1905] Sargent, Recently Recognized Species of Crataegus 179 
open; calyx-tube narrowly obconic, glabrous, the lobes wide, lacini- 
ately glandular-serrate, with bright red glands, glabrous on the outer, 
puberulous on the inner surface; stamens 7-10 ; anthers pale yellow 
or greenish white; styles 2 or 3, surrounded at the base by a narrow 
ring of pale hairs. Fruit ripening at the end of September, on long 
slender pedicels, in many-fruited drooping clusters, oval, greenish 
yellow mottled with crimson, lustrous, 8-10 mm. long and 7-8 mm. 
wide; calyx prominent, with a short tube, a broad deep cavity, and 
. reflexed coarsely serrate lobes, their tips mostly deciduous from the 
ripe fruit; flesh thin and dry; nutlets 2 or 3, full and rounded at the 
base and gradually narrowed and rounded at the apex, rounded and 
only slightly ridged on the back, penetrated on the inner faces by 
large deep cavities, about 7 mm. long and 5 mm. wide. 
A broad shrub 3-4 m. high, with numerous stems and stout nearly 
straight branchlets, dark orange-yellow and glabrous when they first 
appear, light chestnut-brown and lustrous during their first winter and 
dull brown tinged with red the following year, and armed with many 
stout straight or slightly curved purplish ultimately shining spines 
4-6 cm. long. 
Dry banks of pond holes near the coast of Long Island Sound, 
Stratford, Fairfield County, Connecticut, Æ. H. Hames (no. 137 type), 
May, June and September, 1901. 
Crataegus pellucidula, n. sp. Leaves oval to obovate-oblong, 
acute, gradually narrowed to the concave-cuneate entire base, finel y 
doubly serrate above, with straight or incurved glandular teeth, and 
slightly divided into short acute lateral lobes, more than half grown 
when the flowers open about the 1st of June and then membranaceous, 
light yellow-green, slightly roughened by short white hairs and villose 
along the midribs above and pale and glabrous below with the excep- 
tion of a few short hairs along the primary veins and in their axes, 
and at maturity thin but firm in texture, glabrous, yellow-green, 
smooth and lustrous on the upper and pale on the lower surface, 6-7 
. cm. long and 4-5 cm. wide, with stout yellow midribs often tinged 
with rose color toward the base, and thin primary veins extending 
obliquely to the points of the lobes; petioles slender, wing-margined 
at the apex, deeply grooved and puberulous while young on the 
upper side, soon glabrous, 1-1.5 cm. in length. Flowers on stout 
elongated villose pedicels, in lax many-flowered compound villose 
corymbs, with linear obovate glandular bracts and bractlets, fading 
brown and mostly deciduous before the flowers open; calyx-tube 
broadly obconic, covered at the base with matted pale hairs, nearly 
glabrous above, the lobes wide, foliaceous, acuminate, laciniately 
glandular-serrate ; stamens 10; anthers cream color; styles 2 or 3. 
Fruit ripening the end of September, on drooping slender reddish 
pedicels, in flat many-fruited clusters, subglobose, scarlet, very lus- 
