Watve aparnaji You get 200 out of 100 for I have learnt a lot from your reply. & I admire your prompt reply. all the best wishes.Desai usha
On 18/06/2009, 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_(biology)>. 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 > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
