Nesphostylis bracteata

References

1. [1]The Flora of British India. (in 7 volumes) — Hooker J.D. · L.Reeve & Co.; London · 1872 - 1897 · http://www.biodiversitylibrary.org ↩︎Rather dated, but has some information on plant uses. It can be downloaded from the Internet.
2. [2]Mansfeld's Database of Agricultural and Horticultural Plants — http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336 ↩︎Terse details of a huge range of useful plants.
3. [3]Green Manures and Manuring in the Tropics — Sornay P. De. Translated by Flattely F.W. · John Bale, Sons and Danielsson Ltd.: London · 1916 · http://www.biodiversitylibrary.org ↩︎An excellent work on the subject, even if it was written almost 100 years ago. It also includes a section of useful Legumes. Can be downloaded from the Internet.