1905.] NATURAL SCIENCES OF PHILADELPHIA. 595 



1.5-2 cm. long, and foliaceous lunate sharply serrate persistent stipules. 

 Floivers 1.8-2 cm. in diameter, on stout elongated glabrous pedicels, in 

 mostly 5-9-flowered compact corymbs with linear acute glandular 

 bracts and bractlets generally caducous before the petals fall ; calyx- 

 tube narrowly obconic, the lobes slender, acuminate, nearly entire, or 

 serrate sometimes to the base, reflexed after anthesis; stamens 20; 

 anthers pale yellow ; styles 4 or 5, surrounded at the base by a few pale 

 .hairs. Fruit in few-fruited spreading clusters, subglobose to short- 

 oblong or slightly obovate, dark deep red marked by large pale dots, 

 about 1.4-1.5 cm. in diameter; calyx prominent, with a long tube, a nar- 

 row deep cavity, and reflexed lobes, their tips mostly deciduous from the 

 ripe fruit ; flesh yellow, thin, hard, dry and mealy ; nutlets 4 or 5, bright 

 red-brown, full and rounded &f the ends or narrowed and acute at the 

 apex, prominently but very irregvilarly ridged and grooved on the back, 

 6-7 cm. long and about 5 mm. wide. 



A tree sometimes 6 m. high, with a trunk 2.5 cm. in diameter, covered 

 with dark gray-brown bark separating into thin plate-like scales, small 

 spreading branches forming a round-topped head, and slender nearly 

 straight branchlets, dark yellow-green tinged with red and covered 

 with a glaucous bloom when they first appear, bright red-brown and 

 marked with small pale lenticels during their first season, darker brown 

 and rather lustrous the following year, and armed with slender nearly 

 straight bright red -brown shining spines .3-5 cm. in length, sometimes 

 becoming on old stems 10-12 cm. long and furnished with numerous 

 stout branches. 



Delaware county: Upper Darby, near the State road, B. H. Smith 

 (No. 195, type!). May and October, 1901, May, 1902, May, 1903, Smith 

 and Sargent, September, 1902; B. H. Sfyiith, Crum Creek, Newtown 

 (No. 234), May, 1903. 

 12. Crataegus callosa n. sp. 



Leaves broadly ovate to deltoid-ovate or rarely oval, acute or acumi- 

 nate, rounded or occasionally truncate at the entire base, coarsely 

 doubly serrate above, with straight glandular teeth and slightly divitled 

 into numerous small acuminate lateral lobes, red-bronze and slightly 

 pubescent near the base of the' upper side of the midribs when they 

 unfold, about half-grown when the flowers open about the 20th of May 

 and then membranaceous, yellow-green and nearly glabrous, and at 

 maturity thin but firm in texture, dark bluish-green on the upper and 

 paler on the lower surface, 4.5-8 cm. long and 4-7 cm. wide, or on vig- 

 orous shoots often rather larger, with thin orange-colored midribs and 

 slender primary veins extending obliquely to the points of the lobes, 



