > > > -- > With regards, > J.M.Garg > http://en.wikipedia.org/wiki/User:Jmgarg1 > 'Creating awareness of Indian Flora & Fauna' > The whole world uses my Image Resource of more than a *thousand species*& > eight thousand images of Birds, Butterflies, Plants etc. (arranged > alphabetically & place-wise): > http://commons.wikimedia.org/wiki/Category:J.M.Garg. You can also use > them for free as per Creative Commons license attached with each image. > For identification, learning, discussion & documentation of Indian Flora, > please visit/ join our Efloraofindia Google e-group: > http://groups.google.co.in/group/indiantreepix (more than 2030 members & > 1,42,000 messages on 31/12/12) or Efloraofindia website: > https://sites.google.com/site/efloraofindia/ (with a species database > of more than 7500 species). > Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of > India'. > --
