626 PROCEEDINGS OF THE ACADEMY OF [Sept., 



dark red-brown during their first season and ultimately dark brown 

 or gray-brown, and armed with numerous stout straight or slightly 

 curved bright red-brown shining spines 6-7 cm. in length. 



Berks county: Borders of oak woods, in gravelly soil, near Robesoni- 

 ana, North Heidelberg township, C. L. Gruber (No. 14), May and Sep- 

 tember, 1900. 



19. Crataegus sequax Ashe. 



Jour. Elisha Mitchell Sci. Soc, Vol. XX, p. 40, 1904. 



Leaves ovate, acuminate and often long-pointed at the apex, rounded, 

 truncate or occasionally slightly cordate at the broad entire base, 

 sharply doubly serrate above, with slender straight glandular teeth, 

 and more or less divided into numerous narrow acuminate lateral lobes, 

 more than half-grown when the flowers open about the 10th of May 

 and then covered above with soft white hairs and pale and glabrous 

 below, and at maturity membranaceous, dark yellow-green, glal^rous 

 and very smooth on the upper and pale and conspicuously reticulate- 

 venulose on the lower surface, 3-4.5 cm. long, 2.5-4 cm. wide, with thin 

 midribs and slender veins extending obliquely to the points of the 

 lobes; petioles slender, grooved on the upper side, slightly wing-mar- 

 gined at the apex, tinged with red, glandless or sparingly glandular, 

 1.5-2.5 cm. in length; leaves on vigorous shoots cuneate or cordate at 

 the base, more deeply lobed and often deeply cleft, with stout broadly 

 winged conspicuously glandular petioles. Flowers 1.8-2.1 cm. in 

 diameter, on slender glabrous pedicels, in 5-9-flowered compact corymbs 

 with linear glandular bracts and bractlets, fading red, mostly decidu- 

 ous before the flowers open; calyx-tube broadly obconic, the lobes 

 gradually narrowed from wide bases, entire or sparingly minutely 

 serrate, glabrous or slightly pubescent toward the apex, reflexed after 

 anthesis; stamens 5-10, frequently 8; anthers purple; styles 3-5, 

 usually 3 or 4, surrounded at the base by a narrow ring of hoary tomen- 

 tum. Fruit ripening about the 20th of September and falling gradually 

 during several weeks, on slender pedicels, in few-fruited drooping clus- 

 ters, globose to depressed-globose or rarely to oblong-globose, occasion- 

 ally slightly tapering toward the base, dark crimson to cardinal, usually 

 mottled with russet or orange, covered with a glaucous bloom, 1.2-1.5 

 cm. in diameter; calyx much enlarged, wdth a broad shallow cavity, 

 and spreading and reflexed or erect lobes dark red on the upper side 

 below the middle, their tips often deciduous from the ripe fruit; flesh 

 thick, soft and juicy, orange color often tinged with red ; nutlets usually 

 3 or 4, rounded at the narrow ends, ridged on the back, with a broad 

 deeply grooved ridge, 7-8 mm. long and about 4 mm. wide. 



