40 KEYS TO THE GENERA 



* Leaves with 3 small glossy entire-edged blades ; twigs green, 4-angled. 



J^ininum (p. 273). 



* Leaves with 3 notched blades ; fruit dry. Forsythia (p. 274). Staphy- 



Ifea (p. 105). Acer (p. 103). 



* Leaves pinnate of 5-11 blades. (A.) 



A. Fruit inflated bladder-like ; blades regularly and finely notched. 



Staphylfea (p. 105). 

 A. Fruit, if formed, 2-winged, maple-like ; blades irregularly and 



coarsely notched. Acer (p. 103). 

 A. Fruit elongated, 2-celled, 4-seeded ; some of the leaves simple. 



(Persian LUac) Syrfnga pSrsica lacini^ta (p. 277). 

 A. Fruit a berry 2-seeded, blades of leaves less than an inch long, 



entire-edged. Jfeminum (p. 273). 

 A. Fruit a, beiTy ; blades over an inch long, notched. Sambiicus 



(p. 226). 



A. Fruit a long capsule with winged seeds ; flowers large, yellow. 

 T6coma (p. 285). 



* Leaves twice-pinnate, blades much cut; fruit a berry. Sambiicus 



(p. 226). 



* Leaves palmate of 5-11 blades, blades all from one point. (B.) 



B. Leaves 5-7-bladed, spicy when bruised ; fruit berries. Vitex 

 (p. 289). 



B. Leaves 5-7-bladed, not spicy; fruit large capsules. iEsculus 



(p. 102). 

 B. Leaves 5-11-bladed ; fruit dry, 2-winged. Acer (p. 103). 



Key 4a. Key based on flowers. 



* Flowers conspicuous either by clustering or by large individual flow- 



ers. CA.) 

 A. Flowers yellow (B.) 



B. In early spring or winter before leaves expand. (C.) 

 C. Large, 1 inch, bell-shaped, 4-lobed. Forsythia (p. 271). 

 C. Smaller with a slender tube and 5-lobed spreading border (or 

 double). Jasminum (p. 273). 

 B. In late spring, of 4 unequal petals, .^culus (p. 102). 

 A. Flowers white to purple or blue. (D.) 

 D. Irregular, 2-lipped, in summer; herbage spicy. Vitex 



(p. 289). 

 D. Regular, with the corolla united more or less. (E.) 

 E. Flowers tubular with 4-lobed spreading border. (Lilac) 



Syrfnga (p. 275). 

 E. Flowers tubular with a 5-lobed spreading border (or double). 

 Jasminum (p. 273). 



