FLORA OF TIBET OR HIGH ASTA. 231 
Savifraga Jacquemontiana .... 13,000 to 18,000 ft. 
Sedum crenulatum .......04... 12,000 ” 
» guaddrifidum............ 11,000 ” 
Cortia Hookerit oo... cee 13,000 ” 
Aster heterocheta ............ 14,000 ” 
Lrigeron andryaloides vii... 9,000 ‘ 
Antennaria muscoides ........ 16,000 ” 
Leontopodium alpinum ........ 10,000 » 
Allardia glabra oo... cece eee 15,000 - 
Tanacetum gossypinum ........ 16,000 ” 
Artemisia desertorum ........ 17,000 om 
% Campbelli ...... yee. 16,000 ” 
” MUNOM ove cence ences 15,000 ” 
Saussurea Thomsoni .......... 17,000 ” 
” wernertoides ........ 16,000 » 
, subulata ...... 0.000. 15,000 ” 
” SACTA vec ee eee 14,000 ” 
" tridactyla .......... ” » 
yy sorocephala .......... » ” 
Taravacum officinale .......... 1,000 ” 
Androsace Selago .......6.04 15,000 ” 
Gentiand AMENA... 6... eee 14,000 ” 
» — NUDIGENA ..... cee eee 16,000 ” 
Pleurogyne Thomsoni .......... 15,000 ” 
Lagotis decumbens .........45+ 16,000 » 
Nepeta tibetica vi... cece cece. 17,500 
Onyria AgyNnd. cco cece cc cvees 17,500 
TuNCUus MINIMUS Voce cere cree 16,000 to 18,000 ft. 
Avena subspicata... 6... cece 10,000 18,500 ft. 
Poa hirtiglumis .vicceecceeeees 16,000 18,000 ft. 
Elymus stbivicus.. 0... e eens 10,000 ” 
Excepting Nepeta tibetica and Oxyria digyna, at 17,500 ft., 
these fifty species are recorded as ascending to 18,000 ft., unless 
we are to understand that they were collected somewhere between 
the two altitudes given in each instance. The only safe infer- 
ence, for the majority of these data, is that the Collector, with 
imperfect means of determination, believed that he collected the 
plants in question somewhere between the points named. From 
subsequent explorations it appears highly improbable that many 
of them were collected at so great an altitude as 17,000, to say 
nothing of 18,000 ft. This number, fifty, as compared with the 
fifty-two species gathered between 17,000 and 18,000 ft. in Tibet, 
affords further proof that plants ascend higher in the plateaux 
LINN. JOURN.—BOTANY, VOL. XXXV. T 
