Viburnum 



Caprifoliaceae 



883 



" 5o 



Map 1938 



Viburnum rufidulum Raf 



50 



Map 1940 



Viburnum affine 

 var hypomalacum Blake 



In 1923, I measured a specimen in the Clarence Tumm woods 7 miles 

 east of Michigan City that was 16.5 inches in circumference at 40 inches 

 above the ground, and was 20 feet high. 



Que. to Man., southw. to N. J., Ind., Kans., and Colo. ; in the mts. to Ga. 



5. Viburnum prunifolium L. Blackhaw. Map 1937. This species, no 

 doubt, was native in every county of the state. More or less frequent in 

 moist woods throughout the state, except in the hilly counties where it 

 becomes more or less rare, and its place is taken by Viburnum rufidulum. 



Conn, to Iowa, southw. to Ga. and Tex. 



6. Viburnum rufidulum Raf. Southern Blackhaw. Map 1938. Re- 

 stricted to the southern part of the state and possibly not extending far 

 beyond the area indicated on the map. All of our specimens are from the 

 slopes of rocky, wooded ravines. 



N. J., Ind., Mo., and Kans., southw. to Fla. and Tex. 



7. Viburnum affine Bush. (Viburnum pubescens (Ait.) Pursh, in part, 

 of Gray, Man., ed. 7 and Britton and Brown, Illus. Flora, ed. 2.) Missouri 

 Viburnum. Map 1939. In clay soil on white oak slopes and their bases, 

 in sandy soil on the crests and slopes of wooded ridges, and in moist places 

 at their bases. All of our specimens and reports are from Marion County 

 and northward. 



Ind. to Minn, and Mo. 



7a. Virburnum affine var. hypomalacum Blake. (Rhodora 20: 14. 1918.) 

 (Viburnum pubescens (Ait.) Pursh, in part, of Gray, Man., ed. 7 and Brit- 

 ton and Brown, Illus. Flora, ed. 2.) Map 1940. Usually in dry clay or sandy 

 soil on wooded slopes and restricted to the lake area. 



Que. to Man., southw. to Ga. and 111. 



8. Viburnum molle Michx. Kentucky Viburnum. May 1941. Very 

 local. On gravelly or rocky, wooded slopes, usually bordering streams. 



Ind. to Iowa, southw. to Ky. and Mo. 



