250 
interesting Flora of this steppe. Yet, at some hundred 
feet above the present boundary of the growth of trees, 
are seen their dead stems, and, on the ground, many 
prostrate shrubs, such as Juniperus nana, (?) Betula nana, 
several Willows, Mespilus uniflora, and Dryas octopetala. 
Many of the herbaceous plants of the preceding region 
occur also in this: but among those entirely confined 
to it are the following :—Eriophorum Chamissonis (n. sp.) 
Athamanta crinita (n. sp.), Claytonia acutifolia, Gentiana al- 
gida, nutans and rotata, Sibbaldia procumbens, Luzula spicata, 
. Ozyria. reniformis, Arenaria (Helmio, aff.), nardifolia and 
another new species, Biebersteinia odora, Cerastium pauci- 
forum? Lychnis uniflora and tristis (n. sp.), Saxifraga cer- 
nua, glandulosa (n. sp.), terektensis (n. sp.), and hieraciifolia, 
Sedum elongatum (n. sp.), and quadrifidum, Thermopsis alpina, 
Potentilla grandiflora and nivea, Papaver nudicaule, Ranun- 
culus isopyroides, Thalictrum alpinum, Gymnandra bicolor 
(n. sp.) several species of Pedicularis, Draba carnosula 
(m. sp. hydrophila (n. sp.), and lactea; Parrya ezscapa 
(n. sp.), Corydalis pauciflora, Phaca frigida, Trifolium grandi- 
florum (n. sp.), Artemisia alpina, Cineraria (aurantiace, aff.) 
and lyrata (n. sp.), Hieracium crocatum (n. sp.), some kinds 
of Leontodon, Pyrethrum pulchrum (n. sp.), Saussurea pygnet: 
Orchis viridis, and various Grasses and Sedges. Some plants 
also grow in this district that are found at every elevation 
throughout the country. Caltha palustris generally adorns 
the margin of little alpine rivulets; Hpilobium angustifolium 
also is found in spots above the boundary of trees, que 
unaltered in its appearance; Erythronium Dens Canis springs 
Up wherever the snow is just melted. 
: The highest limit of trees, which I have estimated at 6,500 
. Parisian feet, is not, however, always the same. It 
depends partly on the species of tree, partly on the aspect 
of the declivit : ide of 
vity of the mountain. On the southern side 
the mountain, at the rise of the Tscharysch, I found the 
last stem of Pinus Cembra at an elevation of 6,54l feet 
—- the sea. When I ascended the north side of the 
Plateau des Korgon, I found the highest limit of the same 
