KEYS TO THE GENERA 53 



I. Leaves i inch long and sharp-pointed, evergreen. Junfperus 



(p. ;i37). 



I. Leaves much smaller. Erica (p. 254). 



* Leaves evergreen in clusters along the sides of the stem, needle- 



shaped. Pinus (p. 324), 



Key 10. Key to those deciduous bushes which have flowers during 

 the fall, winter, and spring, when the stems are bare of foliage. The 

 arrangement of the leaves is easily determined by their scars. 



* Flowers regular, not lopsided, on alternate leaved bushes. (A.) 



A. Corolla united at base. (In Daphne and Dirca this is a calyx.) 

 (B.) 

 B. Flower with tubular portion and a 4-lobed border. Daphne 



(p. 298). Dirca (p. 297). 

 B. Flower with a 5-lobed edge. (Azalea is sometimes double.) (C.) 

 C. Flowers small, white or pinkish, urn-shaped. Vaccinium 



(p. 244). 

 C. Flowers large, 1 inch, funnel-shaped. Aztilea (p. 257). 

 A. Corolla with separate petals. (Sometimes these pieces are in 

 reality calyx.) (D.) 

 D. Flowers yellow, small, in clusters, G parts. Benzoin (p. 297). 



Sassafras (p. 296). 

 D. Flowers (1 inch) with 4 slender yellow petals. Hamamelis 



(p. 202). 

 D. Flowers with 5 yellow petals. Coryldpsis (p. 204). 

 D. Flowers large. 1-0 inches, with or more thick petals. Mag- 

 nolia (p. 58). 

 D. Flowers |-1 inch with 5 white or pinkish petals (sometimes 



double). Prunus (p. 142). Spiraea (p. 140). 

 D. Flowers i-li inches with brownish petals. Asimina (p. 04). 

 D. Flowers very small, i inch, pink in clusters, with 4 or 5 petals. 

 Tamarix (p. 73). 



* Flowers irregular or lopsided, red or purplish, pea-shaped on alter- 



nate-leaved bushes. C^rcis (p. 127). 



* Flowers regular on opposite-leaved l)ushes. (E.) 



E. Flowers yellow, bell-shaped (I inch long) with 4-lobed border. 

 Forsyth ia (p. 274). 



E. Flowers yellow, small in clusters with 4 separate petals. C(5rnus 

 Mas (p. 210). 



E. Flowers large, 1 inch, yellow with a tubular corolla having 5-lobed 

 border; stem green iind 4-angled. Jasminum (p. 273). 



E. Flowers large, 1 inch, yellowish brown, with many thick sweet- 

 scented petals. Calycanthus (p. 186). 



