OF ALPLNE PLANTS LN THE CAUCASUS. 267 
dagh, on 4/16 August, 1874: it was 16-20 em. [62-8 in.] high. 
Boiss. Fl. Orient. i. 240, cites it from a similar altitude. 
*PSEUDOVESICARIA DIGITATA, C. A. Mey. Another of the 
extreme alpine forms, which penetrates to the extreme highest 
points, where the snow melts. Ruprecht, Fl, Cauc. p. 97, says :— 
“In monte Djultidagh ad moles glaciales alt. 1690 hex. 20 
Jul. fruct. et flor. pallide roseo-lilacinis ; ibidem alt. 1840 hex. 
[11,700 ft.] specimen pollicare albiflorum legi...” I obtained 
this species from the Kurwa Pass at 11,200 ft., on 26 June/8 
July, 1885, flowering freely, and with only the first rudiments of 
fruits; the tiny plants were from 5 to 10 em. [2-4 in.] high: 
from the southern declivity of Kwawlos-mta, 10/22 July, 1876, 
in fruit 12-17 cm. [5-62 in.] higa, with a simple root of the same 
length, whose tender lateral brauches clung to the sharp frag- 
ments of slate. From Kerigo, 11,000 ft., 8/20 July, 1876, 5-10 
em. [2-4 in.] high, only in flower. Also received from Ruprecht, 
from Bogos, Tindal, Djulti-dagh, 14,000 ft., 19/31 July, 1860, in 
ripe fruit: from the upper regions of Tusch, 4/16 August, 1861, 
7 cm. [2i in.) high, in flower and fruit. Bayern collected it at 
Bogos in 1860 and Azuntabl. 
ÅLYSSUM ALPESTRE, Linn. var. typ. Trautv., I gathered at 
Schah-dagh on 27 June/9 July, 1885, above 11,000 ft. 
Of the genus DraBa, which is comparatively well represented, 
the undermentioned species are alpine. 
*DnABA BRUNLEFOLIA, Stev. I have records of eighteen 
stations for this little plant in the Caucasus. The specimens in 
question show, besides their individual variation, the height at 
which they were gathered in a suflicient degree. My specimens 
from the highest station were from Sawalan at 12,300 ft., are 
about 2 em. [1 in.] high, and in full flower, on the 20 June/2 July, 
1871; and the same holds good with those from Biugöl-dagh at 
11,000 ft., on 4/16 August, 1874. At 7000—9000 ft. the plant is 
7-9 em. [23-32 in.], with leaves three or four times longer, and 
almost entirely glabrous. Ruprecht gives the maximum height 
at 11,500 ft. 
DRABA SCABRA, C. A. Mey.  Ascends on the northern side of 
Elbruz to about 11,000 ft. ; 10/22 August, 1865. Ruprecht, FI. 
Caue. p. 107, gives its highest elevation at 10,600 ft. 
