My exerience of S. asper and S. oleraceous leads me to think that there is lot of intermixing. A plant which looks like S. oleraceous with no spines and straight auricles tends to have spines and some rounded auricles when mature. There are only two photographs (one mine from Delhi and One yours) which I have been able to confirm S. asper hundred per cent.
-- 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: 9810359089 http://people.du.ac.in/~singhg45/ On Tue, Apr 19, 2011 at 10:45 AM, Alok Mahendroo <[email protected]>wrote: > Sir, cpuld this be the S. oleraceous.. I am sending a photo of the > comparison of the two leaf bases.. the pointed one should be S. > oleraceous according to > > http://www.sbs.utexas.edu/mbierner/bio406d/images/pics/ast/sonchus_oleraceus.htm > > regards > Alok > > On Tue, 2011-04-19 at 07:27 +0530, Gurcharan Singh wrote: > > S. oleraceous is the commonest of all > > > > > > > > -- > > 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: 9810359089 > > http://people.du.ac.in/~singhg45/ > > > > On Mon, Apr 18, 2011 at 9:35 PM, Alok Mahendroo > > <[email protected]> wrote: > > Sir, > > Do we find any other varieties apart from S. asper and S. > > arvensis in > > India? > > regards > > Alok > > > > Mon, 2011-04-18 at 14:44 +0530, Gurcharan Singh wrote: > > > Sochus asper, but one of those doubtful cases, after seeing > > your > > > typical S. asper in another thread. > > > > > > > > > -- > > > 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: 9810359089 > > > http://people.du.ac.in/~singhg45/ > > > > > > On Mon, Apr 18, 2011 at 1:42 PM, Alok Mahendroo > > > <[email protected]> wrote: > > > Dear Tanay ji and Gurcharan ji, > > > Sending the leaf view of this one too... > > > regards > > > Alok > > > > > > > > > On Tue, 2011-03-15 at 11:27 -0700, tanay bose wrote: > > > > Looks like Sonchus asper but I cant confirm with a > > good view > > > of the > > > > leaf > > > > Tanay > > > > > > > > On Tue, Mar 15, 2011 at 9:35 AM, Gurcharan Singh > > > <[email protected]> > > > > wrote: > > > > Sonchus asper > > > > > > > > > > > > Plants perennial, up to 2 m tall, leaves > > mostly > > > entire or > > > > denticulate, not spiny margined, heads > > 3-5 cm > > > across.......S. > > > > arvensis > > > > Plant annual, up to 1.5 m tall; leaves > > pinnately > > > divided, > > > > margins spinulose, heads 1.5-2.5 cm > > > > across.......................S. asper > > > > > > > > > > > > > > > > -- > > > > 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: 9810359089 > > > > http://people.du.ac.in/~singhg45/ > > > > > > > > > > > > > > > > On Tue, Mar 15, 2011 at 9:48 PM, Alok > > Mahendroo > > > > <[email protected]> wrote: > > > > Dear friends, > > > > This could be belonging to Thistle > > family... > > > but which > > > > one > > > > What is the difference between > > Sonchus asper > > > and S. > > > > arvensis? > > > > > > > > Location Kalatope, Chamba district > > > > Altitude 2100 mt > > > > Habitat wild > > > > Habit herb > > > > Season March > > > > > > > > Regards > > > > Alok > > > > -- > > > > Himalayan Village Education Trust > > > > Village Khudgot, > > > > P.O. Dalhousie > > > > District Chamba > > > > H.P. 176304, India > > > > www.hive.interconnection.org > > > > www.hivetrust.wordpress.com > > > > www.forwildlife.wordpress.com > > > > > > > > > > > > -- > > > > Himalayan Village Education Trust > > > > Village Khudgot, > > > > P.O. Dalhousie > > > > District Chamba > > > > H.P. 176304, India > > > > www.hive.interconnection.org > > > > www.hivetrust.wordpress.com > > > > www.forwildlife.wordpress.com > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > 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) > > > > 604-822-6089 (Fax) > > > > [email protected] > > > > > > > > Webpages: > > > > http://www.botany.ubc.ca/people/mberbee.html > > > > http://www.botany.ubc.ca/people/gradstud.html > > > > https://sites.google.com/site/efloraofindia/ > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > Himalayan Village Education Trust > > > Village Khudgot, > > > P.O. Dalhousie > > > District Chamba > > > H.P. 176304, India > > > www.hive.interconnection.org > > > www.hivetrust.wordpress.com > > > www.forwildlife.wordpress.com > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > Himalayan Village Education Trust > > Village Khudgot, > > P.O. Dalhousie > > District Chamba > > H.P. 176304, India > > www.hive.interconnection.org > > www.hivetrust.wordpress.com > > www.forwildlife.wordpress.com > > > > > > > > > > > > > > -- > Himalayan Village Education Trust > Village Khudgot, > P.O. Dalhousie > District Chamba > H.P. 176304, India > www.hive.interconnection.org > www.hivetrust.wordpress.com > www.forwildlife.wordpress.com >
