190 
THE' VEGETATION OF THE ZEMU 
845. Potehtilla leuconota Don. 
Llonakh, 12-16,000 ft., No. 1770. 
846. Potentilla microphylla Don. 
Zemu and Llonakh, 15-16,000 ft., JNos. 1279, 1482, 1445, 1500, etc. 
Frequent. 
var. ^labriuscula Wall. 
Zemu Valley, 13,000 ft.. Nos. 1378, 1536. 
var. acliillesefolia, 
Zemu and Llonakhj 15-17,000 ft.. Nos. 1258, 1570^ 2008. Frequent, 
var. commutata. 
Zemu and Llonakh, 14-17,000 ft.. Nos. 1348, 2182. 
847. Potentilla sericea Linn, 
var. conipacta var. nov. 
Planta forsan ad P. sericeam referenda sed Fotentillis in Herb. Kew. 
et Herb. Calc, omnibus dissimilis. 
Perpusilla in globum compacta, 6 cm. diametiens, supra solum 
2’5-3 cm. extendens. Radix crassus. Caulis in 5-10 ramos columnae- 
formes, arete compresses, vetustis foliis indutos, divisus. Folia divisa 
P. sericece more segmentis 2-3 mm. longis, argenteo-oapillatis. Floret 
inter folia sparsi, solitarii, 3-1 mm. diametientes, ad 5 mm. pedicellati. 
Corolla vix calycem excedens. 
The upper valleys of Llonakh, Sikkim, 14,500—15,000 feet. 
Nos. 1907, 2210. 
This Potentilla has the compact ^ rosette ^ habit of the typical 
Llonakh flora, forming small white mounds like ^ incrustations ^ on the 
flat wind-swept areas. It is probably a very reduced form of P, sericea. 
In view of the polymorphic character of this latter species and the many 
specific names already attached to its various forms, I think it better to 
give the Llonakh plant varietal rank only. 
848. Foteiitilia argyropliylla Wall, 
var. leiicocliroa. 
Zemu, 14,500 ft.. No. 1373. 
849. Potentilla nivea Linn, 
Llonakh, 14-16,000 ft.. Nos. 1888, 2010, 2038. 
98. Agrimonia Linn. 
850. Agrimonia Hiipatoriuni Linn 
Cheungtong, Lachen, and Zemu, 6-11,000 ft., No. 2707. 
