1905.1 NATURAL SCIENCES OF PHILADELPHIA. 



603 



ous very slender slightly curved lustrous purplish spines 4-6 cm. in 

 length. 



Bucks county: Near Sellersville, C. D. Fretz (No. 112, type!), May, 

 1898, May and October, 1899; Fretz and Sargent, September, 1899. 

 Rare. 



20. Crataegus deltoides Ashe. 



Jour. ElLsha Mitchell Sci. Soc, XVII, pt. 2, p. 19 (1901). 

 Leaves broadly ovate, acute and short-pointed at the apex, rounded 

 truncate or occasionally abruptly cuneate at the wide base, sharply 

 and often doubly serrate, with straight glandular teeth, and slightly 

 divided into numerous small acuminate lobes; nearly fully grown when 

 the flowers open about the end of May and then light yellow-green, 

 roughened above by short pale hairs and sparingly villose along the 

 base of the upper side of the midribs, and at maturity thin but firm in 

 texture, dull blue-green and scabrate on the upper, and pale blue- 

 green on the lower surface, 5-6 cm. long and 4-5 to nearly 6 cm. 

 wide, with slender yellow midribs and 4 or 5 pairs of thin primary 

 veins arching to the points of the larger lobes ; petioles very slender, 

 wing-margined at the apex, glandular, with minute sometimes persistent 

 glands, 1.5-3 cm. in length; stipules linear, acuminate, glandular, 

 fading red, caducous. Floivers 1.8-2 cm. in diameter, on elongated 

 slender pedicels, in 5-S-flowered compact glabrous corymbs, with 

 lanceolate conspicuously glandular bracts and bractlets mostly per- 

 sistent until after the flowers fall; calyx-tube broadly obconic, the 

 lobes gradually narrowed from wide bases, acuminate, entire, obscurely 

 toothed, tipped with dark glands, reflexed after anthesis; stamens 10; 

 anthers dark rose color; styles 3-5, surrounded at the base by a broad 

 ring of matted pale hairs. Fruit ripening from the middle to the end 

 of September, on long slender pedicels, in drooping few-fruited clusters, 

 pyriform when first fully grown, becoming depressed-globose at ma- 

 turity, slightly angled, without a bloom, bright red, 1.1-1.3 cm. in 

 diameter and rather broader than long; calyx much enlarged, without 

 a tube, and with a broad shallow cavity, and coarsely serrate erect and 

 incurved lobes very conspicuous on the unripe fruit and persistent 

 throughout the season; flesh thin, yellow, dry and mealy; nutlets 

 thick, gradually narrowed and pointed at the ends, irregularly ridged 

 and very deeply grooved on the back, about 7 mm. long and 5 mm. 

 wide. 



A shrub 2-3 m. high, with slender nearly straight branchlets marked 

 by small pale lenticels, light orange-green when they first appear, 

 orange-brown and lustrous during their first season, becoming dull 



