8o NEW YORK STATE MUSEUM 
Crataegus obstipa n. sp. 
Glabrous. Leaves rhombic, acute at the ends, finely serrate with 
straight glandular teeth and slightly divided above the middle into 
two or three pairs of short, broad lobes ; about one-half grown when 
the flowers open early in June and then yellow-green and paler 
below than above, and at maturity thin, yellow-green, smooth and 
lustrous on the upper surface, pale on the lower surface, 4 to 4.5 cm 
long and 2.5 to 3 cm wide, with thin midribs and primary veins; 
petioles slender, narrowly wing-margined to the middle, 4.5 to 6 cm 
in length; stipules linear, glandular, bright red, deciduous before 
the flowers open; leaves on vigorous shoots thicker, more coarsely 
serrate and more deeply lobed, and sometimes 5 cm long and 4 cm 
wide. Flowers on slender pedicels, in five- or six-flowered corymbs, 
the lower peduncles from the axils of upper leaves; calyx-tube 
broadly obconic, the lobes separated by wide sinuses, gradually nar- 
rowed from the base, slender, acuminate, entire or minutely glandu- 
lar-dentate near the middle; stamens twenty ; anthers matoon; styles 
three to five. Fruit ripening early in October on slender drooping 
pedicels, obconic, rounded at the apex and at the narrow base, crim- 
son, marked by large pale dots, pruinose, 1.3-1.5 cm long and 1 to 
1.2 cm in diameter ; calyx prominent, with a short tube, a deep nar- 
row cavity pointed in the bottom, and spreading erect lobes; flesh 
thin, hard and dry; nutlets three to five, thin and rounded at the 
ends, broader at the apex than at the base, ridged on the back, 
with a broad, grooved ridge, 6 to 7.5 mm long and 5 mm wide, the 
narrow hypostyle extending to just below the middle of the nutlet. 
A shrub 3 or 4 m high, with ascending stems and branches cov- 
ered with dark gray bark, and thin zigzag contorted branchlets dark 
green and marked by pale lenticels when they first appear, orange- 
brown at the end of their first season and dull gray-brown the fol- 
lowing year, and armed with very numerous straight chestnut-brown 
shining spines 1.5 to 3 cm long, persistent and compound on old 
stems and branches. 
Open pastures in heavy soil, near Chapin, Ontario county, 
B. H. Slavin (no. 21, type), October 3, 1908; May 29, 1909. 
Crataegus beata Sargent 
Proc. Rochester Acad. Sci. IV. 97 (19003); N. Y. State Mus. Bull. 122. 
85 (1908). 
Ithaca, Chapin, near Rochester, Hemlock lake, Canadice lake, 
Belfast, Portage, Castile, Coopers Plains; common. 
