---------- Forwarded message ---------- From: ankush prakash <ank.p...@gmail.com> Date: 25 May 2013 22:09 Subject: Re: [efloraofindia:155757] id of a fern To: "J.M. Garg" <jmga...@gmail.com>
sir i will try to forward new photographs showing all the features... On Fri, May 24, 2013 at 11:37 AM, J.M. Garg <jmga...@gmail.com> wrote: > A reply: > "My guess is that it may well be Thelypteris erubescens. However > identifying a fern from these particular photos as made available is full > of problems as they do not adequately show what is needed to see. > 1. The base of the lamina usually shows the most lobed or most developed > part, not the apex or top part - so rather than four photos all showing the > same features, we needed a photo to show the lamina-base. In this case, if > it is T. erubescens, the lowest pinnae should be the longest and the lowest > pair should be somewhat backward- or downward-deflexed. But we were not > shown this crucial information - so can't be sure the frond was not > narrowed to its base as in many other species of Thelypteris. > 2. The photos are not quite in focus and can't be magnified to see > details of the sori - and anyway the sori look over-mature, so one can't > see indusia. I guess there would have been a central double-row of rounded > indusiate sori running up each pinnule (or pinna-lobe), but this is not > shown. > 3. Especially in Thelypteris, the venation is important to show - > whether the veins are free (as they should be if it is T. erubescens), or > whether opposite pairs anastomose beneath the sinus between pinnules. This > cannot be seen so we needed one close-up photo showing the veins between a > pair of pinnules. > 4. We do need some sort of rough locality and ecology! T. erubescens is > common in the Indo-Himalaya from Pakistan eastwards. One record also exists > from South India, but the population needs confirming as the specimen also > looks like T. tylodes and might be that instead. If this collection is from > Karnataka, for example, it won't be T. erubescens! We don't even know for > sure it is from India as no information was provided - at least let's have > the State and altitude. T. erubescens grows at upper-mid altitudes (say c. > 6000-8000 ft.) and loves to be right beside streams in the rocks, where its > huge fronds often arch over the water from their long, pale, robust stipes. > The slightly similar T. tylodes though, likes more open banks and usually > not right by water. We are just too lacking in information here, including > from the photos. > Still I imagine it is probably T. erubescens - one confirmation is that > in younger fronds (and especially visible on smaller sterile fronds, there > are long, stiff, straight white hairs scattered along the underside of the > pinna-costae or pinnule-costule, which are very useful to help distinguish > it. > Let's hope for photos showing the right thing and focussable or > magnifiable next time! > Chris Fraser-Jenkins, at RBG, Kew. " > > > > On 24 May 2013 10:17, J.M. Garg <jmga...@gmail.com> wrote: > >> Forwarding again for Id assistance please. >> >> >> ---------- Forwarded message ---------- >> From: ankush prakash <ank.p...@gmail.com> >> Date: 23 May 2013 21:45 >> Subject: [efloraofindia:155757] id of a fern >> To: Balkar Singh <balkara...@gmail.com>, Dinesh Valke < >> dinesh.va...@gmail.com>, efloraindia <indiantreepix@googlegroups.com>, >> gurcharan singh sir <singh...@gmail.com> >> >> >> Please help me in identifying this herbarium specimen... >> dated 16th april 2013 >> >> Regards >> Ankush Prakash >> >> -- >> 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?hl=en. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> >> >> >> -- >> 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 (largest in the world): >> http://groups.google.co.in/group/indiantreepix (more than 2085 members & >> 1,53,000 messages on 30/4/13) or Efloraofindia website: >> https://sites.google.com/site/efloraofindia/ (with a species database >> of more than 8000 species). >> Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of >> India'. >> > > > > -- > 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 (largest in the world): > http://groups.google.co.in/group/indiantreepix (more than 2085 members & > 1,53,000 messages on 30/4/13) or Efloraofindia website: > https://sites.google.com/site/efloraofindia/ (with a species database > of more than 8000 species). > Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of > India'. > -- 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 (largest in the world): http://groups.google.co.in/group/indiantreepix (more than 2085 members & 1,53,000 messages on 30/4/13) or Efloraofindia website: https://sites.google.com/site/efloraofindia/ (with a species database of more than 8000 species). 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 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?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
