590 PROCEEDINGS OF THE ACADEMY OF [Sept., 



sometimes 6-7 cm. long and wide, with stout broadly winged coarsely 

 glandular petioles. Flowers 1.7-2 cm. in diameter, on slender glabrous 

 pedicels, in 3-8-flowered simple corymbs, with small linear acuminate 

 glandular bracts and bractlets, fading brown; calyx-tube narrowly 

 obconic, glabrous, the lobes slender, acuminate, entire or slightly 

 toothed near the middle, reflexed after anthesis; stamens 18-20; an- 

 thers light rose color; styles 3-5. Fruit ripening about the 20th of 

 September, on slender pedicels, in usually 4- or 5-flowered compact 

 drooping clusters, short-oblong to subglobose, often slightly tapering 

 at the base, bright scarlet, rarely blotched with russet, covered with a 

 glaucous bloom, finally becoming very lustrous, 1.2-1.5 cm. in diam- 

 eter; calyx little enlarged, closely appressed, with a broad shallow 

 cavity and slender reflexed persistent lobes, dark red on the upper side 

 toward the base; flesh firm, light orange color sometimes tinged with 

 red ; nutlets 3 or 4, gradually narrowed and rounded at the base, acute 

 at the apex, slightly and irregularly ridged on the back, 7-8 mm. long 

 and 5-6 mm. wide. 



A broad compact bush 2-3 m. high, with numerous erect fiexuose 

 stems covered with dark gray bark and slender nearly straight glabrous 

 branchlets marked by oblong pale lenticels, light orange color tinged 

 with red and slightly glaucous when they first appear, becoming light 

 reddish or chestnut-brown in their first winter, and ashy-gray the fol- 

 lowing year, and armed with numerous stout nearly straight or slightly 

 reflexed bright chestnut-brown or purplish spines 2.5-3 cm. in length. 



Berks county: Dry open stony fields east of Reading; common; 

 C. L. Gruber (No. 112, type!), August and September, 1904, May, 1905. 



7. Crataegus virella Ashe. 



Annals Carnegie Mus., I, pt. 3, 396 (1902). Gruber, Proc. Berks County 



Nat. Sci. Club, I, 15 (Crataegus in Berks County, II). 



Leaves ovate, acuminate, cuneate or rounded at the entire base, 

 sharply doubly serrate above, with slender spreading or incurved teeth, 

 and divided into numerous small acuminate spreading lobes, more than 

 half -grown when the flowers open from the 15th to the 20th of May and 

 then membranaceous, l^luish-green and villose above, with short pale 

 deciduous hairs and below along the base of the midribs with long 

 spreading hairs, and at maturity thin but firm, dark blue-green and 

 slightly roughened on the upper and pale and still villose on the slender 

 midribs below, 3.5-4.5 cm. long, 2-4 cm. wide, with 3 or 4 pairs of 

 primary veins extending obliquely to the points of the largest lobes; 

 petioles slender, abruptly and often broadly wing-margined at the apex, 

 villose while young, with long matted hairs, becoming glabrous, glandu- 



