Ziziphus jujuba is a classical example of later homonymy often cited in the text books.
The common Indian Ber plant, Chinese-date or Indian jujube was first described by Linnaeus under the name Rhamnus jujuba a species with leaves glabrous above and velvety beneath. Linnaeus also described Rhamnus ziziphus a species with leaves having glabrous under surface, As it turned out to be Millers (1768) gave the name Ziziphus jujuba for this species, so that when Gaertn. (1788) or Lamarck (1789) made the combination Ziziphus jujuba based on Rhamnus jujuba of Linnaeus, it turned out to be a later homonym of a different species Z. jujuba Mill. The name Z. jujuba (L.) Gaertn. or (L.) Lam. for Indian Jujube had to be rejected and next available name Z. mauritiana Lam., continued to be used for this species. Agreed The Plant List does not list Z. mauritiana but lists both Rhamnus ziziphus L. as well as Rhamnus jujuba L. as synonyms of Ziziphus jujuba Mill., implying that latest (2010) taxonomic judgement treats the two species as synonyms. We may like it or not the whole World is going to follow this List, and I think we have no choice. -- 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 Fri, Jul 22, 2011 at 12:30 PM, Giby Kuriakose <[email protected]>wrote: > > I agree H Sji that we shouldn't completely depend on the plant list. But, > as Singji pointed out that is a great effort and we cannot totally ignore > the same. I had gone through what ever literature available in our library > and got to know that Z. mauritiana has stipular thorns whereas, Z. > glabrata doesn't have hence I reached my conclusion. > > To clarify, the contradiction on synonym I referred the same flora books > from our library and most of the flora says Z. jujuba is a synonym of > Z.mauritiana (Flowering Plants; Biodiversity Documentation for Kerala, > Sasidharan KFRI, 2004 & Flowering Plants of Kerala, India, Nayar, T S et al > (TBGRI), 2006 ). > > I had mentioned the link for The plant list because that is the* *best > source available online now ( I proudly make a statement that when we > compile our data ours would be certainly become the best source of flora > reference online). The plant list is compiling by a group of taxonomists who > are working from leading botanical gardens in different parts of the world, > including Kew Botanical Garden where herbaria from world around is kept and > well maintained for a long time, I believe. Further, I beleive that they > are updating the database with several new publications. > > If we feel that there are contradictions or corrections let us write them. > > > Thanks and Regards, > Giby > > > > > > On 21 July 2011 21:52, Gurcharan Singh <[email protected]> wrote: > >> Let us not banish 'The Plant List' like that. It is for the first time we >> have complete list of all plant species with accepted names and synonyms. >> Agreed, there are still a large list of unresolved names and few >> controversial conclusions, but I think trained taxonomists can sort these >> out, and moreover, the list is being continuous improved and we may have >> improved version soon. >> >> >> -- >> 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, Jul 21, 2011 at 7:59 PM, H S <[email protected]> wrote: >> >>> Has i have told earlier, please don't depend on The palnt list... >>> there several mistakes encountered, >>> >>> search in literature and look often to the herbarium,,, will help in >>> correct identication.. >>> >>> regards, >>> >>> >>> On Thu, Jul 21, 2011 at 11:58 AM, Giby Kuriakose < >>> [email protected]> wrote: >>> >>>> Dear Maya, >>>> >>>> Does the plant has thorns? If the tree is unarmed (no thorns) then it is >>>> Z. glabrata and if the tree is armed then it is Z. mauritiana (Syn. >>>> jujuba). >>>> ( We have to clarify the contradiction on the synonym). I couldnt >>>> see thorns in the branch close up picture hence I reached a conclusion >>>> that >>>> it could be Z. glabrata (Z. trinervia). Please see the attachment. >>>> >>>> Dear all, >>>> >>>> According to the plant list there are 2 genus; Zyzyphus and Ziziphus ( >>>> http://www.theplantlist.org/browse/A/Rhamnaceae/) in Rhamnacae family >>>> jujuba kept under Ziziphus whereas, mauritiana kept under Zizyphus. Both >>>> are accepted as well. Any one has any clarification on this? >>>> >>>> >>>> >>>> Regards, >>>> Giby >>>> >>>> >>>> >>>> On 20 July 2011 13:55, maya ramaswamy <[email protected]> wrote: >>>> >>>>> >>>>> Hi could you please help me to identify this tree for seasonwatch? >>>>> Its very twiggy at base and leaves cover only the top. But it seems to >>>>> be a native variety, and birds love it in fruiting season.. >>>>> Thanks, >>>>> Maya Ramaswamy, >>>>> Bangalore >>>> >>>> >>>> >>>> >>>> -- >>>> GIBY KURIAKOSE PhD >>>> Ashoka Trust for Research in Ecology and the Environment (ATREE), >>>> Royal Enclave, >>>> Jakkur Post, Srirampura >>>> Bangalore- 560064 >>>> India >>>> Phone - +91 9448714856 (Mobile) >>>> visit my pictures @ http://www.flickr.com/photos/giby >>>> >>> >>> >>> >>> -- >>> - H.S. >>> >>> A scientific man ought to have no wishes, no affections, - a mere heart >>> of stone >>> >>> >> >> x >> > > > > -- > GIBY KURIAKOSE PhD > Ashoka Trust for Research in Ecology and the Environment (ATREE), > Royal Enclave, > Jakkur Post, Srirampura > Bangalore- 560064 > India > Phone - +91 9448714856 (Mobile) > visit my pictures @ http://www.flickr.com/photos/giby >
