158 Bulletin of the Unversity of Texas 
most smooth with age. Flowers white in flat topped hairy 
cymes. Fruit a small black juicy drupe. 
Western Texas, southern California and Mexico. 
2. Sambucus canadensis L. American Elder. This spe- 
cies occurs from Nova Scotia to Manitoba, Florida west to 
Kansas and Texas. It is distinguished from the preceding 
by its smooth foliage and inflorescence. 
VIBURNUM L. 
Viburnum rudifulum Rafinesque. Black Haw. A _ small 
tree 30°-35° high with rough reddish bark and gray twigs. 
Leaves leathery, variable in form, elliptical-ovate or elliptical- 
obovate, pointed, sharply and finely serrate, dark green and 
lustrous above with numerous rusty brown hairs beneath. 
Flowers perfect in white terminal clusters. Fruit a bright 
blue drupe, 1/2’-2/3’ long, covered with a glaucous bloom. 
Virginia, Illinois, Florida, Kansas and Texas. Occasionally 
cultivated. 
