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



Description: Flowers; double (13-15 petals), expanding buds 

 purplish red, open greenish white with occasional traces of 

 purplish red, approx. 3.8 cm. across. Fruit; orange, approx. 1.2 

 cm. in diam. 



Locations: (P), (Q). 



M. sieboldii var. zumi (Mat sum.) Asami (42) 



Matsumura in Bot. Mag. Tokyo 12: 1 (1899) as Pirns (mains) 

 zumi. Asami, The Crab-apples and Nectarines of Japan, p. 41, fig. 

 41-46, 48, pi. 22, 23, 42d-f (1927). Illus: Sargent, Trees and 

 Shrubs, v. 1, pi. 91 (1905) as Ml zumi (M. baccata var. mand- 

 shurica X sieboldii) Rehd. ; Schneider, 111. Handb. Laubh. 1 :722, 

 723 (1906) as M. zumi Rehd.; Asami (loc. cit.). Syns: Mains X 

 zumi Rehd. ; Pyrus toringo v. integri folia Franchet & Savatier ; 

 Mains toringo a. integrifolia Zabel ex Dippel; Pirns (mains) zumi 

 Matsum. ; Mains baccata var. mandshurica f . zumi Matsum. 



Introd. into U.S.A. by the Arnold Arboretum from seed collected 

 in 1892 by C. S. Sargent in Japan. Habitat: Island of Honshu, 

 Japan (rare). 



Locations: (B), (C), (J). 



Progeny of M. sieboldii var. zumi: 

 M. cv. Professor Sprenger* (Doorenbos) 

 M. cv. Winter Gold* (Doorenbos) 



M. sieboldii var. zumi cv. Calocarpa 



Illus: Bull. Pop. Inform. Morton Arboretum, x. 44 (1935). — 

 Hab. as M. zumi X calocarpa Rehd. Syns : M . X zumi var. calocarpa 

 (Rehd.); Mains sieboldii var. calocarpa Rehd.; Pyrus sieboldii 

 var. calocarpa Bailey. 



Introd. into U.S.A. by the Arnold Arboretum from seed sent 

 from Japan, in 1890, by William S. Bigelow. 



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

 white to pinkish white, approx. 3.5 cm. across. Fruit; red, lighter 

 on shaded side, approx. 1 cm. in diam. 



Locations: (A), (B), (C), (J). 



Progeny of M. sieboldii var. zumi cv. Calocarpa: 

 M. cv. Golden Hornet* (Waterer) 



M. X sublobata (Dipp.) Rehd. 



M. pruni folia X M. sieboldii. 



Dippel, Handb. Laubh. 3: 400 (1893) as Mains ringo a. sub- 

 lobata. Rehder in Jour. Arnold Arb. 2: 56 (1920) as Mains X 

 sublobata. Illus: N.Y. Agr. Expt. Sta. Tech. Bull. 214, fig. 7. 



