1903] Sargent,— Recently recognized Species of Crataegus 113 
pale yellow-green and scabrate on the upper surface and paler on 
the lower surface; at maturity thin but firm in texture, light yellow- 
green and almost smooth above, pale yellow-green below, 7—10 cm. 
long, 6-9 cm. wide, with slender yellow midribs and thin remote 
primary veins arching to the points of the lobes; petioles slender, 
nearly terete, often furnished above the middle with occasional min- 
ute dark glands, frequently tinged with red in the autumn, 2.5-3 cm. 
long. Flowers 2-2.3 cm. in diameter on slender pedicels, in small 
thin-branched s-:2-flowered glabrous compound corymbs; bracts 
and bractlets linear to ovate, glandular-serrate, small, caducous ; 
calyx-tube narrowly obconic, the lobes narrow, elongated, acuminate. 
coarsely glandular-serrate mostly only near the middle, bright red at 
the apex, reflexed after anthesis; stamens usually s, rarely 6 or 7, 
small, deep rose-color; styles 3. Fruit in few-fruited erect or droop- 
ing clusters, oblong to obovate, full and rounded at the ends, crim- 
son, lustrous, 1.1-1.2 cm. long, about 1 cm. wide; calyx cavity deep 
and shallow, the lobes erect and incurved, often deciduous from the 
ripe fruit; nutlets 3, thin, acute at the ends, slightly and irregularly 
ridged on the back, 6 mm. long. 
A tree 6 or 7 m. in height with a trunk rarely more than 1 dm. in 
diameter covered with gray bark separating into thin flakes near the 
ground and smooth above, long slender erect and spreading branches 
forming an open irregular head, and stout nearly straight branchlets 
marked by many small oblong pale lenticels, green more or less 
tinged with red when they first appear, bright reddish brown and 
lustrous during their first season, darker red-brown the following 
year, and slightly armed with stout straight red-brown shining spines 
2-4 cm. in length. Flowers about May 2oth. Fruit ripens at the 
end of September. 
Connecticut: Oak woods, Rumford’s Point, Groton, close to the 
shore of Long Island Sound, C. B. Graves, May and September, 
1902 ; and probably at Oxford, Æ. B. Harger, May and September, 
I9OI. 
Crataegus Thayeri, n. sp. Glabrous with the exception of the 
hairs on the upper surface of the young leaves. Leaves ovate to 
obovate, acute, gradually narrowed from near the middle and con- 
cave-cuneate at the entire base, sharply doubly serrate above, with 
straight gland-tipped teeth, and divided into numerous narrow acumi- 
nate lateral lobes; tinged with red when they unfold and covered 
above with short pale hairs, and membranaceous when the flowers 
open, and then dark yellow-green, lustrous and scabrate on the upper 
surface and pale on the lower surface; at maturity dark green, lus- 
trous and smooth above, pale below, 5-6 cm. long, 3.5-4.5 cm. wide, 
with stout yellow midribs deeply impressed above like the 5—7 pairs of 
