CRATAEGUS IN ROCHESTER, NEW YORK. 1 33 



Crataegus succulenta, Link. Sargent, Silva N. Am. xiii. 139, 

 t. 131. 



Rochester, C. C. Laney, May 31, 1900, C. S. Sargent, Sep- 

 tember 18, 1900, John Dunbar, June and October 1901 ; Niagara 

 Falls, C. S. Sargent, September 1900; Rush, N. Y., M. S. Baxter 

 ^.nd foil }i Dunbar, June 1902. 



Crataegus gemmosa. Sargent, Bot. Gazette, xxxiii. 119 (1902); 

 Si/va iW Ai?i. xiii. 141, t. 686. 



Rochester ; rare ; Genesee Valley Park, Jo/ui Dunbar and C. C. 

 Laney, June and October, 1901. 



Crataegus Deweyana, n. sp. 



Leaves ovate, acuminate or abruptly long pointed at the apex, 

 abruptly narrowed and concave-cuneate at the entire often unsymmet- 

 rical base, coarsely doubly serrate above, with straight or incurved 

 gland-tipped teeth, and slightly divided often only abo\-e the middle 

 into several pairs of small acuminate spreading lobes ; about a third 

 grown when the flowers open and then membranaceous, dark yellow- 

 green and covered with short lustrous white hairs on the upper sur- 

 face and light yellow-green and glabrous on the lower surface ; at 

 maturity thin, yellow-green and scabrate above, pale below, 8-10 cm. 

 long, 5-7 cm. wide, with stout orange colored midribs deeply impressed 

 on the upper side, and 6 or 7 pairs of thin primary veins arching 

 obliquely to the points of the lobes : petioles stout, wing-margined 

 at the apex by the decurrent base of the leaf-blades, deeply grooved, 

 sparingly villose along the upper side, soon glabrous, glandular with 

 occasional minute dark glands, usually dull orange color in the 

 autumn, 2-3 cm. in length ; on vigorous leading shoots more deeply 

 lobed and more closely serrate than on fertile branchlets, subcoria- 

 ceous, often 10 cm. long and 9 cm. wide, gradually narrowed into 

 stout broadly winged coarsely glandular petioles, their stipules foliace- 

 ous, stipitate, lunate, sharply lobed, glandular-serrate, with minute 

 dark red glands, sometimes 1.5 cm. long, persistent through the 

 season. Flowers 1-1.2 cm. in diameter, on slender pedicels in wide 

 lax many-flowered thin-branched slightly \-illose compound corymbs ; 

 calyx narrowly obconic, often villose at the base, glabrous above, the 

 lobes slender, elongated, acuminate, finely glandular-serrate usually 

 only above the middle, dark green and glabrous on the outer surface, 

 villose on the inner surface, reflexed after anthesis ; stamens 7-10, 



