Dear All, Posted *Commelina, *is* I *think *Commelina diffusa *Burm. f. Fl. Ind. 13. t. 7. f. 2. 1768. [=*C. nudiflora *of Moon, Cat. 5. 1824; Hook. f., Fl. Br. India, 6: 369. 1892. non L., 1753]. ID based on field (in vegetative) observations of mine, I may be wrong (seeds 5, not appendaged, testa reticulate are the few key chr. to ID the species).
*Commelina appendiculata *is having spathes of 5 to 10 cm long, 2 to 2.5 cm wide flowers, (seeds 2-3, with appendages, testa smooth) I personally do not find any qualitative differences in *C. sikkimensis *& *C. diffusa*. And *C. undulata *is with fused spathes at margins. And the posted plant is with spathes free on margins. Spathes length, pubescence is vary according the environment, so it could be difficult to judge the species, basis of quantitative characters. Seed and Capsule characters are play important role in species differentiation at least in genus *Commelina. * Thanking you. On Sun, Nov 25, 2012 at 11:58 AM, jmgarg1 <[email protected]> wrote: > Forwarding again for Id assistance please. > > > ---------- Forwarded message ---------- > From: surajit koley <[email protected]> > Date: 17 November 2012 18:15 > Subject: [efloraofindia:138486] commelina in canal from Hooghly 17/11/12 sk > To: efloraofindia <[email protected]> > > > Good evening > > Of the 20 species of *Commelina* described in The F. B. I., vol6., > p369-374; only three species - *C. sikkimensis* Clarke, *C. salicifolia* > Roxb.; > *C. appendiculata* Clarke have spathes more than One and a Half inch. > > The fourth one *C. undulata* Br. doesn't have any spathe size mentioned > in the book, but do have leaves between 4-5 in. And it has been mentioned > as a *slight* variety of *C. obliqua*. > > I do not have stats on leaf size of this species (it was not possible to > measure it), but comparing the spathe size with that of leaves, i think my > species has leaves of bigger than 15 cm x 1 cm. > > We can leave *C. sikimensis* (leaves 2-3 in x 1/4-1/3 in). > > Which of the above three is my species? Or should i go for an exotic one? > > Species : UNKNOWN > H & H : wild herb in a canal, prostrate, partly erect, growing along with > water hyacinth on water surface. > Date : 15/11/12, 10.30 a.m. > Place : Hooghly > > Thank you & 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 2000 members & > 1,37,000 messages on 31/10/12) 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'. > > -- Mayur Nandikar Research Student, Department of Botany, Shivaji University, Kolhapur (MS) India- 416 004 +91 8007987970 http://commelinaceae.blogspot.com http://murdannia.blogspot.com http://www.flickr.com/photos/commelinaceae --
