1843 
55941. prunus sp. Plum. "(No. 6117. August 26, 1922.) A wild 
plum tree about 20 feet high, which grows along banks of streams in the 
Likiang plain at altitudes of 9,500 to 10,000 feet. The round, lemon- 
yellow fruits are about an inch in diameter. The tree is a prolific 
bearer and grows in alkaline soil." 
pyracantha spp. (Malaceae) , 55996 and 55997. Fire-thorn. From 
Yunnan, China. Seeds collected by J. F. Rock, Agricultural Explorer 
of the Bureau of Plant Industry. Quoted notes by Mr. Rock. 
55996. pyracantha sp. "(Likiang. September 11, 1922.) A shapely 
shrub 10 to 15 feet in height, which grows along stream beds in lime- 
stone soil throughout the Likiang plain. It is common all along the 
road from Talifu to Likiang, and even south of Likiang. When in flower 
it is very ornamental, but it is especially attractive when loaded 
with its bright scarlet fruits from August until winter." 
55997. pyracantha sp. "(No. 6527. September 14, 1922.) A 
dense shrub 6 to 8 feet in height, which grows with Primepia utilis in 
arid situations in the valley beyond Lashipa, two days' journey south 
of Likiang. It has bright yellow berries instead of the scarlet fruits 
which are so common." 
PYRUS spp. (Malaceae), Pear. 55998, 56000, 56003 to 56005. From 
Yunnan, China. Seeds collected by J. F, Rock, Agricultural Explorer of 
the Bureau of Plant Industry. Quoted notes by Mr. Rock. 
55998. PYRUS sp. "(No. 6503. Lashipa. September 13 to 14, 1922.) 
A very hardy pear tree 15 to 20 feet high, found on the Lashipa plain, 
one day's travel south of Likiang, at an altitude of 10,000 feet. It 
has very tough branches and small, oval-oblong, crenate, acute leaves, 
and bears large numbers of fruits which are the size of small marbles, 
yellow, acrid, and unpalatable. The tree is generally used by the 
natives as a stock plant. Wherever the tree grows wild they cut the 
trunk down two feet from the ground and bud cultivated varieties of 
pears on it. The tree ie exceedingly hardy and drought resistant, and 
also can withstand being inundated." 
56Q00. PYRUS sp. "(No. 6509. September 13, 1922.) A wild pear 
tree 20 feet high found on the Likiang plain near the village of La- 
sadje. The leaves do not have red veins and petioles, and the fruits, 
smaller than a marble, are yellow, spotted, and acrid but perfectly 
black and sweet when ripe. This is a very good stock plant." 
56003. PYRUS sp. "(No. 6553. September 15, 1922.) A wild pear 
tree 40 feet high, found in arid regions in the mountains west of Teng- 
chuan, 2 days' journey north of Talifu, at an altitude of 6,500 to 
7,000 feet. The branches are long and mostly horizontal. The fruits 
are much larger than those of the other wild pears , with a rich yellow- 
ish brown skin and firm butter-yellow flesh which is acrid and unpalat- 
