194, 
THE VEGETATION OF THE ZEMU 
383. Saxifraga hemisphaerica H.f. & T. 
Jongsong La Valley, Llonakh, 17,000 ft., No. 2325. 
283. Saxifraga perpusilla H. f. & T. 
Nachegoh and Thangohung La in Zemu Valley, 16,000 ft., Nos. 
1490, 1491, 1721. 
384:. Saxifraga coarctata W. W. Smith, sp. nov. 
Species nana sectionis ' Microphylla \ 
Densissime caespitosa oaudiculis brevissimis (1*5-2 cm.). Folia 
densissime imbricata, ad 5 mm. longa, coriacea, elliptica vel spathu- 
lata, integra vel apice breviter tridentata sparse ciliata vel glabra. 
Caules fioriferi breves imbricatis foliis omnino vestiti. Flores solitarii 
sessiles. 8epala 1-1-5 mm. fere orbicularia, sparse glandulosa. 
Petala 2-3 mm. fere orbicularia, alba. Staminorum filamenta lata, 
calycem sequantia. Capsula immatura stylis erectiusculis brevibus 
( *5 mm. ) coronata. 
Yumchho La, 15,000 ft.. Nos. 1322, 1329. 
285. Saxifraga inconspicua W. W. Smith, sp. noy. 
Species Saxifragce microphyllce Royle, valde affinis sed minor ; 
habitu, foliis etiam minutioribus, glabris pedunculis distincta est. 
Perpusilla glaberrima, dense caespitose, foliis arete imbricatis 
2-3 mm. longis, lineari-oblongis, obtusis, Sedi albi more carnosulis. 
Caule% -fioriferi uniflori brevissimo pedunculo (1-2 mm.) omnino 
glabri. Sepala l'5-2 mm. erecta glaberrima, foliis similia. Fetala 
aequilonga et sepalis similia, augustiora. Capsula stylis brevibus 
erectiusculis coronata. 
Yumchho La, Sikkim, at an elevation of 14-16,000 ft.. Nos. 1524> 
1538. 
This saxifrage I at first in the absence of any types at Calcutta 
ascribed to 8. microphylla to which it is very closely allied. On a 
specimen however being sent to Kew for comparison with the original 
types of 8. microphylla it was considered to be distinct. It is the 
smallest described species of 8axifraga, It forms a crustaceous 
covering to the rocks in the vicinity of the pass. In shape and oonsis- 
tenev the leaves suggest those of a small 8edum'^ they have a shining 
greenish lustre ; the upper half is closely packed with chlorophyll- 
containing cells while the lower half is transparent and bladdery. The 
greenish sepals and petals are remarkably like the leaves in shape, 
consistency and colour. 
836. Saxifraga Jacquemontiana Dene. 
