1]8 



EUTACE^: RUE FAMILY. 



28.— Shrubby Trefoil. Hop-Tree. {Ptelea angustifoUa, BenihA 



Chiefly a slirub, or sometimes a small tree 15 to 25 feet iu Leiglit, 

 with very slender trunk, usually growing on hillsides in dry, gravelly 

 soil, tlirongb southern Colorado (extending southward into Mexico ;iiid 

 Texas). Eareiy attaining sufficient size to be of economic value. The 

 wood is heavy and hard. 



Dcscripilon. — Leaves compoimd, composed of three leaflets, which are given ofVat 

 the eml of a slender (leaf) stem, 1 to 2 inches long and t to 1 inch wide, lance to 

 obloug-lauce-shaped, usnally tapering to a point at either end; margin entire or 

 with shallow rounded teeth ; smooth, old leaves shiny. Frnit (much like that of the 

 elm) surrounded by an early orbicular, thin, veiny wing, ^ to f of an inch iu diame- 

 ter. Bark dark brown and often thickly dotted. 



RHAMKACE^ : BIJCKTHOR]^T FAMILY. 



29.— Blue Wood. Log Wood. Purple Ha\v. [Condalla ohovaia, 



Hooker.) 



A small tree or shrub, at best seldom more than 10 to 30 feetin height 

 and with very slender trunk — 3 to 6 inches iu diameter. It is found in 

 southern New Mexico (southern Arizona and southwestern Texas, where 

 it is said to reach its greatest development), especially along streams. 

 Abundant and in manj' localities forming dense, impenetrable thickets. 

 The wood is hard and very heavy. 



Description . — Leaves J to f of an inch long, hy nV to ^ of an incli wide, chiefly broad 

 at the top end (obovate), tapering to a long point at the base; rounded at the upper 

 end, or with a lance-shaped point. Branches with smooth thin bark of a dull white 

 or grayish color; branchlets spine-like or terminating in a small sharp spine. Fruit 

 a globular berry (drupe) with scanty flesh and large hard stone; a short point or 

 beak (the persistent stigma) adheres to the end. 



30. — "Imdiais^ Cherry."* (EJiamnus Caroliniana, Walter.) 



A small tree, 15 to 30 feet in height, with a trunk 6 to 10 inches in 

 diameter 5 or sometimes reduced to a slender shrub. It is found in the 

 mountains from Colorado to Montana (eastward it ranges from Avesteru 

 Texas to northern Floiida, and northeastward through the valley of 

 the Ohio Eiver to long Island, Xew York). It prefers the rich soil of 

 bottom-lands and along streams 5 probabl^^ reaching its largest size in 

 Texas and Arkansas. The wood is rather light and hard, but not strong. 



BescrijyUon. — Leaves 3 to 6 inches long, 1 to 2 :^ inches wide; oblong lance-shaped 

 or ovate-oblong; with rounded base and rather short point; margin wavy, nearly 

 entire or with very small teeth ; leaf-stems hairy. Flowers and fruit borne in the , 

 axils of the leaves, the latter black, somewhat pear-shaped, and with three large 

 seeds ; sweet and edible. 



* See Ehamnus in list of shrubs, page 190. 



