On Nov 18, 5:49 pm, Gurcharan Singh <singh...@gmail.com> wrote: > Dear Ron > I also have been thinking that perhaps I. digitata and I. mauritiana are > sufficiently distinct. This conclusion is base on the climber which I had > uploaded from Delhi, and was variously identified (most suggesting I. > batatas; but having seen I. batatas was not convinced) but I finally found > it matching with some photographs of I. degetata on the net. I am uploading > the same for comparison and validation > > -- > 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: 9810359089http://people.du.ac.in/~singhg45/ > > On Thu, Nov 4, 2010 at 2:37 AM, Ron_Convolvulaceae > <and...@optonline.net>wrote: > > > > > On Nov 4, 5:22 am, Ron_Convolvulaceae <and...@optonline.net> wrote: > > > On Sep 24, 5:34 am, mani nair <mani.na...@gmail.com> wrote: > > > > > Dinesh ji, Excellent photo. > > > > > On Fri, Sep 24, 2010 at 12:09 PM, Muthu Karthick <nmk....@gmail.com> > > wrote: > > > > > Was there any recent nomenclatural change for this plant? > > > > > For me this looks like *Argeryia* sp.? > > > > > > On Fri, Sep 24, 2010 at 8:52 AM, Dinesh Valke < > > dinesh.va...@gmail.com>wrote: > > > > > >> ... the last two photos can be seen at: > > > > >> 1) > >http://www.flickr.com/photos/dinesh_valke/1251472510/in/photostream/ > > > > >> 2) > >http://www.flickr.com/photos/dinesh_valke/1251484452/in/photostream/ > > > > > >> both clicked at Sanjay Gandhi National Park ... both at August 26, > > 2007 at > > > > >> 8.45am IST ... must be a matter of few seconds' difference. > > > > > >> BUT there is mix-up of plants. > > > > >> The cluster of buds belong to *I. mauritiana* ... please validate. > > > > > >> Regards. > > > > > >> On Fri, Sep 24, 2010 at 5:08 AM, tanay bose <tanaybos...@gmail.com > > >wrote: > > > > > >>> I dont think last picture is of Ipomoea mauritiana > > > > >>> Tanay > > > > > >>> On Fri, Sep 24, 2010 at 1:26 AM, Balkar Arya <balkara...@gmail.com > > >wrote: > > > > > >>>> Dinesh Ji > > > > >>>> I think last picture is somewhat different > > > > > >>>> On Fri, Sep 24, 2010 at 1:02 AM, Dinesh Valke < > > dinesh.va...@gmail.com>wrote: > > > > > >>>>> ... commonly known as: giant potato, large forest ipomoea, > > morning > > > > >>>>> glory • Bengali: bhumikumra • Hindi: भूई कोहाड़ा bhuyikohada, > > bilaikand • > > > > >>>>> Kannada: bhoomichakragedde, bujagumbala, nadakumbala • Malayalam: > > > > >>>>> mutalakanta, mutalakkilannu • Marathi: भुईकोहळी bhuikoholi, भुई > > कोहळा > > > > >>>>> bhuikohala • Sanskrit: ksiravidari, vidari, vidari-kanda • Tamil: > > > > >>>>> palmudangi, palmudukan kizhangu • Telugu: bhuchakragradda, > > nelagummudu > > > > > >>>>> Regards. > > > > > >>>> -- > > > > >>>> Regards > > > > > >>>> Dr Balkar Singh > > > > >>>> Head, Deptt. of Botany and Biotechnology > > > > >>>> Arya P G College, Panipat > > > > >>>> Haryana-132103 > > > > >>>> 09416262964 > > > > > >>> -- > > > > >>> *Tanay Bose* > > > > >>> Research Assistant & Teaching Assistant. > > > > >>> Department of Botany. > > > > >>> University of British Columbia . > > > > >>> 3529-6270 University Blvd. > > > > >>> Vancouver, B.C. V6T 1Z4 (Canada) > > > > >>> Phone: 778-323-4036 (Mobile) > > > > >>> 604-822-2019 (Lab) > > > > >>> ta...@interchange.ubc.ca > > > > > > -- > > > > > Muthu Karthick, N > > > > > Junior Research Fellow > > > > > Care Earth Trust > > > > > Chennai - 61 > > > > >www.careearthtrust.org > > > > Hello, > > > > I would like to bring to light a factor which I perceive to be > > > relevant and that is the historical confusion between Ipomoea digitata > > > and Ipomoea mauritiana. > > > > Ipomoea digitata and Ipomoea mauritiana are both legitimate species > > > but descriptions of the 2 contain sufficient over-lapping features to > > > instill confusion. > > > > So far , I have been unable to (with any certainty) distinguish > > > between Ipomoea digitata and Ipomoea mauritiana and photos on the web > > > using both epithets appear to be the same plant. > > > > I have seen Ipomoea digitata listed as a synonym of Ipomoea mauritana > > > and Ipomoea mauritiana listed as a synonym of Ipomoea digitata. > > > > Here are a couple synonyms I have for Ipomoea digitata : > > > Ipomoea rubrocincta > > > Ipomoea paniculata var. digitata > > > > Here is the list of synonyms I have for Ipomoea mauritiana : > > > Synonym:Ipomoea ennealoba > > > Synonym:Ipomoea eriosperma > > > Synonym:Ipomoea insignis > > > Synonym:Ipomoea eriosperma > > > Synonym:Ipomoea paniculata > > > > A check for both names inhttp://ipni.org/ipni/plantnamesearchpage.do > > > may prove useful > > > > There are various subtypes listed for Ipomoea digitata > > > >The both species are considered to have originated in the new world > > tropics and spread around the globe from there. > > > > I perceive that Ipomoea mauritiana must be clearly distinguished from > > > Ipomoea digiitata before any definitive ID's can be arrived at for > > > these 2 similarly featured species. > > > > I hope my thoughts on the matter may be of some value... > > > > regards, > > > > Ron > > > > Ipomoea-digitata-Delhi-1.jpg > 216KViewDownload > > Ipomoea-digitata-Delhi-2.jpg > 143KViewDownload > > Ipomoea-digitata-Delhi-3.jpg > 126KViewDownload > > Ipomoea-digitata-Delhi-4.jpg > 264KViewDownload > > Ipomoea-digitata-Delhi-5.jpg > 205KViewDownload
Gurcharan ji, Thanks for your photo contributions as they clearly show that the sepals are very distinctly different. The leaves of both species (including variant forms) can look very similar and the corolla color may also vary. I personally would be interested to see closeups of the seeds of both species for comparison. True climbers have stems and stem tips that either always twine or at least have the ability to twine when encountering something to climb , as compared to a plant with non-twining stems that may weave through bushes or lean on a support and therefore some branches grow upward but not truly climbing. The ars-grin has the following entries for some reference Ipomoea mauritiana http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?311648 Ipomoea digitata auct. http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?406359 Ipomoea digitata http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?20159 I do perceive that Ipomoea mauritiana and Ipomoea digitata are distinct species but the descriptions in the literature and keys still contains enough over-lap of features to make a clear differential challenging and it is my thoughts that the sepals and seeds may be the most important parts to examine for a clearer distinction between the 2 species , especially when all the variations of the corolla and leaves are taken into consideration. regards, Ron
