Dear Sir, Thank you very much for the in depth analysis from which I could understand that Cycas pschannae has priority over C. andamanica. With my limited knowledge on the group I am unable to understand the differences between phytogeographical species and taxonomic species. With renewed thanks and regards. Tapas Chakraborty.
On Oct 6, 2017 21:43, "LALJISINGH" <[email protected]> wrote: > Dear Sir, > > Thank you very much for comments and post on e-flora of India e-group > regarding > status of Cycas of Andaman and Nicobar Islands.I have several serious > concerns about your > comments in terms of science (novelty of the species concept) and herewith > I have added > following comments. > 1. The World Cycads list is only based on phytogeographical distribution > of species, not > based on taxonmy. > In protologue of Cycas sainanthii, the author mentioned occurrence or > derived from > the Andaman and Nicobar Islands of this species without exsiccata or any > other supporting > evidence. Till date no published records on geographical range of this > species showing > any support to its distribution or occurrence in the Andaman and Nicobar > Islands. I would > like to clarify that there is no record and also neither isotype nor > paratypes(collected > from Andaman and Nicobar Islands)has been found in record at any > recognized herbaria. > In protologue of Cycas sainanthii there is no obvious reason to consider > Cycas pschannae as synonyms. It is a serious concern in terms of science > (novelty of the > species concept) Pl. consult protologue of Cycas pschannae and Cycas > sainanthii also more > recently published data in Bionatur37(1):38-55, 2017. > 2. C. pschannae and Cycas dharmrajii are differ from other known species > of Cycas in > combination of taxonomical and morpho-anatomical characters as mentioned > in protologue > (Pl.see Bionatur37(1):38-55, 2017. > 3. Both Cycas andamanica and Cycas pschannae are reported from the Andaman > and Nicobar > Islands. According to the principal of priority, Cycas andamanica does not > justify as a > new species because…. > Cycas andamanica (International Journal of Innovation Sciences and > Research Vol.4, No, 9, > pp.473-476, September- 2015) published after the Cycas pschannae (Int. J. > Curr. Res. > Biosci. Plant Biol. 2015, 2(8): 35-37 ISSN: 2349-8080 Volume 2 Number 8 > (August-2015) pp. > 35-37). > When the principle of priority is applied to this situation Cycas > pschannae gets > priority. On this basis Cycas andamanica is synonym of Cycas pschannae. > Therefore, because of the above mentioned issues and facts, It is clear > that none of the > features cited in the published protologue of Cycas sainanthii are > distinct enough to > justify Cycas pschannae, Cycas andamanica and Cycas dharmrajii as synonyms > of Cycas > sainanthii. On the basis of principle of priority Cycas andamanica is > synonym of Cycas > pschannae. > Cycas dharmrajii is entirely different from other known species in having > the giant trunk > with swollen base and dimorphic aerial roots, megasporophlls with > well-defined 10–28 > paired lateral hook-like structure, 2 schizo-lysigenous mucilage canals in > leaflets etc. > > > with regards > Dr. Lal Ji Singh > Scientist-D & Head of office > Botanical Survey of India > Andaman & Nicobar Regional Centre > Port Blair-744102 > Email:[email protected], > [email protected] > -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. Visit this group at https://groups.google.com/group/indiantreepix. For more options, visit https://groups.google.com/d/optout.
