SYMPHORICARPOS 



191 



4-6 mm. across when fresh, withering but persisting into winter. 

 Thickets, Florida to Texas and Mexico, north to Pennsylvania, 

 Illinois, Minnesota, South Dakota, and Colorado; spread from 

 cultivation northeastwards (Fig. 300 ). 



VIBURNUM L. 



(Caprifoliaceae) 



Deciduous shrubs or small trees. Twigs moderate, slender, 

 obscurely 6-sided; pith moderate, continuous. Buds solitary or 

 superposed, mostly stalked, ovoid or oblong. Leaf-scars opposite, 

 crescent-shaped or broad, often meeting or connected by lines; 

 bundle-traces 3; stipule-scars none. Drupes present in winter. 



a. Leaf-scars quite broad; twigs 



purple, stellate-scurfy 

 a. Leaf-scars narrow; twigs 



brown or gray 



b. Bud -scales 2, closely valvate 



c. Buds ovoid-globose, green 

 c. Buds oblong, brown- scurfy 

 or lead-colored 



1. V. alnifolium 



10. V. trilobum 



d. Branches numerous, often 

 short and rigidly spreading 



d. Branches elongate, fewer, 

 flexuous 



5. V. prunifolium 



e. Buds smooth, lead -colored 4.V. lentago 

 e. Buds brown, scurfy """ — 



2. V. cassinoides 



3. V, nudum 



f. Twigs dull 

 f. Twigs glossy 



b. Bud -scales more than 2, the 

 lower pair mostly short 



c. Twigs not stellate-pubescent 



d. Bud-scales 4, buds appressed 



e. Lower bud-scales very short; 



twigs pubescent 9, V. acerifolium 



e. Lower scales often half as 



long as the bud; twigs 



glabrous 8. V. recognitimi 



