KEYS TO THK GENERA 



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



Gardenia (p. 2tn). 

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



Neriuin (p. 270). 

 D. Flowers with a conspicuous colored calyx. Clerodendron 



(p. 291). 

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



border. Viburnum (p. 210). 

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



Forsythia (p. 274). 

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



summer. Kalmia (p. 2o(i). 

 A. Flower petals entirely separate (in Chiominthus only apparently 



separate). (E.) 

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



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



pericum (p. 77). 

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



Calycanthus (p. 180). 

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



Piinica (p. 20!)). 

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



Lagerstrcemia (p. 200). 

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



in Cfstus). (G.) 

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



aromatic. (H.) 

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



(p. 71). 

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



(p. 206). Psfdium (p. 20(i). 

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



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

 delphia (p. 196). 

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



are small and in the center). Co" rims (p. 214). 

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



Chionanthus (p. 287). 

 E. Flowers smaller. (J.) 



J. Petals 5; stamens many. Hype"ricurn (p. 77). Eugenia 



(p. 206). 



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

 J. Petals and stamens 4 or 5. Euonymus (p. 91) . Cornus (p. 2 1 h . 



