CAPRIFOLIACEAE 261 



to 1/2 inch long, which contains an oval stone flat on one side 

 and slightly convex on the other. 



Distribution. — The Blackhaw is an inhabitant of dry soil 

 from Connecticut to Michigan and southward to Georgia and 

 Texas. In Illinois, it ranges from Cook, Lake and Jo Daviess 

 counties south at least to Pope, Johnson and Union counties. 

 There are no records, however, for the lowlands and swampy 

 regions south of the Ozarks. 



VIBURNUM DENTATUM Linnaeus 

 Arrowwood 



The Arrowwood, fig. 69, is a shrub sometimes 15 feet high 

 with slender, gray branches and glabrous branchlets. The 

 leaves are ovate to nearly orbicular, acute or short-acuminate 

 at the apex, and rounded to somewhat cordate at the base. 

 The margins are closely toothed, and the leaf surface is gla- 

 brous both above and below but sometimes pubescent with 

 clusters of simple hairs in the axils of the veins on the under- 

 side. The leaves measure li/^ to 3 inches in length and ^4 to 

 1 inch in width. The leaf veins are pinnately arranged and 

 prominent on the underside of the leaf. 



The flowers, which appear in May or June, are borne in 

 long-stalked cymes 2 to 3 inches wide, which contain no sterile 

 flowers. The fruit, which is about 14 inch in diameter, is glo- 

 bose or slightly ovoid and blue to nearly black, and contains 

 a similarly shaped stone, which is rounded on one side and 

 deeply grooved on the opposite face. 



Distribution. — The Arrowwood ranges in moist soils from 

 New Brunswick to Ontario and Minnesota and southward 

 into Georgia. Although Illinois lies to the west of its normal 

 range, specimens referable to it have been taken at Starved 

 Rock, Salem in Marion County, Olney and Parkersburg in 

 Richland County, Carbondale in Jackson County, Rush Town- 

 ship in Jo Daviess County, and in Alexander County. 



VIBURNUM AFFINE Bush 



Missouri Viburnum 



The Missouri Viburnum, fig. 69, is an erect shrub 3 to 5 

 feet tall with a bushy top made up of smooth or, rarely, 



