21602. 
21603. 
21604. 
21605. 
21606. 
21607. 
21608. 
21609. 
NUMERICAL CATALOGUE 273 
Prunus sp. aff. Dielsiana, Schneid. Shrub of 15-30 
ft. Flowers pale pink. In mixed thickets and forests 
on the Londre La, Mekong-Salwin divide. Lat. 28° 
14’'N: Long, 98° 40’: E.  Alt/ 10-10,500 ft. May 
1922. ‘Tsarong, S.E. Tibet. 
Prunus. Shrub of 20-35 ft. Flowers fragrant, white. 
In thickets by streams on the Yangtze-Mekong divide, 
near Da-mu-chong. Lat. 27° 18’ N. Long. 99° 48’ 
E. Alt. 9,000 ft. March 1922. N.W. Yunnan. 
Euptelea pleiosperma, Hook. f. et Thoms. Shrub ot 
20-25 ft. Flowers brown. In open thickets by 
streams and in shady moist gullies on the Yangtze- 
Mekong divide, near Da-mu-chong. Lat. 27° 18’ N. 
Long. 99° 48’ E. Alt. 9,000 ft. March 1922. 
N.W. Yunnan. 
Ulmus. Shrub of 10-25 ft. Flowers ruddy green. In 
open thickets and amongst rocks on the Yangtze- 
Mekong divide, near Da-mu-chong. Lat. 27° 18’ N. 
Long. 99° 48’ E. Alt. 10,000 ft. March 1922. N. 
W. Yunnan. 
Syringa Potaninii,Schneid. Shrub of 8-16 it. Flowers 
fragrant, pale creamy-rose. In thickets by streams 
on the Yangtze-Mekong divide, near Da-mu-chong. 
Lat. 279 18’ N. Long. 99° 48’ E. Alt. 8,000 it 
March 1922. N.W. Yunnan. 
Quercus variabilis, Blume. Shrub of 20~30 ft. Flowers 
dull yellow. In mixed thickets on dry, rocky hill- 
sides on the Yangtze-Mekong divide, near Da-mu- 
chong. Lat. 27° 18’ N. Long. 99° an Al: 
8,oo0 ft. March 1922. N.W. Yunnan. 
Populus sp. (Male flowers only). Shrub or tree of 
30-60 ft. In mixed forests on the Londre La, 
Mekong-Salwin divide. Lat. 28° 14’ N. Long. 98° 
4 _» Alt. 10-11,000 ft. May 1922. Tsarong, 
S.E: “Tibet. 
Berberis Jamesiana, Forrest et W. W. 5m. Spinous 
shrub of 6-9 ft. Branches arched. Flowers dark 
yellow. Open rocky hillsides amongst mixed scrub 
o1 the Londre La, Mekong-Salwin divide. Lat. 28° 
14! N. Long. 98° 4o’ E. Alt. 10-11,000 ft. May 
1922. Tsarong, S.E. Tibet. 
