Thank you very much Dr. Pankaj for bringing in your perspective. As I read I realize that there is an entirely new group of taxonomists who in 1998, have come up with a revised system of classification, and I believe it is followed in some syllabus abroad based on DNA sequence and cladistic information.
I have learned a little bit of the two families you have mentioned, Apocynaceae and Asclepiadaceae after having seen some of the plants in the forests and parks from both the families in Mumbai, and refering to the book by Prof. R.N. Sutaria (1969), pg: 305 to 333. Here the main diferences have been listed by the author some of which are : Leaves opposite or whorled, exstipulate, the presence of intramarginal vein present, milky or watery juice in Apocynaceae. Leaves opposite, decussant, simple, entire, exstipulate, intramarginal vein not present in Asclepiadaceae. Apocynaceae not succulent in habit whereas Asclepiadaceae is mostly succulent and so on. So they look distinct to me. regards, Rashida. > Date: Tue, 8 Sep 2009 12:32:06 +0530 > Subject: [indiantreepix:17940] Re: Lygodium flexcuosum-climbing fern > From: [email protected] > To: [email protected] > CC: [email protected]; [email protected] > > > Dear Rashida > > It is not that Indians consider Bentham and Hooker's classification > only, its up to you if you wish to follow which classification. Some > times I even go against APG II as some points, one of which is, APG II > considers Acslepiadaceae as a part of Apocynaceae and and not as a > distinct family, tell me will you agree with it or not. > Incase you are working on any research article, you just need to say > which classification you have followed, and that may not be B & H. > Bentham and Hooker's classification is followed throughout the world > for maintaining the herbaria because it is supposed to be very easy to > understand. > Regards > Pankaj > > > > > On Tue, Sep 8, 2009 at 12:19 PM, Stephen A<[email protected]> wrote: > > Regarding classification doubt, as of India and Indians concern most > > dominant one is Bentham and Hooker's classification followed by many other > > classifications based on the phylogeny, life form, etc... > > Yes, indeed several researchers adopt many other classifications based on > > monographic works of individual families or genera, etc... > > But ecologists prefer life form or functional classification of plants. > > > > The recent taxonomic classification is APG II system of classification. > > > > You can get a clear overview of system of plant classification available so > > far from the following wikipedia link, > > > > http://en.wikipedia.org/wiki/List_of_systems_of_plant_taxonomy > > > > Regards, > > > > > > Stephen... > > > > > > On Mon, Sep 7, 2009 at 6:18 PM, rashida atthar <[email protected]> > > wrote: > >> > >> Thank you very much Dr. Stephen for the very pertinent explanations and > >> links. > >> > >> May I ask one more question which I have had for a while now, it pertains > >> to the classification systems adopted. I wish to know which is the > >> dominant system of classification, the one based on plant characteristics > >> or > >> the one based on plant relations which I believe leads to re-classification > >> of some of the plants into a different family altoghether. Is there any > >> other system adopted by researchers? Thank you. > >> > >> regards, > >> Rashida. > >> > >> > >> > >> > >> > >> > >> ________________________________ > >> Date: Mon, 7 Sep 2009 17:00:41 +0530 > >> Subject: [indiantreepix:17855] Re: Lygodium flexcuosum-climbing fern > >> From: [email protected] > >> To: [email protected] > >> CC: [email protected]; [email protected] > >> > >> Yea I do agree it is called Basionym. > >> The exact definition mentioned in the ICBN is follows, > >> "A previously published legitimate name-bringing or epithet-bringing > >> synonym from which a new name is formed for a taxon of different rank or > >> position" > >> The same can be located from the following link, > >> http://ibot.sav.sk/icbn/no%20frames/0120AppendixVII.htm > >> > >> The latest Vienna code link given by you is broken > >> The same can be located from the following link. > >> http://ibot.sav.sk/icbn/main.htm > >> > >> Regards, > >> > >> Stephen... > >> > >> > >> On Mon, Sep 7, 2009 at 4:46 PM, Pankaj Kumar <[email protected]> > >> wrote: > >> > >> the latest Vienna Code of ICBN can be accessed at the following link > >> > >> http://www.ibot.sav.sk/karolx/kod/0000Viennatitle.htm > >> > >> Just to add to the information by Dr. Stephen, the bracketed author is > >> often referred to as the author of the basionym. > >> > >> Regards > >> Pankaj > >> > >> > >> > >> -- > >> Think about the Environment before printing this e-mail! ü > >> +----------- --------- --------- --------- --------- --------- --------+ > >> Think B4U Print > >> 1 ream of paper = 6% of a tree and 5.4kg CO2 in the atmosphere > >> 3 sheets of A4 paper = 1 litre of water > >> +----------- --------- --------- --------- --------- --------- --------+ > >> "Lets Protect What We Enjoy" > >> > >> >> > >> > >> ________________________________ > >> Date India’s Teen Diva. Find out if you hit it off with her or are her > >> fiery opposite. Drag n’ drop > > > > > > -- > > Think about the Environment before printing this e-mail! ü > > +----------- --------- --------- --------- --------- --------- --------+ > > Think B4U Print > > 1 ream of paper = 6% of a tree and 5.4kg CO2 in the atmosphere > > 3 sheets of A4 paper = 1 litre of water > > +----------- --------- --------- --------- --------- --------- --------+ > > "Lets Protect What We Enjoy" > > > > > _________________________________________________________________ News, sports, entertainment and fine living…learn the ropes on MSN India http://in.msn.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "indiantreepix" group. 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