ROSACEAE (ROSE FAMILY) 



71 



P. coronaria, Wild Crab. Tree 6 to lo m. 

 high. Leaves ovate or elliptic, rounded at 

 base, and persistent; calyx lobes becoming 

 smooth; fruit greenish-yellow. Thickets and 

 open woods. April and May. 



P. arbutifolia, Chokebekry. Shrub i to 3 

 m. high. Leaves oblong-oblanceolate, acute, 

 serrate, tomentose beneath ; pedicels, calyx and 

 young fruit tomentose ; ripe fruit red. Swamps 

 and low woods. March to May. 



Pyrus coronaria. Wild crab. 



P. americana, Mountain Ash. Trees or 

 tall shrubs, nearly smooth. Leaves pinnate; leaflets 13 to 15, lanceolate, 

 taper-pointed, serrate; fruit berry-like, bright red, about the size of 



large peas. Woods. May and 



June. 



Pyrus arbutifolia, Chokeberry. 



AMELANCHIER 



Small trees or shrubs with 

 smooth leaves, white flowers 

 in racemes. Stamens nu- 

 merous ; carpels 5 ; the berry- 

 like pome lo-celled on ac- 

 count of false partitions. 



A. canadensis, Service 

 Berry. Trees or shrubs 3 to 12 m. high. Leaves ovate, usually cor- 

 dated base, pointed finely and sharply serrate; flowers large, in droop- 

 ing racemes; petals narrowly oblong, 15 to 25 

 mm. in length ; fruit crimson or purplish. In 

 dry woods. March to May. 



A. oblongifolia, Shadbush. Shrubs or small 

 trees, 2 to 6 m. high. Young leaves and racemes 

 white, tomentose; leaves oblong, usually rounded 

 at each end, finely serrate; flowers numerous, in 

 dense racemes ; petals obovate or oblong, 5 to 10 

 mm. in length. Moist woods and rocky grounds. 

 April, May. 



CRATAEGUS 



Shrubs or small trees, usually spiny, with 



Amelanchier, 

 Service berry. 



