434 



TREES OF NORTH AMERICA 



III. ^STTVALES. 

 CONSPECTUS OF THE ARBORESCENT SPECIES. 



Leaves glabrous with the exception of small axillary tufts of pale hairs on the lower sur- 

 face, oblong-obovate; stamens 15-20; anthers pink or pale rose color. 



38. C. aestivalis (C) . 



Leaves hoary -tomentose below early in the season, becoming villose with rufous hairs most 



abundant on the midrib and veins; stamens 20; anthers deep rose color. 



Leaves oblong-obovate, acute or broad and rounded at apex, often slightly lobed 



above the middle, lustrous above; pedicels villose-pubescent. 39. C. rufula (C). 



Leaves elliptic to oblong-cuneiform, narrowed at apex, dull above; pedicels glabrous. 



40. C. opaca (C). 



38. Crataegus aestivalis Sarg. May Haw. Apple Haw. 

 Mespilus oestivalis Walt. 



Leaves oblong-obovate, rounded or acute at apex, gradually narrowed and cuneate at 

 base, glabrous with the exception of small axillary tufts of pale hairs, and coarsely crenately 

 serrate above the middle with gland-tipped teeth, beginning to unfold as the flowers open the 



Fig. 390 



middle of March, and when the fruit ripens at the end of May thin, dark green and lustrous 

 above, yellow-green below, l^'-2' long, and i'-f ' wide, with a slender yellow midrib and ob- 

 scure primary veins; petioles slender, narrow 7 wing-margined to below the middle, rarely fur- 

 nished with occasional deciduous glands, about |' in length; leaves at the ends of vigorous 

 shoots elliptic to oblong-obovate, acute and usually abruptly short-pointed at apex, con- 

 cave-cuneate at base, often lobed with one or two lateral lobes. Flowers f ' in diameter, 

 on pedicels about \' long, in compact 2 or 3-flowered corymbs; calyx-tube narrowly obconie, 

 glabrous, the lobes gradually narrowed from a broad base, short, entire, without glands, 

 acute or acuminate and often red at apex, persistent and red on the fruit; stamens 15-20: 

 anthers large, pink or pale rose color; styles usually 3. Fruit on a short slender erect 

 pedicel, about ^' long, usually solitary, short-oblong, scarlet, lustrous, about \' in length, 

 the calyx persistent with erect lobes; flesh yellow, juicy, acidulous; nutlets usually 3, acute 

 at ends, rounded and slightly ridged on the back, \ r long. 



