1903] Sargent,— Recently Recognized Species of Crataegus 163 
A broad round-topped very intricately branched shrub rarely extend- 
ing 3 metres in height with slender zigzag branchlets light green more 
or less tinged with red when they first appear, orange or reddish brown 
during their first season, becoming dull gray-brown in their second 
year and armed with numerous nearly straight slender spines from 3 
to 6 cm. in length. Flowers at the end of May. Fruit ripens late 
in September. 
PROVINCE OF QUEBEC: lime stone ridges near the shores of Lake 
St. Lawrence; Caughnawaga, May 1900, May and September r9or, 
May 1902, Highlands, May and September 1901; St. Ann, May 
and September 1902, 7. G. Jack. 
Crataegus Aboriginum, n. sp. Glabrous with the exception 
of a few long pale caducous hairs on the upper surface of the young 
leaves. Leaves ovate to rhombic, concave-cuneate at the entire 
glandular base, finely and often doubly serrate, with incurved teeth 
tipped with small red glands, and more or less deeply divided above 
the middle into broad acute lobes; membranaceous, pale yellow-green 
and almost glabrous when the flowers open; at maturity thin but firm 
in texture, dark yellow-green and lustrous on the upper surface, pale 
yellow-green on the lower surface, 5—6 cm. long, 3.5-5 cm. wide, with 
stout often rose-colored midribs and 3 or 4 pairs of slender veins 
arching obliquely to the points of the lobes; petioles stout, narrowly 
wing-margined and grooved nearly to the middle, glandular with 
minute dark glands mostly toward the apex, often rose-color late in 
the season, about 2 cm. in length; stipules linear and acuminate to 
lanceolate, coarsely glandular-serrate, sometimes 1-2 cm. in length, 
caducous. Flowers about 1.4 cm. in diameter on long slender 
pedicels, in thin-branched rather compact many flowered compound 
corymbs ; bracts and bractlets very large and conspicuous, oblong- 
obovate, acute, sometimes falcate, coarsely glandular-serrate, mostly 
deciduous before the flowers open; calyx-tube broadly obconic, the 
lobes abruptly narrowed from the base, broad, acuminate, coarsely 
glandular-serrate, reflexed after anthesis; stamens 10; anthers pale 
yellow ; styles 2—4. Fruit in drooping few-fruited clusters, subglo- 
bose to short-oblong, full and rounded at the ends, dark red, slightly 
pruinose, about 1.4 cm. long; calyx enlarged with a broad deep 
cavity and foliaceous coarsely serrate lobes dark red on the upper 
side near the base, usually erect and incurved, 7-9 mm. in length ; 
flesh thin, hard, green and bitter; nutlets full and rounded at the 
ends, thick, ridged on the back, with a broad rounded often grooved 
ridge, about 9 mm. in length. 
A broad shrub with stems about 3 m. in height and very stout 
branchlets marked by oblong pale lenticels, dark orange-green when 
they first appear, bright red-brown and lustrous during their first 
