OCTOBER 1 TO DECEMBER 31, 1^20. 63 



51872 to 51885— Continued. 



of hand or cooked. The trees form dense thickets in nortlieru Texas, 

 eastern Oklahoniii, and parts of Missouri. A rohust form is hardy in 

 central Xew York. (Adapted from Hcdvick, Plums of New York, p. 80.) 



51882. Pbunus eevekchonh Saryent. Aniygdalacea'. Plum. 

 Seeds of a shrub sometimes 4 meters liigh, usually much smaller, 



growing in small thickets, with erect stems and slender glabrous branch- 

 lets, light orange-brown at first, bright chestnut brown, and very lus- 

 trous and marked by small orbicular white lenticels during the.r first 

 year, becoming dull reddish brown the following season. When its 

 branches are covered by its crowded clusters of white llowers 1.2 centi- 

 meters in diameter, set off by tlie green of the young leaves, the plant 

 is a beautiful object and may become a valuable addition to the list 

 of early garden shrutSs. When the leaves unfold they are slightly hairy 

 above and coated below with long matted pale hairs and at maturity 

 are thin, yellow-green, and mostly glabrous, 4.5 to 8 centimeters long 

 and 2 to 2.5 centimeters wide. The subglobose, red or amler fruit, 

 1.5 to l.S centimeters in dameter, has a th.ck skin and thin acid llesh, 

 (Adapted from Sai-tjent, Trees mid Shrubs, vol. 2, p. 158.) 



51883. Pyrus betulaefolia Bunge. Malacese. Pear. 

 Seeds of a tall, very handsome tree from northern China, with crowded 



clusters of rather small flowers which are followed by globose fruits 

 not much larger than peas. The tree is very hardy, vigorous, and fast 

 growing. (Adapted from Arnold Arboretum Bulletin of Popular Infor- 

 mation, No. 21.) 



For previous introduction, see S. P. I. No. 45S22. 



51884. Pyrus nivalis .Jacq. Malacere. Pear. 

 Seeds of a small tree of sturdy habit, with its young shoots thickly 



covered w.th a white wool. The oval, entire leaves are 2 to 3 inches 

 long. The pure white flowers, H inches across, are produced in con- 

 spicuous clusters. The roundish, yellow-green fruit is 1^ inches or 

 more in diameter. The tree is native to eastern Europe and Asia Minor, 

 where it is sometimes more than 50 feet high. It is a very beautiful 

 tree early in the season, owing to the pure-white shoots and abun- 

 dant flowers. The tree is cultivated in France for its fruit, which 

 is not eaten until bletted. (Adapted from Bean, Trees and Shrubs 

 Hardy in the British Isles, vol. 2, p. 289.) 

 For previous introduction, see S. P. I. No. 42797. 



51885. Py^eus salicifolia Pall. Malacefe. Willow-leaved pear. 

 Seeds of the handsome, willow-leaved pear, native to the eastern 



Mediterranean region, to various parts of southern Russia, and as far 

 north as Siberia. The round-headed tree is 20 to 25 feet high, has a 

 short stout trunk, and bears beautiful willowlike grayish to silvery leaves 

 1 to 3 inches long and scarcely more than half an inch wide. The dense 

 corymbs of white flowers are borne freely in April. (Adapted from 

 Gardening Illustrated, vol. 3^, p. 305.) 



51886 and 51887. Citrus spp. Rutaceae. 



From Tripoli, Libia, Africa. Budwood presented by Dr. O. Fenzi, director. 

 Stabilimento Orticolo Libico. Received December 18, 1920. Quoted 

 notes by Doctor Fenzi. 



51886. Citrus nobilisdeliciosa (Ten.) Swingle. Mandarin orang'e. 

 " Giant early mandarin. A mandarin of extra superior quality, ripen- 

 ing as early as the end of October, with an extra large fruit, well filled, 

 and with thin skin ; the pulp is very juicy, sweet, and aromatic." 



51887. Citrus sinensis (L.) Osbeck. Orange. 

 "Lim dem (Tripoli blood orange), consideretl the very best in its 



section. It is generally seedless, oval in shape, with nearly brick-colored 

 skin. Some years ago a small export was made to Hamburg and realized 

 higher prices than any of the best Spanish or California varieties." 



