44 NEW YORK STATE MUSEUM 



3.5-4.5 wide, with thin midribs and primary veins; petioles slender, 

 slightly wing-margined at the apex, glandular, with minute scattered 

 glands, 2-;^ cm in length ; leaves on vigorous shoots deltoid to rhom- 

 bic, thin, coarsely serrate, often 6-7 cm long and broad, with 

 slender wing-margined conspicuously glandular petioles. Flowers 

 on long slender pedicels, in 5-7-flowered compact corymbs, with 

 linear to linear-obovate glandular bracts and bractlets fading rose 

 color; calyx-tube broadly obconic, the lobes gradually narrowed 

 from the base, slender, acuminate, entire or occasionally sparingly 

 dentate below the middle; stamens 10; anthers red; styles 2 or 3. 

 Fruit remaining hard and dry in the autumn, obovate, dark red, 

 marked by many large pale dots, pruinose, about i cm long and 

 8-9 mm wide; calyx prominent, with a long tube, a deep narrow 

 cavity, and spreading persistent lobes ; flesh thin, yellowish green ; 

 nutlets 2 or 3, rounded at the base, acute at the apex, ridged on the 

 back, with a low rounded ridge, light colored, 7-8 mm long, and 

 4-5 mm wide. 



A shrub, with slender nearly straight branchlets, olive-green 

 tinged with red when they first appear, becoming light chestnut- 

 brown and lustrous in their first season and ultimately dark gray- 

 brown, and armed with straight slender dark purplish spines 2.5-3 

 cm in length. 



Niagara Falls, J. Dunbar (# 3, type), October 7, 1902, and June 

 I, 1904- 



Crataegus congestiflora n. sp. 



Leaves ovate, acuminate, rounded or abruptly cuneate at the 

 entire base, finely doubly serrate above, with straight glandular 

 teeth, and slightly divided into 5 or 6 pairs of broad spreading 

 acuminate lateral lobes; more than half grown when the flowers 

 open during the last week of May and then membranaceous, light 

 yellow-green and covered above by short white hairs and pale bluish 

 green and glabrous below, and at maturity thin, dark blue-green, 

 dull and glabrous on the upper surface and paler blue-green on the 

 lower surface, 4-6 cm long and 3-4.5 cm wide, with thin yellow 

 midribs and primary veins ; petioles slender, slightly wing-mar- 

 gined at the apex, sparingly glandular, 1.5-2.5 cm in length; leaves 

 on vigorous shoots short-pointed at the apex, rounded at the broad 

 base, more coarsely serrate and more deeply lobed, about 6-7 cm 

 long and 5-6 cm wide. Flowers 1.4-1.5 cm in diameter, on slender 

 glabrous pedicels, in very compact mostly 4-6-flowered corymbs; 



