Literature references

3 literature references:

Author: Grierson,A.J.C. & Long,D.G.
Year: 1987
Title:
Source: Flora of Bhutan,Vol.1.(Part 3). Edinburgh: RBG
Author: Maxwell,R.H.
Year: 1991
Title:
Source: In:Dassanayake,M.D. & Fosberg,F.R.(Eds.) A revised handbook
Author: Terrell,E.E.
Year: 1977
Title:
Source: Checklist of Names for 3,000 Vas.Pl... Agric.Handbook No.505