I agree that this is Assam lemon. But the name *Citrus longilimon* Tanaka, although first published in 1959 and appears in several webpages, is not yet recognized by the major taxonomic databases, including TPL, POWO, GBIF etc. Also, a recent paper (cited below) discusses the morphological diversity of *C. medica* in NE India and includes specimens of similar fruit shape from the same region. So, I think we can treat this plant as *C. medica* L. for now along with *C. longilimon *Tanaka as a probable synonym, until it is further resolved.
Barbhuiya AR, Khan ML, Dayanandan S. Genetic structure and diversity of natural and domesticated populations of Citrus medica L. in the Eastern Himalayan region of Northeast India. Ecology and evolution. 2016 Jun;6(12):3898-911. https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece3.2174 Thanks! Vijayasankar --------------------------------------- Vijayasankar Raman, Ph.D. Sr. Research Scientist University of Mississippi, USA On Sun, Jan 10, 2021 at 12:29 AM J.M. Garg <[email protected]> wrote: > Forwarding again for Id confirmation or otherwise please. > > Some earlier relevant feedback: > > “Thanks once again Gurcharan ji, for the id. > *But similar plants have been identified as Citrus medica in the following > sites:* > http://www.vegtalk.org/fruits/citron-citrus-medica-t1635.html Citrus medica > - 'Corsican Citron' > http://en.wikipedia.org/wiki/Citron as Citron varieties > http://www.flowersofindia.net/catalog/slides/Citron.html Dinesh ji's > pictures > So how to confirm this? No picture for C. longilimon available in the > net. The protologue (in Bull.Univ. Osaka Perfect....1959) in also not > traceable. > With regards > R. Vijayasankar” > > > > *“I am not able to distinguish it from Citrus medica*, which has fruit which > is variable in shape > > http://www.healthkerala.gov.in/ayurveda/herb_images/4.jpg > > http://faculty.ksu.edu.sa/10439/Pictures%20Library/Forms/DispForm.aspx?ID=143 > http://www.flowersinisrael.com/Citrusmedica_page.htm > > - Tabish” > > > > “Vijayasankar ji and Tabish ji > Assam lemon, characterised by its long fruits (distinctinctly longer than > broad) have been named as C. limon at many websites, and as C. medica in > many websites. It should not look strange firstly because taxonomy of > Citrus is very confusing, secondly many authors consider C. limon as var. > or subsp. of C. medica, and as such those not going below species level > would simply call it C. medica. *Plus C. longilimon (character is in the > name itself) is a comparatively recently established species, not known to > me. NMPMD database is generally well researched, and it is from here as > well photographs of Assam lemon at various websites that > C. longilimon appears to be the most logical name. Plus GRIN also > recognises it as distinct species.* > C. limon is generally differentiated from C. medica by much thinner and > smoother rind. Let us try to find out other differentiating features (in > addition to longer fruit) of C. longilimon to arrive at final conclusion. > -- > Dr. Gurcharan Singh” > > "*Citrus medica *L. ! > Thank you. > Saroj Kasaju" > > ---------- Forwarded message --------- > From: Gurcharan Singh <[email protected]> > Date: Tue, 5 Jan 2021 at 17:33 > Subject: Fwd: [efloraofindia:370461] Flora of Manipur: Citrus longilimon > To: indiatreepix <[email protected]> > > > orwarding again for ID > Distributed as Citrus longilimon ? > <https://sites.google.com/site/efloraofindia/species/m---z/r/rutaceae/citrus/citrus-longilimon-1> > > Group discussion at > [efloraofindia:34312] Flora of Manipur: Citrus longilimon (google.com) > <https://groups.google.com/g/indiantreepix/c/z9wFVm6MmCs> > > ---------- Forwarded message --------- > From: Vijayasankar <[email protected]> > Date: Sunday, May 9, 2010 at 2:23:27 AM UTC+5:30 > Subject: [efloraofindia:34312] Flora of Manipur: Citrus longilimon > To: indiatreepix <[email protected]> > > > *Citrus longilimon* (Rutaceae). Planted in house gardens. Credit for the > id goes to Gurcharan ji & Dinesh ji (I originally identified this as C. > limon, now i am more convinced!). > > With regards > > R. Vijayasankar > > -- > You received this message because you are subscribed to the Google Groups > "efloraofindia" 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.com/group/indiantreepix?hl=en. > > -- > 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 view this discussion on the web, visit > https://groups.google.com/d/msgid/indiantreepix/61d5c25e-ccd6-4c6b-ac25-68b497eed049n%40googlegroups.com > <https://groups.google.com/d/msgid/indiantreepix/61d5c25e-ccd6-4c6b-ac25-68b497eed049n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- > With regards, > J.M.Garg > -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/indiantreepix/CAOZ1_20rx1KKwxSpzYXd1wTWLt%2BMqhZTq344%3DhR0Zm7fm01hJA%40mail.gmail.com.
