Jatropha nana Dalzell var. bengalensis C.H. Rahman & S.Mondal (Euphorbiaceae)

[Tapas Chakrabarty]

I am attaching herewith three images of Jatropha nana Dalzell var. bengalensis C.H. Rahman & S.Mondal [in Indian J. Forest. 35(4): 477, f. 1, Plate 1. 2012]; N.P. Balakr. et al. in Fl. India 23: 505. 2012] which is occurring in dry forest beds in Birbhum District, West Bengal.  The local name is Chem alu.

It may be mentioned that Nerlekar [in Phytotaxa 213(2): 155-158. 2015] merged this variety with var. nana having found no difference.

However, please look at the publication of Nerlekar (2015) as well as images of Jatropha nana in the EFI webpage.  Here, in the typical variety, the capsules are broadly oblong while the fruits in var. bengalensis are suglobose.  Hence I am maintaining this as a distinct variety on this fruit character as well as due to the disjunct distribution (var. nana in Maharashtra and var. bengalensis in West Bengal). My treatment will come out shortly.

Thanking you,

Tapas Chakrabarty.

[Nidhan Singh]

Thanks Tapas Ji for this excellent post and addition...

[J.M. Garg]

Thanks, Tapas ji, for deeper insights. 

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[J.M. Garg]

Taking it as Jatropha nana Dalzell & Gibson, Bombay Fl. 229 1861. (syn: Jatropha nana var. bengalense C.H.Rahaman & S.Mondal) in view of discussions in another thread.

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With regards,
J.M.Garg

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[Tapas Chakrabarty]

That's fine.

[Aarti S. Khale]

Very nice.

New to me.

Regards,

Aarti