Grierson, C.J.A and Long, G.D. <br/><br/>
Flora of Bhutan:  including a record of plants from Sikkim and Darjeeling. 

 - U.K:  RBG,  1999. 
 - v , 427-1033 p  ill,  23.3 cm. 
<br/><br/><label>ISBN: </label>1872291430