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slopes are given. Trigonella-formation dominated on the 
eastern slope. Here Stipa orientalis, Eurotia, Astragalus lasio- 
semius, Artemisia aff. maritima, Acantholimon alatavicum, Poly- 
gonum paronychioides, Chrysanthemum pamiricum were com- 
mon; Trigonella Emodi, Cicer pungens, Crepis flecuosa more 
rare, while Arenaria Meyeri was to be found in clefts. These 
plants formed a very dense vegetation, from a distance lending 
a greenish hue to the mountain-side. 
On the southern slope the following species were noted: 
Stipa orientalis, Hedysarum cephalotes, Lappula microcarpa 
(very scattered), and Psychrogeton turcestanicum. The plants 
were so far apart that from a distance the slope looked 
quite brown. 
We see, then, that the vegetation on both the eastern 
and southern slopes is formed by the species of the Trigonella- 
formation, while on the northern slopes these were almost 
totally wanting. 
West of the Chargush Pass (height of the pass, about 
4,200 métres), two totally green slopes with a northern ex- 
posure were examined. They were both bounded on the 
south by steep talus slopes, under whose stones, the water 
poured down from the mountain tops. From the talus it 
sifts in under the green slopes, presumably flowing under the 
ground through a layer of stones as described above. The 
soil is humous, almost black, and moist a few centimétres 
under the surface. I did not see the substratum of stones, 
but its presence must be inferred from the fact that not a 
particle of water flows on the surface of the slopes. On these 
was a close vegetation of the following species: Ranunculus 
sp., Cerastium trigynum, Saxifraga hirculus, Swertia marginata, 
Primula: nivalis var. macrocarpa, Carex sp., Aster flaccidus 
(= tibeticus), Delphinium cachemirianum, Lagotis borealis, Par- 
nassia subacaulis, Myosotis silvatica, Isopyrum anemonoides, Pa- 
paver radicatum, Gentiana falcata, Hymenolaena Lindleyana var. 
bucharica, Melandrium triste, Draba alpina and media, Astra- 
galus tianschanicus var. pamiricus, Poa persica var, alpina, P. 
