1905.] NATURAL SCIENCES OF PHILADELPHIA. B33 



tened head, 2-3 m. tall and broad, and slender, nearly straight or 

 slightly zigzag branchlets marked by large pale lenticels, dark orange- 

 green and slightly or densely villose or glabrous when they first appear, 

 light red-brown and lustrous during their first season and dull gray- 

 brown the following year, and armed with numerous slender nearly 

 straight bright red-brown and shining ultimately ashy-gray spines 

 3-6 cm. in length. 



Berks county: Near Kutztown, C. L. Gruher (No. 13), 1901, May 

 and July, 1903, (No. 195), 1903, May and August, 1904. Bucks county : 

 Meadows at California, W. M. Canby, May, 1900; C. D. Fretz (No. 123), 

 May and September, 1900; Fretz and Sargent, September, 1902. Also 

 from central and western New England to Ontario, eastern Michigan 

 and western New York; rarely arborescent in southern New England. 

 3. Crataegus evansiana n. sp. 



Leaves rhombic to ovate or rarely oval, acute or short-pointed and 

 acuminate at the apex, gradually narrowed from near or above the 

 middle to the concave-cuneate slender entire base, finely often doubl}^ 

 serrate above, with incurved teeth ending in minute dark glands, and 

 irregularly divided toward the apex into short broad lobes, more than 

 half-grown when the flowers open from the middle to the end of May 

 and then membranaceous, dark yellow-green, very lustrous and slightly 

 pubescent along the midribs above and dull, pale and glabrous below 

 with the exception of large axillary tufts of white hairs, and at maturity 

 coriaceous, glabrous, dark green, lustrous and very smooth on the upper 

 and yellow-green on the lower surface, 4-5 cm. long and 3.5-4 cm. wide; 

 petioles slender, grooved on the upper side, winged toward the apex, 

 glandular, with small scattered dark red glands, villose, sometimes 

 becoming nearly glabrous, and 2-3 cm. in length; stipules linear, 

 glandular, bright scarlet, caducous ; leaves on vigorous shoots broadly 

 ovate to nearly orbicular, coarsely serrate, often three-lobed by deep 

 narrow sinuses and 5-6 cm. wide, with stout conspicuously glandular 

 petioles broadly winged nearly to the base and foliaceous lunate glandu- 

 lar-serrate persistent stipules. Flowers about 2 cm. in diameter, on 

 slender elongated slightly villose pedicels, in compact 4-8- usually 

 5-flowered corymbs; calyx-tube narrowly obconic, glabrous, the lobes 

 slender, acuminate, minutely glandular-serrate, tipped with dark red 

 glands, glabrous on the outer, puberulous on the inner surface above 

 the middle, reflexed after anthesis; stamens 20; anthers bright rose 

 color; styles 5. Fruit ripening early in October, on stout reddish pedi- 

 cels, in drooping clusters, subglobose to short-oblong, full and rounded 

 at the apex, narrowed at the base, scarlet, about 1 cm. long; calyx 



