1910.] NATURAL SCIENCES OF PHILADELPHIA. 249 



on the inner surface, reflexed after anthesis; stamens 20; anthers 

 pink; styles 2 or 3, surrounded at the base by a few pale hairs. Fruit 

 ripening the end of September, on slender drooping pedicels, in few- 

 fruited clusters, subglobose to ovate, crimson, lustrous, marked by 

 large pale dots, 7-8 mm. in diameter; calyx prominent, with a short 

 tube, a deep narrow cavity pointed in the bottom, and small recurved 

 persistent lobes; flesh thin, yellow, soft and succulent; nutlets 2 or 3, 

 full and rounded at the ends, slightly ridged on the back, with a low 

 narrow ridge, penetrated on the inner faces by broad shallow cavities, 

 5-5.5 mm. long and about 4 mm. wide. 



A shrub 2-3 m. high, with several stout nearly straight stems, and 

 glabrous branchlets light orange-green and marked by pale lenticels 

 when they first appear and light chestnut brown and very lustrous 

 the following season, and armed with numerous slender straight or 

 slightly curved purple shining spines 4.5-5.5 cm. long and com- 

 pounded and persistent on old stems. 



Hillsides at the base of Campbell's Ledge, near Scranton, Luzerne 

 County, A. Twining, (No. 36 type) June 8 and September 28, 1907. 



5. Crataegus sucoulenta Link. 



Handbook, II, 76 (1831); Sargent, Silva N. Am., XIII, 139, t. 131; Proc. 

 Rochester Acad. Sci., IV, 133; Man., 497, f. 411; Proc. Acad. Nat. Sci. 

 Phila., 1905, 75; Bull. U. S. State Mus., CV, 72, CXXII, SO; Ont. Nat. 

 Sci. Bull., 1908, 92. 



Township west of Carnot, Allegheny County, J. E. Shafer, (No. 

 E 4) May 21 and October 17, 1902; also southern Ontario and western 

 New York to southern New England and eastern Pennsylvania. 



6. Crataegus vaga n. sp. 



Leaves obovate, acute or rounded and often abruptly short-pointed 

 at' the apex, cuneate at the entire base, finally often doubly serrate 

 above, with straight glandular teeth, and very slightly divided above 

 the middle into 3 or 4 pairs of small acute lobes; less than half grown 

 when the flowers open late in May and then thin, yellow-green, 

 smooth, lustrous, and slightly hairy along the midribs above and light 

 blue-green and sparingly villose along the midribs and veins below, and 

 at maturity thick, dark yellow-green, very lustrous and glabrous on 

 the upper surface, still slightly hairy below on the stout conspicuous 

 midribs and primary veins, 4.5-6 cm. long and 3.5-4.5 cm. wide; 

 petioles stout, narrowly wing-margined to below the middle, slightly 

 hairy on the upper side, soon becoming glabrous, often red in the 

 autumn, 1-1.5 cm. in length. Flowers 1.6-1.8 cm. in diameter, on 

 long slender pedicels furnished with occasional white hairs, in narrow 



