Pankaj ji But interestingly Xanthium strumarium (without any author) is accepted name according to the Plant List, with X. chinense Mill. as synonym I am tired of pointing out corrections to them.
-- 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 Thu, Oct 20, 2011 at 7:23 AM, Dr Pankaj Kumar <[email protected]>wrote: > There are many provisions in ICBN to conserve names which may actually > be wrong. > Article 14.2.of ICBN says, "Conservation aims at retention of those > names which best serve stability of nomenclature". > Stability like, the name of family Orchidaceae Juss., Gen. Pl.: 64. 4 > Aug 1789. is conserved against Orchidaceae Adanson, Fam. des plantes > 2: 68 1763. > > Just based on the popularity of usage, Xanthium indicum may be > considered conserved, but it is not yet conserved, as atleast the > plant list or GRIN doesnt consider them as same. > > For this particular case, it is yet to be resolved according to The > Plant List and both are till now considered distinct species with > Xanthium indicum Roxb. is an unresolved name but synonymous with > Xanthium inaequilaterum DC.. > > WHEREAS > > Xanthium strumarium L. Sp. Pl. 987 1753 is an unresolved name. > > Regards > Pankaj > > > > On Oct 20, 2:25 am, Satish Phadke <[email protected]> wrote: > > Agreed it has to be vice versa. Thanks for pointing out that. Even The > plant > > list has something else to say. I cant go more deeper in that context. > > > > On Wed, Oct 19, 2011 at 10:12 PM, Gurcharan Singh <[email protected] > >wrote: > > > > > > > > > > > > > > > > > > > > > Satish ji > > > Yes the identification is correct, but I fail to understand how > Xanthium > > > strumarium, a much earlier name be synonym and X. indicum, the accepted > name > > > > > -- > > > 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 Wed, Oct 19, 2011 at 9:40 PM, Satish Phadke <[email protected] > >wrote: > > > > >> *Xanthium indicum* Syn *Xanthium strumarium* > > >> Family : Asteraceae > > >> Marathi : Shankeshwar शंकेश्वर A vweed common on roadside > > >> Observed flowering in open areas around Pune city last few days > > >> Large herb Annual about 1m in height. > > >> Stem branches rough hairy. > > >> Leaves serrate alternate 5-8 cm ovate acute triangular or lobed' > appressed > > >> hairy. > > >> Flower heads 0.4-0.8mm across. Green when young in terminal and > axillary > > >> spikes.Barren heads crowded at apex. Fertile heads fewer. > > >> Fruits 2cm long with 2 erect mucronate beaks covered with hooked > prickles. > > >> Achenes 1cm bye 0.4 cm oblong or ovoid. Compressed black. > > > > >> -- > > >> Dr Satish Phadke > > > > -- > > Dr Satish Phadke >
