AsHK : Some Nkw Phnnsvlvanmax Thorns. 305 



Sarg., from which separated most easily by having fewer thorns and 

 the late ripening fruit. The ty[)ical material is from near Pittsburg. 



Crataegus populnra n. sp. A tree 4-6 m. in lieight with a slender 

 sparingly armed trunk, seldom i m. thick, and numerous short hori- 

 zontal branches forming a small oval crown ; the bark on the trunk 

 gray, broken into small scales, that on the branches lighter and 

 smooth. Twigs red-brown, becoming gray and warty the second 

 year, the wood soft, glabrous, armed with short, thick chestnut or gray 

 thorns, 2-3 cm. long. Leaves thick and firm, dark green, and at 

 first api)ressed pubescent above, soon glabrous, ])aler and glabrous 

 below, the blades ovate, 5-6 cm. long, 4-5 cm wide, rounded at the 

 serrulate base, acuminate at the apex, coarsely serrate, 2-3 pairs of 

 shallow notches ; petiole 2.5-3 cm. long, stout, roughened, with a few 

 glands. The flowers, which appear about May 20th in large, 6-12- 

 flowered, compound nearly or quite glabrous wide-spreading, corymbs, 

 5-7 cm. wide, are 16-20 mm. wide, and borne on nodding slender 

 pedicels ; calyx glabrous or puberulent, the elongated, entire, or ser- 

 rate triangular lobes spreading after anthesis ; stamens normally 10, 

 ot"ten 5, anthers purplish ])ink. The fruit, borne in small mostly 

 simple clusters, is globular, or oblong, slightly concave at the ends, 

 about 1.4 cm. long, dull red, mottled with green, russet, and scarlet, 

 and capped by the long spreading or ascending lobes ; cavity broad 

 and shallow ; seeds usually 4, scarcely grooved on the narrow back ; 

 flesh thin, firm, yellowish. The fruit ripens early in October and 

 falls after the foliage. 



Banks of streams, Berks county, Pennsylvania, C. L. Gruber and 

 W. W. Ashe. 



CRATiEGUS eburxea n. sp. A small tree 3-6 m. in height with a 

 short trunk, seldom more than i dm. thick and long horizontal 

 branches, forming a round or flattened crown ; the bark on the trunk 

 dark gray, broken into thin oblong scales, often beset with large com- 

 pound thorns ; that on the branches smooth and lighter gray. Twigs 

 slender glabrous brown-gray, nearly straight, armed with numerous 

 slender gray thorns 3-4 cm. long. Leaves thick and firm, glabrous, 

 dark green and lucid above, paler beneath, obovate elliptic or broadly 

 spatulate in outline, 4-6 cm. long, 2-3 cm. wide, rounded, or on 

 vigorous shoots pointed at the apex, cuneate at the entire base, finely 

 serrate above the middle, with 6-8 pairs of slender, inconspicuous 

 parallel ascending primary veins ; petiole very short. The flowers, 



