Thanks all the participants for an interesting and informative discussion. Satish Phadke
2009/6/20 <[email protected]> > Tanks for a elaborate answer > Madhuri > > Sent from BlackBerry® on Airtel > > ------------------------------ > *From*: Aparna Watve > *Date*: Sat, 20 Jun 2009 01:38:24 +0530 > *To*: J<[email protected]> > *Subject*: [indiantreepix:13523] Re: Scientific names of Plants > There exists a lot of variation in nature. And hence you must have noticed > that plant descriptions in literature mostly include ranges for variable > characters such as leaf size. For example in a flora, leaves of species are > given as 6-10 inches X 2-4 inches. Only a well trained taxonomist can decide > whether the differences that are seen amount to naming of a new subspecies > or variety. And this process includes checking, rechecking populations, > screening literature, following taxonomic laws and is rigorously monitored > by an international body (ICBN). > Suppose we find a specimen, and find major differences from description > given, we should go on to look at good floras, or family monographs or > research papers including that species and see whether that species has been > further divided into another subspecies or variety by scientists. As in case > of species within a family, keys are provided for identification of known > infraspecific ranks (subspecies, varieties) and we have to follow that key > to see if our specimen fits or is close to any of the known > subspecies/varieties. > Don't know if I am clear enough. I dont have a flora at hand, but others > can contribute with more concrete examples. You try searching through some > of the taxonomic journals (like Taxon) to see how naming of a new subspecies > or variety is done. > > aparna > - > On Sat, Jun 20, 2009 at 12:19 AM, J <[email protected]> wrote: > >> >> >> On Fri, Jun 19, 2009 at 6:39 PM, Madhuri Pejaver >> <[email protected]>wrote: >> >>> >>> >>> Dear Aparna, >>> So nice of you to write all details. >>> But--- >>> when some differences are seen from the sps how to decide whether it is a >>> subsps or a varity? >>> Madhuri >>> >>> --- On Thu, 18/6/09, Aparna Watve <[email protected]> wrote: >>> >>> > From: Aparna Watve <[email protected]> >>> > Subject: [indiantreepix:13414] Re: Scientific names of Plants >>> > To: "Usha Desai" <[email protected]> >>> > Cc: [email protected] >>> > Date: Thursday, 18 June, 2009, 6:17 PM >>> > Dear >>> > all, >>> > This was a tricky one. : I >>> > had to open the ICBN (International Code for Botanical >>> > Nomenclature) to check it. Thanks Ushaji for making me go >>> > back to basics. >>> > >>> > I am giving my notes, but I >>> > request other botanists on this list to correct me where >>> > wrong, >>> > >>> > >>> > >>> > [1] Morinda tinctoria subsp pubescence >>> > >>> > this one is simple: it >>> > means that the species Morinda tinctoria has >>> > two/more subspecies, the first one is Morinda tinctoria subsp tinctoria >>> (usually written only as Morinda tinctoria) and the other one is Morinda >>> tinctoria subsp pubescence >>> > (which must be differing from the first in some >>> > characters) (there could be more subspecies under this same >>> > species, having different ending epithets). At times the >>> > connecting link (subsp.) is not used as there is only one rank below >>> that of >>> > species. >>> > >>> > >>> > [2] Morinda tinctoria var tomentosa >>> > >>> > Similar to above: it means >>> > that the species Morinda tinctoria has two >>> > or more varieties, the first one is Morinda >>> > tinctoria var. tinctoria >>> > (usually written only as Morinda >>> > tinctoria) and the second one is Morinda >>> > tinctoria var. tomentosa (which must be >>> > differing from the first in some characters) (there could be >>> > more varieties under this same species, having different >>> > ending epithets) >>> > >>> > >>> > [3]Morinda >>> > tinctoria f xanth >>> > >>> > This is a form or forma of the species. In >>> > botanical >>> > nomenclature, a form (forma) is a >>> > low-level taxonomic >>> > rank >>> > below that of variety. The abbreviation "f." or >>> > the full "forma" is put before the infraspecific >>> > epithet to indicate the rank. A form usually designates a >>> > group with a noticeable but minor >>> > deviation. >>> > >>> > [4] Morinda tinctoria X Morinda >>> > citrifolia >>> > >>> > This is an interspecific >>> > hybrid. >>> > >>> > [5]Morinda >>> > tinctoria 'Neil' >>> > This is a cultivar of Morinda >>> > tinctoria. A cultivar name consists of a >>> > botanical >>> > name followed by a cultivar >>> > epithet. The cultivar epithet is capitalised and >>> > put between single quotes: preferably it should not be >>> > italicized (unless it was given 1 >>> > January 1959, >>> > when it was Latin form and therefore >>> > tolerated. But the practice was discontinued as it was often >>> > confused with the botanical names). >>> > >>> > >>> > [6]+Morindixora 'Sangita' >>> > This looks like is a >>> > intergeneric hybrid of Morinda and Ixora genus and a cultivar named as >>> > ‘Sangita’ >>> > >>> > >>> > The picture goes very >>> > confusing …. >>> > Cannot agree more that it is >>> > all often very confusing. BUT there is a method in this >>> > madness. The web has a number of websites explaining plant >>> > nomenclature, best and easiest of which is wikipedia but the >>> > ultimate one (although needing lots of patience to >>> > understand) is International Code for Botanical >>> > Nomenclature. >>> > >>> > >>> > So have I passed the exam? : >>> > ) >>> > >>> > Aparna >>> > PS: also attaching a word file of the answer as the >>> > italics may be lost in mail >>> > >>> > --- >>> > Dr. Aparna Watve >>> > Asha Appt, Shanti Nagar, Ekata Colony >>> > Nr. BSNL tower, Akbar Ward, >>> > Seoni.480661 >>> > tel: 07692-228115 >>> > mobile: (0)9755667710 and 9822597288 still works >>> > >>> > >>> > > >>> > >>> > >>> > >>> >>> >>> Love Cricket? Check out live scores, photos, video highlights and >>> more. Click here http://cricket.yahoo.com >>> >>> >>> >>> -- >>> Dr. Aparna Watve >>> Dr. Aparna Watve >>> Asha Appt, Shanti Nagar, Ekata Colony >>> Nr. BSNL tower, Akbar Ward, >>> Seoni.480661 >>> tel: 07692-228115 >>> mobile: (0)9755667710 and 9822597288 still works >>> >>> >>> >>> >>> >>> -- http:// satishphadke.blogspot.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "indiantreepix" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.co.in/group/indiantreepix?hl=en -~----------~----~----~----~------~----~------~--~---
