1910.] NATURAL SCIENCES OF PHILADELPHIA. 235 



stems covered with dark gray bark, and spreading into thickets, and 

 slender slightly zigzag branchlets, dark orange-green and marked by 

 pale lenticels when they first appear, becoming light chestnut brown 

 and lustrous in their first season and dull red-brown the following 

 year, and armed with only occasional slender straight chestnut brown 

 shining spines 2-2.5 cm. long and sometimes persistent and branched 

 on old stems. 



Schenley Park, Pittsburg, Allegheny County, 0. E. Jennings, 

 (No. 56 type) May 27, 1906, May 17 and June 8, 1907, 0. E. Jennings, 

 October 5, 1907. 



This beautiful and distinct plant is named for Miss Grace E. Kinzer^ 

 now Mrs. Jennings, the intelligent and zealous assistant of her husband 

 in his botanical labors. 



6. Crataegus intricata Lange. 



Bot, Tidskr., XIX, 246 (1894); Sargent, Rhodora, III, 28; Bull. No. CV 

 N. Y. State Mus., 67, No. CXXII, 104. 



Hillside above Bedford Springs, Bedford County, B. H. Smith and 

 €. S. Sargent, (No. 16) May 26, 1908; also New England to western 

 New York. 



7. Crataegus apposita Sargent. 



Bot. Gazette, XXXV, 103 (The Genus Crataegus in Newcastle County, 

 Delaware) (1903); Proc. Acad. Nat. Sci. Phila., 1905, 643. 



Keyser Valley, Scranton, Lackawanna County, A. Twining (No. 

 52) June 13, 1907, September 20, 1908; also in Berks, Bucks and 

 Delaware Counties; and in Newcastle County, Delaware. 



■8. Crataegus confusa n. sp. 



Crataegus circur Ashe, Ann. Carnegie Mus., I, pt. 3, 397 (in so far as relates 

 to Pittsburg, Pennsylvania) (1902). 



Leaves rhombic to oval, acuminate at the ends, finely often doubly 

 serrate, with straight or incurved glandular teeth, and slightly divided 

 usually only above the middle into 3 or 4 pairs of short broad acuminate 

 lobes; about one-third grown when the flowers open late in May or 

 early in June, and then very thin, light yellow-green and roughened 

 -above by short white hairs and paler and sparingly villose on the 

 midribs below, and at maturity thin, yellow-green and scabrate on 

 the upper surface, pale and almost glabrous on the lower surface, 

 4-6 cm. long and 3-5 cm. wide, with thin prominent midribs and 

 primary veins; petioles slender, narrowly wing-margined nearly to 

 the middle, densely villose early in the season, becoming nearly 

 glabrous, glandular, with numerous persistent glands, 1.2-2 cm. in 

 length; leaves on vigorous shoots thicker, concave-cuneate at the 



