262 CAPRIFOLIACEAE 



minutely pubescent branches and branchlets. The leaves are 

 ovate to broadly ovate, II/2 to 3 inches long by ^ to 2i4 

 inches wide, usually long pointed at the apex, narrowed to 

 somewhat cordate at the base, and coarsely and irregularly 

 toothed on the margin with 4 to 9 teeth to a side. The leaf 

 blade is smooth above and beneath, except for the pubescence 

 on the veins and in the axils. The petioles are commonly 

 quite short, usually less than ^4 i^^ch long. 



The flowers, which appear from late May on into June, 

 are borne in cymes, U/i to 2 inches wide, more or less covered 

 with reddish glands. There may be as many as 7 sterile flowers 

 per cyme. The fruit, which matures in September, is black, not 

 bloom covered, and is a little more than 14 inch long. It con- 

 tains a similarly shaped stone with a short central groove and 

 2 faint marginal ones on one surface and on the opposite surface 

 a central ridge and 2 grooves. 



Distribution. — The Missouri Viburnum, which prefers dry, 

 sandy, or clay soils in wooded regions, ranges from Ohio to 

 Minnesota and southward into Missouri. In Illinois, it is 

 reported only from northern parts of the state, including Kanka- 

 kee, Lake, Peoria, Cook and Winnebago counties. A variety, 

 hypomalacum Blake, differing in having the petioles and both 

 surfaces of the leaves pubescent all over, occurs in Lake, Cook 

 and McHenry counties. This species has been assigned, as 

 var. affijie (Bush ex Schneider) House, to V. Rafinesquianum 

 Schultes, the species then being, by the reversal, synonymous 

 with var. hypomalacum. 



VIBURNUM MOLLE Michaux 



Soft-Leaved Arrowwood Kentucky Viburnum 



The Soft-Leaved Arrowwood, fig. 70, is an erect shrub 4 to 

 10 feet high with characteristic bark which exfoliates like that 

 of a birch tree, leaving a smooth, reddish-brown under-bark. 

 The branches and branchlets are gray and smooth, although 

 young branches are more or* less covered with short glands 

 w-hen they first appear. The leaves, which bear filiform stipules 

 on the petioles, are ovate to nearly circular, mostly 3 to 5 inches 

 long by 2 to 4 inches wide, abruptly acute or acuminate at the 

 apex, cordate at the base, coarsely dentate on the margins, dark 

 green and smooth above, and yellow green beneath. The entire 



