36 KEYS TO THE GENERA 



D. Flowers waxy-white, often double ; leaves evergreen. 



Gardfenia (p. 240). 

 D. Flowers with a toothed crown in center ; leaves evergreen. 



Nferium (p. 270). 

 D. Flowers with a conspicuous colored calyx. Clerodendron 

 (p. 291). 

 B. Tube very short, flowers broadly spreading with a 5-lobed 



border. Vibrirnum (p. 219). 

 B. Flowers bell-shaped, yellow, 4-lobed, in earliest spring. 



Forsythia (p. 274). 

 B. Flowers cup-shaped with 10 stamens in dent-like poclcets, in 

 summer. Kalmia (p. 256). 

 A. Flower petals entirely separate (in Chionantlius only apparently 

 separate). (B.) 

 E. Flowers 1 inch or more in size. (F.) 

 P. Flowers yellow with many stamens. Ascyrum (p. 74) . Hy- 

 pericum (p. 77). 

 F. Flowers purplish with many thick pieces and sweet odor. 



Calycanthus (p. 186). 

 F. Flowers bright scarlet with thick elongated calyx ; fruit large. 



Punioa (p. 209). 

 F. Flowers of many colors with stalked and wrinkled jjctals. 



Lagerstrcfemia (p. 209). 

 F. Flowers white (sometimes purplish ; often with a dark center 

 in Clstus). (G.) 

 G. Petals 5 (rarely 4) ; stamens many ; leaves generally 

 aromatic. (H.) 

 H. Fruit dry pods; flowers large and rose-like. Cistus 



(p. 71). 

 H. Fruit fleshy ; southern. Myrtus (p. 204). Eugfenia 

 (p. 206). Psfdium (p. 206). 

 G. Petals 4, rounded and broadly spreading. (I.) 

 I. Flowers 1-2 inches wide, usually sweet-scented. Phila- 



d^lphus (p. 196). 

 I. Flowers apparently over 2 inches wide (the true flowers 

 are small and in the center). C(5rnus (p. 214). 

 G. Petals 4, long and slender (somewhat united at base). 

 Chion^nthus (p. 287). 

 B. Flowers smaller. (J.) 



J. Petals 5; stamens many. Hypericum (p. 77). Eugenia 



(p. 206). 

 J. Petals 4, yellow ; stamens many. Ascyrum (p. 74). 

 J. Petals and stamens 4 or 5. Eu6nymus(p.91). C6rnus(p. 214j. 



