Pardeshi ji is quite right. The subspecies rank of the species proper is added only if another subspecies of that species is being mentioned. Also peoples' naming is too simple and hence in no way can be equated with plant species naming. Anyway the decisions about species delimitation and nomenclature are serious issues and dealt with only by the top ranking taxonomists who often disagree with each other! Only the international body of botanist can rule on these matters.
On Thu, Jun 18, 2009 at 7:45 PM, satish pardeshi <[email protected]>wrote: > > hi > let me explain abt the subspecies > when we are dealing with a species/ or number of species and the list > contain subspecies of Morinda tinctoria ie. Morinda tinctoria ssp > tinctoria then it can be written as M. tinctoria. but if we are > dealing with both the subspecies of Morinda tinctoria or the list > contains both the subspecies then it is necessary to write both the > subspecies as M. tinctoria ssp tinctoria and say M. tinctoria ssp > tomentosa. > and yes we can not correlate nomenclature of plants with that of > people. > > please add if some thing is not uptodate. > > regards > Satish Pardeshi > Consultant taxonomist > CDAC, Pune > > Stephen A wrote: > > Thanks Aparna Ji, > > > > Once again reading the age old basics. > > But you said that Morinda tinctoria subsp. tinctoria is usually written > as > > M. tinctoria. > > Is it correct? > > Because it is anyway a distinct species and no more M. tinctoria. > > And at higher level, leaving sub species, all are same. > > If it is so, then there is no point in keeping the sub species level. > > So, I personally feel that if a particular species is goes up to sub > species > > level, then it must be denoted as subsp. > > > > After all two people are not alike!!! > > > > Regards, > > > > > > Stephen... > > > > On Thu, Jun 18, 2009 at 6:17 PM, Aparna Watve <[email protected] > >wrote: > > > > > 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< > http://en.wikipedia.org/wiki/Botanical_nomenclature>, > > > a *form* (*forma*) is a low-level taxonomic rank< > http://en.wikipedia.org/wiki/Taxonomic_rank>below that of > > > variety <http://en.wikipedia.org/wiki/Variety_%28biology%29>. 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 <http://en.wikipedia.org/wiki/Botanical_name> followed > by > > > a cultivar epithet <http://en.wikipedia.org/wiki/Epithet>. The > cultivar > > > epithet is capitalised and put between single quotes: preferably it > should > > > not be italicized (unless it was given 1 January< > http://en.wikipedia.org/wiki/January_1> > > > 1959 <http://en.wikipedia.org/wiki/1959>, when it was Latin< > http://en.wikipedia.org/wiki/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 > > > > > > > > > > > > > > > > -- > > 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" > > > -- 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 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "indiantreepix" group. 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