1905] Sargent, Recently Recognized Species of Crataegus 163 
and rounded at the base, narrowed and rounded at the apex, ridged 
on the back, with a low slightly grooved ridge irregularly penetrated 
on their inner faces by usually large deep cavities, 6-7 mm. long and 
about 5 mm. wide. 
A tree 3-4 m. high, with a tall stem 5-8 m. in diameter covered with 
dark scaly bark, short thick erect rigid branches forming an open 
irregular head, and stout slightly zigzag branchlets marked by small 
oblong pale lenticels, dark orange-green and glabrous when they first 
appear, becoming light red or purplish and very lustrous in their first 
season and ultimately dull gray-brown, and armed with stout usually 
straight purplish shining spines generally pointed toward the base of 
the branch and 5-6 cm. long. 
Rocky hillsides, Wolf Pen Farm, Southborough, Worcester County; 
Massachusetts, C. S. Sargent, May, September and October, 1904. 
This handsome plant, which is one of the most distinct of the spe- 
cies of this group and one of the most beautiful of the New England 
Thorns, is named for Miss Helen Sears of Southborough. 
Crataegus pisifera, n. sp. Leaves rhombic to oblong-obovate 
on vigorous shoots, acute or acuminate, gradually narrowed to the 
cuneate entire base, finely doubly serrate, above with straight glandu- 
lar teeth and slightly divided above the middle into numerous short 
acute lobes, nearly fully grown when the flowers open during the last 
week of May and then thin, yellow-green, lustrous, smooth and gla- 
brous above with the exception of a slight pubescence along the 
midribs, and pale and clothed below along the base of the primary 
veins with short persistent hairs, and at maturity coriaceous, conspic- 
uously reticulate-venulose, dark yellow-green and lustrous on the 
upper and pale on the lower surface, 5-7 cm. long and 4-5 cm. 
wide, with stout yellow midribs deeply impressed on the upper side 
and 5 or 6 pairs of slender primary veins extending obliquely to the 
points of the lobes; petioles stout, wing-margined to the middle, 
puberulous on the upper side while young, becoming glabrous, some- 
times slightly tinged with rose color, 1—1.5 cm. in length. Flowers 
1.3—1.5 cm. in diameter, on slender elongated slightly villose pedicels, 
in wide compound many-flowered corymbs, with oblong-obovate to 
linear acute glandular bracts and bractlets fading brown and often 
persistent until the flowers open; calyx-tube narrowly obconic, the 
lobes wide, acuminate, incisely glandular-serrate, glabrous on the 
outer, pubescent on the inner surface, reflexed after anthesis; sta- 
mens 20; anthers minute, light pink; styles 2 or 3. Fruit ripening 
at the end of September and remaining on the branches until the fol- 
lowing spring, on slender reddish erect or spreading pedicels, in 
many-fruited clusters, hard, subglobose, crimson, lustrous, marked by 
occasional pale dots, 6-8 mm. in diameter; calyx prominent, with a 
