COLLECTED IN CENTRAL TIBET. 131 
Mr. Woopvitte Rockutiry’s Centrat Trper Pants. 
Collected in 1892. 
Sryce the foregoing paper on Dr. Thorold’s Tibet plants and 
Captain Picot’s Kuen-lun plants was read, the Kew Herbarium 
has been enriched, through the kindness of Professor C. S. 
Sargent, Director of the Arnold Arboretum, Harvard University, 
U.S.A., by the collection of dried plants made by Mr. W. W. 
Rockhill on his last journey in Tibet, in 1892. It is unnecessary 
to say much concerning this gentleman’s travels in China, Mon- 
golia, and Tibet. His first journey is described and illustrated 
in his ‘Land of the Lamas,’ published in 1891; and his last 
journey, on which the plants enumerated below were collected, 
is the subject of a work already, I believe, in the printer’s hands. 
It will be remembered that Mr. Rockhill was last year (1893) 
awarded the Patron’s cr Victoria Medal of the Royal Geographical 
Society. I had prepared a brief outline of Mr. Rockhill’s route 
from a condensed report of his account of his journey read 
before the Royal Geographical Society in March of the past 
year; but on the very day of going to press I have received a 
prefatory note from him, which is much more to the purpose, 
aud may follow here :— 
“The object I had in view when making the little collection 
of plants, which, through Professor Ch. S. Sargent’s kindness, 
has been examined and classified by Mr. Hemsley, of the Royal 
Gardens at Kew, was to give some idea of the flora of the 
country between the Kuen-lun range to the north and the in- 
habited regions of Tibet adjacent to the Tengri Nor on the south. 
This region has an average altitude of 15,000 feet above sea- 
level along the route followed by me in 1892, and had not, prior 
to my visit, been explored. 
“The route followed in 1879 by Col. Przewalsky, when tra- 
velling towards Lhasa, which was nearly parallel to the last that 
I took, differed considerably as regards the configuration of the 
country from mine; and consequently I anticipated that notable 
differences in the flora along the two roads would be discovered. 
“T traversed this country in the months of May, June, July, 
and part of August, and heavy snowstorms and nearly daily 
frosts occurred during this period, though the thermometer rose 
more than once to 70° F., and even 83° on one occasion in the 
shade at 2 p.m. The mean temperature from the 17th of May, 
