114 



TREES OF THE NORTHERN UNITED STATES 



1. Viburnum 6pulus, L. (CRANBERRY-TREE.) Leaves palmately 

 veined and strongly 3-lobed, broadly wedge-shaped or truncate at 



base, the spreading lobes mostly toothed 

 on the sides and entire in the notches ; 

 petiole with 2 glands at the apex. Fruit 

 in peduncled clusters, light red and quite 

 sour (whence the name "Cranberry-tree"). 

 A nearly smooth, small tree or shrub, 4 to 

 12 ft. high; wild along streams, and culti- 

 vated under the name of Snowball-tree or 

 Guelder Eose. In this variety the flowers 

 have all become sterile and enlarged. Vi- 

 burnum acerifolium (ARROW-WOOD) has 

 also lobed leaves, and is much more com- 

 mon. This species never forms a tree, and 

 v. Opuius. has dark-colored berries. 



2. Viburnum dentatum, L. (ARROW- 

 WOOD.) Leaves, pale green, broadly ovate, 

 somewhat heart-shaped at base, coarsely and 

 sharply dentated, strongly veined and of- 

 ten with hairy tufts in the axils ; petioles 

 rather. long and slender. Fruit J^ in. long, 

 in peduncled clusters, blue or purple ; a cross- 

 section of the stone between kidney- and 



horseshoe-shaped. 



V. dent&tum. 



A shrub or small tree, 5 to 15 ft. high, 

 with ash-colored bark ; in wet places. 



3. Viburnum Lentago, L. (SWEET 

 VIBURNUM OR SHEEP-BERRY.) Leaves 

 broad, ovate, long-pointed, 2 to 3 in. long, 

 closely and sharply serrated ; petioles 

 long and with narrow, curled margins; 



entire plant smooth. Fruit in sessile 



clusters of 3 to 5 rays, oval, large, y z in. 



long, blue-black, edible, sweet; ripe in 



autumn. A small tree, 10 to 30 ft. high ; 



found wild throughout, in woods and 



along streams. 



4. Viburnum prunifolium, L. (BLACK 

 HAW.) Leaves oval, obtuse or slightly v. 



pointed, 1 to 2 in. long, finely and sharply serrated. Blooming early, 



