KEYS TO THE GENERA 45 



H. Salver-shaped, long tube and a 



'4-lobed border. Daphne 



(p. 298). 

 5-lobed spreading border. 

 Plumbago (p. 268). 

 G. Petals separate. (I.) 



I. Flowers large with 6, 9, or 12 thick petals. Magnolia (p. 58). 

 I. Flowers with 5 petals (or double). Exochorda. (p. 161). 



Spiraea (p. 146). 

 I. Flowers irregular, pea-shaped. Cytisus (p. 113). 

 F. Flowers small, under i inch, with the petals separate, or so 

 nearly so as to appear separate. (J.) 

 J. Petals definitely 4 (in Skimmia 4 or 5). Cornus (p. 214). 



Nemopanthus (p. 88). Skimmia (p. 84). 

 J. Petals 5 (rarely 4-6). Ilex (p. 86). Spiraea (p. 146). Ledum 

 (p. 263). Cotoneaster (p. 176). Polygonum (p. 299). Ceano- 

 thus (p. 97). 

 J. Other southern shrubs with small white or nearly white flowers. 

 Arbutus (p. 249). Ardisia (p. 268). Cley^ra (p. 81). Pitt6- 

 sporum (p. 68). Symplocos (p. 273). Ruscus (p. 323). 

 F. Flowers small, under ^ inch, with plainly united petals. (K.) 

 K. Flowers tubular, urn-shaped, or globular. (L.) 

 L. Fruit dry many-seeded pods. Andr6meda (p. 249). 

 L. Fruit fleshy with 10 or more seeds. Gayluss^cia and Vaccin- 

 ium (p. 244) . 



{plant spiny. Bum^lia (p. 269). 

 no spines. Styrax (p. 270). Vaccinium 

 (p. 244). 



* Flowers inconspicuous, catkin-like or very rare. (M.) 

 M. Flowers in catkhis ; wood soft. Salix (p. 314). 



M. Leaves oblong, evergreen ; juice milky, Ficus (p. 308). 



M. Leaves broad and rounded at tip ; fruit smoke-like. Ehus (p. 107). 



M. Fruit 3-seeded berries. Rhamnus (p. 93). 



M. Fruit 1-seeded drupes. Myrica (p. 311). 



Key 6. Leaves alternate, simple, with notched but not lobed edges. 

 (For small-leaved plants, leaves under 1 inch long, use Key 9, p. 51.) 

 Key based on all plant parts. Key based more particularly on 

 flowers will be found next, Key 6a. 



* Spiny or thorny plants. (A.) 



A. Flowers with 5 separate petals, blooming in spring. Crataegus 



(p. 173). Primus (p. 142). Pyrus (p. 182). 

 A. Flowers nodding, yellow or yellowish. Elaeagnus (p. 300). B^r- 



beris (p. 64). 



