24 NATL. ARBORETUM CONTRIB. NO. 2, U.S. DEPT. AGR. 



Location: (A). 



M. tschonoskii (Maxim.) Schneid. 



Maximowicz in Bull. Acad. Sci. St. Petersb. 19: 169 (in Mel. 

 Biol. 9: 165) (1873) as Pirns tschonoskii. Schneider in Fedde 

 Repert. 3: 179 (Dec. 1906). Illus: Jour. Jap. Bot. viii. 140 (1932). 

 Syns: Eriolobus tschonoskii Rehd. ; Cormus tschonoskii (Maxim.) 

 Koid. ; Docyniopsis tschonoskii Koid. ; Macromeles tschonoskii 

 (Maxim.) Koid. 



Introd. by the Arnold Arboretum from seed collected in 1892 by 

 C. S. Sargent in Nikko, Central Honshu, Japan. Habitat: Honshu, 

 Japan (rare). 



Location: (C). 



M. yunnanensis (Franch.) Schneid. 



Franchet, PI. Delavay. 228 [1890] as Pyrus yunnanensis. 

 Schneider in Fedde. Repert. 3: 179 (Dec. 1906). Syns: Eriolobus 

 yunnanensis (Franch.) Schneider; Cormus yunnanensis (Franch.) 

 Koid., Docyniopsis yunnanensis (Franch.) Koid. 



Discovered by Pierre Delavay in Yunnan, China. Introd. into 

 U.S.A. by the Arnold Arboretum in 1909 through seed collected 

 by E. H. Wilson in Ching-chi Hsien, China. Habitat: Hupeh, 

 Szechwan, and Yunnan, China. Disease free (41). 



Locations: (C), (J). 



Section B: 

 Cuhivars 10 



cv. Adam* 



A seedling, probably of M. baccata, discovered in 1930 at 

 Boughen Nurseries, Valley River, Manitoba, Canada, and introd. 

 about 1935. 



Description: Flowers; single, expanding buds rose red, open 

 white, approx. 4.2 cm. across. 



Locations: (I), (E). 



10 For origin and parentage of some selected cultivars, see "Notes Con- 

 cerning Some Selected Crabapple Cultivars," p. 6, and "Notes Concerning 

 Some Selected Apple Cultivars," p. 7. 



