JANUARY 1 TO MARCH 31, 1921. 29 



52451 to 52460— Continued. 



some, tall-growing shrub causes it to be extensively used for shrub- 

 bery plantings. (Adapted from The Florists' Exchan^ge, vol. 38, 

 p. 15.) 



52457. Philadelphus serxcanthus Kuehne. Chinese mock orange. 

 A bush 3 meters high, with inflorescences of 7 to 11 white flowers, 

 native to thickets at altitudes of 1,300 meters in western Szechwan. 

 The bark of 2-yeai--old twigs is nut brown or gray. The leaf blades 

 are narrowly lanceolate, long-attenuate, with 3 to 8 or more small 

 teeth or occasionally entire. sm#oth on both sides or with appressed 

 hairs, or the underside densely white hairy on the veins. (Adapted 

 from Sargent, Plantae Wilson4(riiae, vol. 1, p. lJi5, and from Garten- 

 flora, vol. .'/o, p. 561.) 



52458. Rosa beggeriana Schrenk. Rosacete. Rose. 

 A bush 1 to 2i meters tall with evenly prickly, pinnate leaves, the 



leaflets usually 7 to 9, elUptic to oblong, smooth and deep green above, 

 generally thickly hairy and bluish green below. The inflorescences are 

 1 to nearly 50 flowered and the flowers white, cream, or more rarely 

 red. The fruits are very dark red. (Adapted from Schneider, Illus- 

 triertes Handbuch der LaubJwlzkunde, vol. 2, p. 512.) 



52459. Spiraea myktilloides Rehder. Rosacese. Spirea. 

 A graceful shrub 2 to 3 meters high and excessively spreading. 



The young branches are chestnut or fuscous brown and glabrous. The 

 numerous short spurs, densely covered with the i>ersistent fulvously 

 pubescent bud scales and bases of the petioles, give to the 2 and 3 year old 

 branches a peculiar appearance. The somewhat papery oval leaves are 

 entire, cuneate at the base, glabrous and obscurely bluish green above, paler 

 and laxly pilose beneath. The umbellate, hemispherical racemes are 

 densely many flowered and are borne at the tips of short, few-leaved 

 branches. The white flowers, 5 to 6 millimeters in diameter, are on 

 graceful pedicels 3 to 6 meters long. Native to upland thickets at altitudes 

 of 3,000 to 4,CKX) millimeters in western Szechwan. (Adapted from Sar- 

 gent, Plantae Wilsonianae, vol. 1, p. MO.) 



52460. Rhododendron chartophyllum Franch. Ericaceae. 



An evergreen bushy species with white to lavender glabrous flowers, 

 3 to 4 centimeters long, broadly funnel formed and five lobed, on 

 elongated flowering branches. The oblong or narrowly lanceolate leaves 

 are rigidly coriaceous, glaucous above and sparsely scaly below. Native 

 to Yunnan and extending from western Szech'.van to Tatsienlur (Soulie). 

 (Adapted from The Garden, vol. IS, p. 804, and from Morot, Journal de 

 Botanique, vol. 9, p. 398.) 



52461 to 52464. Pyrus spp. Malacese. Pear. 



From Arlington Farm, Va. Seedlings of Asiatic hybrid pears. Numbered 

 March, 1921. Quoted notes by J. Marion ShuU, botanical artist, Oflice of 

 Fruit-Disease Investigations, Bureau of Plant Industry. 

 "Oriental hybrid pear seedlings bred by Dr. M. B. Waite, Office of Fruit- 

 Disease Investigations, United States Department of Agriculture, for blight 

 resistance and grown at Arlington Farm." 

 23564—23 3 



