
          56354. QUERCUS sp. Oak. From Yunnan, China. Collected by J. F. Rock, 
Agricultural Explorer. A tall tree, 70 to 80 feet high, with a straight 
trunk 3 to 4 feet thick. The acorns are inclosed in conical involucres, 
and are borne in stout, densely packed spikes. The tree, which occurs 
in Yunnan at elevations of 7,000 to 8,000 feet, should be tested as an 
ornamental in the South Atlantic and Gulf Coast States and the mild 
coast regions of California.

50519. RHUS POTANINI. Sumach. From Honan, China. Collected by Joseph 
Hers and presented by Prof. C. S. Sargent, Director of the Arnold Arboretum, 
Jamaica Plain, Mass. A handsome shrub or small tree, reaching about 
25 feet in height, remarkable for the brilliant autumn coloring of its 
pinnate foliage. It has proved hardy as far north as Massachusetts.

44426. ROSA ODORATA. Rose. From Pautingfu, Chihli Province, China. 
Collected by Frank N. Meyer, Agricultural Explorer. A remarkably 
vigorous rose with small, double white flowers having pink centers. 
Although attractive as an ornamental plant, it is useful principally 
as a stock on which to graft or bud other varieties. It is not entirely 
hardy in the northern parts of this country, but in those regions it 
may be used as a stock for roses under glass. Amateur rose-growers 
elsewhere will find it an easily grown and practically universal stock 
for propagating variety collections.

46002. ROSA sp. Rose. From Hupeh, China. Collected by Frank N. Meyer, 
Agricultural Explorer. A shrubby rose which sends up many stems. It has 
small foliage and bears single, medium-sized flowers of soft pink. It 
thrives in stiff, clay soil, resisting great humidity and high temperatures. 
This species was obtained from the gardens of a Roman Catholic convent at 
Ichang. It has shown promise as a stock, and is well worthy of trial for 
this purpose.

56017. ROSA sp. Rose. From Yunnan, China. Collected by J. F. Rock, 
Agricultural Explorer. A scrambling shrub or climber, 25 feet high with 
a spread of 30 feet or more. The flowers, which are about an inch and 
a half across, when first open are yellow, and later become cream-colored. 
The orange-red fruits are borne in large, ample, compound clusters. Tender; 
will not withstand severe frost.

57226. RUBUS MACRAEI. Akala. From Hilo, Hawaii. Presented by L. W. 
Bryan, Hawaiian Sugar Planters Association. A remarkable wild rubus 
from the Hawaiian Islands, interesting to plant breeders but probably 
not suitable for outdoor cultivation in this country, unless it may 
be in some of the moist, nearly frost-free spots along the California 
coast. The plant forms a large bush, with the older branches thornless. 
The fruits, which are borne at the drooping tips of the branchlets, 
are about 2 inches in diameter, and exceedingly juicy; the seeds are 
comparatively small. The flesh is slightly bitter, but otherwise  
delicious. Preliminary tests at the Plant Introduction Garden, Bell, Md., 
show that the plant is difficult to handle under greenhouse conditions; 
it requires an acid soil, and an abundance of shade and moisture. The 
variety represented by this number has red fruit.

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