92 PLANTAE CHINENSES FORRESTIANAE 
19501. Vaccinium oreotrephes, W. W. Sm. Duplicate of 
1917. Shrub of 6-18 inches. Flowers rose or white 
flushed rose. Open, moist, peaty, stony pasture or 
on rocks on the Mekong-Salwin divide. Lat. 27° 54’ 
N. Long. 98? 50’ E. Alt. 13-14,000 ft. June 1921. 
N.W. Yunnan. 
19504. Actinidia callosa, Lindl. Scandent shrub of 6-10 ft. 
Flowers pale crimson, margined creamy-white. On 
scrub in side valleys on the Mekong-Salwin divide. 
Lat 28° N. Long. 98° 50’ E. Alt. 8-9,000 ft. June 
1921. N.W. Yunnan. 
19505. Betula utilis, D. Don, var. Tree of 30-50 ft. Bark 
red (!). In mixed forests in side valleys on the 
Mekong-Salwin divide. Lat. 28° N. Long. 98° 50’ 
EK. Alt. 9-10,000 ft. June 1921. N.W. Yunnan. 
19506. Pyrus Vilmorini (Schneider). Shrub of 20 ft. In 
immature fruit. Mixed thickets, rocky situations in 
ravines on the Mekong-Salwin divide. Lat. 28° N. 
Long. 98° 50’ E. Alt. 910,000 ft.. June 1921. N. 
W. Yunnan. 
19507. Machilus. Shrub of 15-30 ft. Foliage and bark faintly 
aromatic. Flowers olive-brown. ‘Thickets in ravines 
on the Mekong-Salwin divide. Lat. 28° N. Long. 
98° 50’ E. Alt. 9,000 ft. June 1921. N.W. Yunnan. 
19508. Senecio acerifolius, C. Winkl. Surculose plant of 
2-2% ft. Flowers orange-yellow. Moist pasture by 
streams in side valleys on the Mekong-Salwin divide. 
Lat. 28° N. Long. 98° 50! KE. Alt. 10,000 ft. June 
1921. N.W. Yunnan, 
19509. Lonicera_ trichosantha, Bur. et Franch. Erect 
branched shrub of 9-18 ft. Flowers pale golden- 
yellow, non-fragrant. Thickets by streams in side 
valleys on the Mekong-Salwin divide. Lat. 28° N. 
Long. 98° 50’ E. Alt. 9,000 ft. June 1921. N.W. 
Yunnan. 
19510. Pyrus Vilmorini (Schneider). Shrub of 10-20 ft. 
Flowers (?) probably crimson. Open, shady situa- 
tions on bouldery slopes on the Mekong-Salwin divide. 
Lat. 28° N. Long. 98° 50’ E. Alt. 10,000 ft. June 
1921. N.W. Yunnan. 
