34 NEW YORK STATE MUSEUM 



A tree sometimes 7 m high, with a short trunk 2-2.5 ^^ i^ diam- 

 eter, erect branches forming a broad open head, and stout zigzag 

 glabrous branchlets, light orange-yellow and marked by large pale 

 lenticels when they first appear, becoming light orange color and 

 lustrous in their first season, and armed with numerous nearly 

 straight or curved spines 2.5-6 cm long and becoming dark gray or 

 purple in their second or third seasons. 



Brighton, near Rochester, B. H. Slavin (^2, type), October 

 14, 1903, and June 4, 1905. 



Crataegus dewingii n. sp. 



Leaves ovate to oval or rarely orbicular, ^ acuminate, abruptly 

 concave-cuneate at the entire base, finely doubly serrate above, with 

 straight glandular teeth, and very slightly divided above the middle 

 into 4 or 5 pairs of small acuminate lobes; deeply tinged with 

 red when they unfold, about half grown when the flowers open at 

 the end of May and then thin, yellow-green and glabrous with the 

 exception of a few caducous hairs along the upper side of the 

 midribs, and at maturity thin but firm in texture, dark green and 

 lustrous on the upper surface, pale bluish green on the lower sur- 

 face, 5-7 cm long and 4-5 cm wide, with stout yellow midribs, and 

 thin primary veins arching obliquely to the points of the lobes; 

 petioles slender, wing-margined at the apex, villose on the upper 

 side while young, slightly glandular, 2.5-3 cm in length; leaves on 

 vigorous shoots often oblong-ovate, more coarsely serrate, deeply 

 divided into broad lateral lobes and 5-6 cm long. Flowers 1.8-2 

 cm in diameter, on slender glabrous pedicels, in 4-13-flowered lax 

 corymbs, with broadly obovate to linear-obovate caducous bracts and 

 bractlets fading brown ; calyx-tube broadly obconic, glabrous, the 

 lobes abruptly narrowed from the base, broad, acuminate, entire or 

 slightly serrate near the middle, glabrous on the outer, sparingly 

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

 anthers pink; styles 4 or 5, surrounded at the base by a narrow ring 

 of pale tomentum. Fruit ripening from the middle to the end of 

 September, on stout red pedicels, in few-fruited drooping clusters, 

 shoirt-oblong, full and rounded at the ends, crimson, pruinose, 

 becoming lustrous, marked by many small pale dots, 1-1.2 cm in 

 diameter ; calyx little enlarged, with a broad deep cavity, and spread- 

 ing often incurved persistent lobes villose on the upper side; flesh 

 thin, hard, dry and mealy; nutlets 4 or 5, gradually narrowed and 

 rounded at the ends, ridged on the back, with a high narrow ridge, 

 7-8 mm long, and 4-5 mm wide. 



