ToUon 



441 



6. NORTHWESTERN SERVICE TREE — Amelanchier florida Lindley 



Amelanchier Gormani Greene. Amelanchier Cusickii Fernald 



The Northwestern Juneberry occurs along streams and lakes and on hillsides 

 from Alaska to Washington, Montana, and California, sometimes becoming 7 

 meters high, with a trunk 2 to 

 2.5 dm. in diameter; it is usually 

 smaller, however, and often a 

 shrub. It has been confused 

 with Amelanchier alnijolia by 

 most authors, but is regarded as 

 distinct from that species by re- 

 cent students of our northwest- 

 em flora. 



Its bark is thin, brown, 

 nearly smooth. The young 

 twigs vary from smooth to 

 loosely hairy; the winter buds 

 are about . 5 mm. long, either 

 smooth or with somewhat hairy 

 scales. The leaves are thin, 

 rather bright green, either smooth or hairy when young, always nearly or quite 

 smooth when mature; they are mostly elliptic or ovate-oblong, varying to obovate, 

 sometimes twice as long as wide, 3 to 6 cm. long, obtuse at the apex, rounded, 

 slightly cordate, or sometimes narrowed at the base, rather coarsely toothed above 

 the middle, sometimes toothed to about two thirds of the way toward the base; 

 their stalks are smooth or hairy, usually less than half as long as the blades. The 

 racemes of flowers are short and rather dense. The blue-black often glaucous 

 fruit is larger than that of the other species, sometimes 2 cm. in diameter, and is 

 much collected for food. 



Fig. 388. — Northwestern Service Tree. 



V. TOLLON 



GENUS HETEROMELES RCEMER 

 Species Heteromeles arbutif olia (Alton) Roemer 

 Crateegus arbuHjolia Alton 



LSO called Toyon, Christmas berry, and California holly, this tree 

 occurs in western California, Lower California, and on the adjacent 

 islands. Upon the latter it attains the greatest development, reaching 

 a height of 9 meters, with a trunk diameter of 4.5 dm.; often, how- 

 ever, it is merely a much-branched shrub. 



