1905.] NATURAL SCIENCES OF PHILADELPHIA. 581 



wing-margined toward the apex, becoming glabrous, occasionallyjfiir- 

 nished with minute glands; on vigorous shoots leaves oval, acute or 

 abruptly acuminate, coarsely doubly serrate often nearly to the base, 

 sometimes laterally divided into short acute lobes, 8-10 cm. long and 

 5-6 cm. wide, with stout petioles wing-margined nearly to the base, and 

 foliaceous lunate coarsely serrate stalked petioles 1-1.5 cm. in length. 

 Floivers 1.3-1.5 cm. in diameter, on slender pedicels, in compact glabrous 

 corymbs, with caducous glandular bracts and bractlets; calyx-tube 

 narrowly obconic, the lobes linear, acuminate, entire or occasionally 

 glandular-serrate, sparingly villose on the inner surface below the mid- 

 dle; stamens 15; anthers rose color; styles 2 or 3, surrounded at the 

 base by tufts of pale hairs. Fruit ripening toward the end of Septem- 

 ber in few-fruited drooping clusters, short-oblong, full and rounded at 

 the ends, dull red covered with a glaucous bloom, 1-1.2 cm. long; calyx- 

 cavity narrow, the lobes little enlarged, reflexed and closely appressed, 

 villose above, often deciduous from the ripe fruit; nutlets narrowed at 

 the apex, rounded at the base, very prominently ridged on the back, with 

 a broad high grooved ridge, 8-10 mm. long and 5-6 mm. wide. 



A bushy tree, with a short stout stem occasionally 30 cm. in 

 diameter, covered with light red-brown scaly bark, stout ascending 

 ashy-gray branches forming a broad open head, and stout branchlets 

 glabrous, dull green and marked by numerous pale lenticels when they 

 first appear, light orange or reddish-brown and very lustrous in their 

 first winter, dull orange or dull gray-brown in their second year, and 

 armed wath numerous stout straight or slightly curved dark reddish- 

 brown ultimately ashy-gray spines 2-3 cm. in length. 



Bucks county: Meadows of Perkiomen creek, Sellersville, C. D. 

 Fretz (Nos. 8, 24, 113), May, 1881, May, July, September and October, 

 1899. 



Well distinguished from Cratcegus crus-galli Linnaeus, by the shape of 

 the acute leaves, their prominent veins, the hairs on the upper surface 

 of the midribs, and especially by the shape of the large leaves of vigor- 

 ous shoots, by the larger number of stamens and the earlier ripening of 

 the fruit. 



3. Crataegus canbyi Sargent. 



Bot. Gazette, XXXI, 3 (1901); Silva N. Am., XIII, 41, t. 638; Man. .369, 

 f. 287. 



Bucks county: Point Pleasant, C. D. Fretz (No. 116), September, 

 1899; Tohikon, C. D. Fretz (No. 25), July 1, 1899. Delaware county: 

 Tinicum, B. H. Smith, October, 1899, May and October, 1900 (No. 

 1916), May, 1902. Bucks county: Near Quakertown, C. D. Fretz (No. 



