54 KEYS TO THE GENERA 



B. Flowers very large, 2-4 inches, white or pink with 4 petals, in reality 

 tracts around a head of small flowers. C6mus florida (p. 214). 



* Flowers small, white or pinkish, somewhat irregular in pairs on 



opposite-leaved bushes. Lonicera (p. 230). 



* Flowers in slender catkins. Alnus (p. 312). SMix (p. 314). B^tula 



(p. 311). Cdrylus (p. 313). Qu6rcus (p. 314). 



Key 11. Key to ^ose deciduous hushes which have conspicuous fruit 

 during the fall and more or less of the winter when hare of foliage. The 

 arrangement of the leaves is easily determined by their soars. The num- 

 bers refer to the pages. 



* Alternate-leaved bushes with fleshy, usually orange, or red berries. 



(A.) 

 A. Plants without thorns or spines. Ilex (p. 86). Cotonefister 

 (p. 174). Pyrus (p. 182). Photlnia (p. 179). 



A. Plants more or less thorny. BSrberis (p. 64). Lycium (p. 284). 



* Alternate-leaved bushes with dry fruits. (B.) 



B. Fruit rounded and apparently berry-like. (C.) 



C. Plant without spines or thorns; berries in clusters. Eh\is 

 (p. 107). 



C Plant with spines or thorns ; berry-like fruit more scattered. 

 E6sa (p. 166). 

 B. Fruit flat or wafer-like(^ inch broad). Ptfelea (p. 84). 

 B. Fruit a capsule, more or less 5-lohed and always 5-celled. (D.) 



D. Fruit large, 1 inch long. Hibiscus (p. 81). 



D. Fruit nearly ^ inch long, 5-seed-ed. Exoch6rda (p. 161). 

 D. Fruit smaller and many-seeded. Spiraea (p. 146). Physoc3,r- 

 pus (p. 158). 

 B. Fruit a capsule, 3-lobed and 3-celled. (B.) 



B. Capsule 3-seeded and splitting into 3 nutlets. Cean6thus (p. 97). 

 B. Capsule many-seeded, 3-angled. Clfethra (p. 265). 

 B. Capsule woody, | inch long, 2-celled, 2-seeded. HamamSlis 



(p. 202). Coryl6psis (p. 204). 

 B. Fruits hairy clustered, much like silky white Brushes. Bdccharis 

 (p. 241). 



* Opposite-leaved bushes with fleshy berries. (F.) 



F. Drupes with 1 more or less flattened seed. Viburnum (^p. 219). 

 Cdrnus (p. 214). 



F. Berries 2-seeded, in close clusters along the branches. Symphori- 

 cirpos (p. 228). 



* Opposite-leaved bushes with dry fruits. (G.) 



G. Fruit large, over 1 inch long, pear-shaped with many brown seeds. 

 Calycinthus (p. 186). 



