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



cv. Guiding Star* 



A chance seedling of unknown parentage. 



Discovered and named by Arie F. den Boer of Des Moines, 

 Iowa. Formerly den Boer sdlg. 54-1. Introd. into cultivation in 

 1963 by Wayside Gardens, Mentor, Ohio. 



Description: Flowers; double (14-18 petals), expanding buds 

 rose pink, open white, approx. 5.5 cm. across. Fruit; yellow with 

 red cheek, approx. 1.5 cm. in diam. 



Locations: (A), (N). 



cv. Helen* 



M. baccata — 



cv. Jay Darling 1 



r. — I 



] 



M. pumila var. niedzwetzkyana—* \ = cv. Helen" 



Unknown - 



An open pollinated seedling selected at the Des Moines Water 

 Works, Des Moines, Iowa, in 1939 by Arie den Boer. Named in 

 1951 and introd. by den Boer. 



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

 approx. 4.5 cm. across. Fruit; purplish red, approx. 2 cm. in diam. 



Locations: (A), (C). 



cv. Henrietta Crosby 



M. baccata , 



\M. X atmoldiana* ■ 



M. floribunda—1 = cv. Henrietta Crosby 



M. pumila var. niedzwetzkyana—* 



Originated from a cross made in 1939 by Karl Sax of the 

 Arnold Arboretum and introd. in 1947. Formerly A.A. 19039. 

 Named for Mrs. S. V. R. (Henrietta) Crosby of Manchester, Mass. 



Description: Flowers; single, pink, approx. 4.5 cm. across. Fruit; 

 dark red, approx. 2.5 cm. in diam. 



Locations: (A), (B), (C), (D), (E), (L), (0). 



cv. Henry F. DuPont* 



See the genealogical scheme showing the probable parental 

 relationships for cv. Henry F. DuPont* on page 71. 



An open pollinated seedling selected in 1946 by Karl Sax of the 

 Arnold Arboretum. Named for Henry F. DuPont of Winterthur, 

 Del. Syn : M. cv. Henry DuPont. 



Description: Flowers; single and semidouble (5-10 petals), 

 expanding buds purplish red to deep rose red, open light purplish 

 pink fading to pale magenta, approx. 4.3 cm. across. Fruit; 

 brownish red, approx. 1.4 cm. in diam. 



Locations: (A), (B), (C), (N), (0), (P), (S). 



