BOTANY OF LA SAIvLE COUNTY. 73 



PYRUS. Pear, Apple, Trees of medium size. 



P. coronaria. Crab Apple. 



P. arbutifolia. Choke Berry. Fruit R. or P. 

 Looks like a wild cherry but has a very puckery 

 taste; flowers W.; M. Ju. 2 to 7 ft. Rocky 

 banks of streams. 



P. Americana. Mountain Ash. Leaves pinnate 

 of 9 to 15 lanceolate sharply serrate leaflets; 

 flowers in clusters, small, W.; fruit red berries 

 in a large cluster. 



CRATAEGUS. Hawthorn. White Thorn. Thorny 

 Shrubs or small trees. 



C. cocinea. Scarlet Fruited Thorn. . Leaves thin 

 roundish ovate, sharply toothed, sometimes 

 lobed, on slender petioles; flowers W.. M., 15 to 

 25ft. Fruit bright red. Along streams. 



C. tomentosa. Black Thorn. Branches gray with 

 some stout gray thorns; leaves large, woolly 

 beneath ovate, toothed narrowed to base; flow _ 

 ers small; fruit red, flowers later than coccinea. 



C. punctata. Branches horizontal, leaves obovate 

 narrowed to base, upper end toothed, dull; fruit 

 large, R. or Y. 



C. crusgalli. Cockspur Thorn, Thorns long, 

 slender, leaves wedge-obovate, thick, shining 

 above, dark G., serrate above middle; fruit dull 

 red, 10 to 15 ft. Along streams. 



AMKLANCHIKR. June Berry. Shad Flower. Ser- 

 vice Berry. 



A. Canadensis. A small straggling tree 8 to 25 

 ft., producing an abundance of W. flowers in 

 early spring before the leaves appear; leaves 

 ovate-oblong, acute, finely serrate; fruit a red 

 berry. Bark smooth, light gray. Along bluffs. 



Order 34. CALYCANTHA CEAE. Calycanths. 



