Yes Prashant ji and Mr. Porcher
This plant has been well discussed on our group after Vijayasankar uploaded it in 2010:
Here is my note from that:
"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 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."
Before that Prashant ji had also uploaded the plant:
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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