JANUARY 1 TO MARCH 31, 1918. 27 



45820 to 45838— Continued. 



at various times during the past and often described. It should be 

 tested for blight resistance and as a stock for pears." 



45821. Pyrus BETUT.AEroLrA X PHAEOCARPA. Malaccfe. Pear. 

 "No. 61. Seeds obtained from wild trees at Hsia Ying and Panshan, 



China. Tliis species produces an abundance of small brown fruit about 

 as large as good-sized peas and of very poor flavor. The trees are very 

 vigorous and attain a height of 50 feet and a trunk diameter of 20 to 

 30 inches. More often, however, it is a tree from 30 to 40 feet high, 

 with a trunk about 1 foot in diameter. It is a widely distributed species, 

 and I found it from extreme northern China to the Yangtze River. This 

 species is certainly a marvel in its ability to adapt itself to all scirts 

 of conditions. It is common on dry hillsides, on the plains, along edges 

 of ponds, and I often saw it growing well in ponds where the water 

 around the tree, for at least a large part of the year, was a foot deep. 

 It is used extensively throughout northern and eastern China as a stock 

 for all their cultivated varieties and seems to be admirably suited for 

 this purpose. What a pity that this species is so susceptible to pear- 

 blight! Where root-blight is not troublesome this should prove a valu- 

 able pear stock in this country." 



45822. Pyrus betulaefolia Bunge. Malaceos. Pear. 

 " No. 66. From Kingmen, Hupeh Province, China. These seeds were 



collected from typical trees of this species growing near trees of Pyrus 

 calleryana. A careful study will be made of the seedling to determine 

 whether or not these two species have hybridized. The trees are very 

 vigorous and often attain very large size in this region." 



45823 to 45828. Pykus calleryana Decaisne. Malace?e. Pear. 



45823. " No. 18. Collected at Hadzmura, Ise Province, Japan. Tree 

 30 feet high with a trunk 12 inches in diameter, growing along 

 the edge of a rice field about a foot above an irrigation ditch. A 

 very vigorous specimen and bearing large quantities of small fruit." 



45824. " No. 24. Collected near the village of Kono, Ise Province, 

 Japan. About 50 trees growing on a mountain side. These trees 

 were small, looking more like large bushes than trees, being only 

 3 to 8 feet high and with trunks from 1 to 5 inches in diameter. 

 They had evidently been cut off for fuel, which accounted for their 

 small size. The trees were loaded with small brown fruits from 

 one-fourth to half an inch in diameter." 



45825. "No. 30. Collected 5 miles south of Suigen, Chosen (Korea), 

 in the Kwasan Mountains. These were the largest trees of this 

 species that I saw in Korea, being 15 feet tall and from 5 to 6 

 inches in diameter. They are of especial interest and value, be- 

 cause central Chosen is the northern limit of this species, and the 

 winters are quite cold ; hence, these trees may prove considerably 

 hardier than those from central China and southern Japan; and, 

 if so, can be used as a stock in colder regions in this country." 



45826. "No. 31. Collected 2 miles west of Suigen, Chosen. This 

 is the type which has been named Pyrus faurei by Schneider. It 

 is very similar to P. calleryana, but the trees and leaves are 

 usually much smaller. I regard this as simply a dwarf form of 

 P. calleryana, the dwarf habit being due to the fact that this is 



