596 PROCEEDINGS OF THE ACADEMY OF [Sept., 



turning yellow or greenish-yellow in the autumn and fahing during the 

 latter half of October; petioles slender, grooved on the upper side, 

 abruptly wing-margined at the apex, glabrous, glandular, with minute 

 stipitate dark caducous glands, 1.5-2.2 cm. in length; stipules linear 

 to lanceolate, often falcate, usually lobed at the base, glandular-serrate, 

 fading red or j^ellow, caducous. Flowers 1.7-2.5 cm. in diameter, on 

 glabrous pedicels 1-2 cm. long, in 3-10 usually about 6-flowered com- 

 pact corymbs, with oblong-obovate linear conspicuously glandular 

 bracts and bractlets often persistent until after the flowers open ; calyx- 

 tube broadly obconic, the lobes separated by wide sinuses, narrow, 

 acuminate, sometimes glandular, or rarely slightly serrate above the 

 middle, reflexed after anthesis ; stamens 20 ; anthers pale yellow ; styles 

 3-5, usually 4 or 5. Fruit ripening late in October or in Noveml^er and 

 often retaining its color on the ground until the following spring, in 

 l_6-flowered clusters, globose or depressed-globose, slightly retuse at 

 the base, rounded or slightly concave at the apex, remaining green until 

 October, when fully ripe dark red to cardinal and usually blotched with 

 dark olive-green or russet, punctate with greenish or russet dots and 

 covered with a slight glaucous bloom, 1.3-1.6 cm. in diameter and 

 1.2-1.5 cm. high; calyx enlarged and prominent, with a short tube, a 

 broad deep cavity and erect or spreading lobes dark red on the upper 

 side toward the base, mostly persistent on the ripe fruit; flesh greenish, 

 firm, bitter, acid; nutlets usually 4 or 5, rounded at the ends, rounded 

 and ridged on the back, with a low slightly grooved ridge, 6-8 mm. long 

 and about 4 mm. wide. 



A tree occasionally 5 m. high, with a stem sometimes 1 m. long and 

 10-15 cm. in diameter, covered with dark gray-brown scaly bark, stout 

 horizontal or semierect flexuose olive-gray branches forming a round- 

 topped head, and slender nearly straight branchlets marked by occa- 

 sional large oblong pale lenticels, dark reddish-brown when they first 

 appear and darker and purplish during their first winter, and armed 

 with numerous stout straight or slightly curved orange-brown ulti- 

 mately purplish or nearly black spines 2.5-6 cm. in length, and on old 

 stems much branched and sometimes 10 cm. long. 



Berks covmty : Border of woods in high rocky ground, North Heidel- 

 berg township, C. L. Gruber (Nos. 159, type! and 176), May, September 

 and October, 1902, 1903 and 1904. 



13. Crataegus cestrica n. sp. 



Glabrous. Leaves ovate, acute, broadly concave-cuneate and mostly 

 entire or glandular, with stipitate bright red glands at the base, sharply 

 doubly serrate above, with straight glandular teeth, and slightly divided 



