122 



TREES OF THE NORTHERN UNITED STATES 



4 nearly equal wings. A small, beautiful tree, 10 to 30 ft. high, more 

 hardy than Halesia diptera, and therefore cultivated occasionally 

 throughout. Wild in Virginia and south. 



GENUS 59. SYMPLOCOS. 



Shrubs or small trees, with leaves 

 furnishing a yellow dye. 



S^mplocos tinctoria, L'Her. (HORSE- 

 SUGAR. SWEKTLEAF.) Leaves simple, alter- 

 nate, thick, 3 to 5 in. long, elongate-oblong, 

 acuminate, nearly entire, almost persistent, 

 pale beneath , with minute pubescence, sweet- 

 tasting. Flowers 6 to 14, in close-bracted, 

 axillary clusters, 5-parted, sweet-scented, 

 yellow ; in early spring. Fruit a dry drupe, 

 ovoid, y z in. long. A shrub or small tree, 

 s. tinct&ria. 10 to 20 ft. high. Delaware and south. 



ORDER XXIX. OLEACEJE. (OLIVE FAMILY.) 



An order of trees and shrubs, mainly of temperate re- 

 gions. 



GENUS 60. FRAXINTJS. 



Trees with petioled, opposite, odd-pinnate leaves (one 

 cultivated variety has simple leaves). Flowers often in- 

 conspicuous, in large panicles before the leaves in spring. 

 Fruit single-winged at one end (samara or key-fruit), in 

 large clusters; ripe in autumn. Some trees, owing to the 

 flowers being staminate, produce no fruit. Wood light- 

 colored, tough, very distinctly marked by the annual 

 layers. The leaves appear late in the spring, and fall 

 early in the autumn. 



* Flowers with white corolla ; a cultivated small tree 8. 



* Flowers with no corolla. ^A.) 



A. Leaves pinnate ; leaflets petiolate ; calyx small, persistent on 

 the fruit. (B.) 



B. Fruit broad-winged, \ in. wide. South 5. 



B. Wings much narrower. (C.) 



