540 MALACEAE 
11. Crataegus viridis L. A tree often 6-10 m. tall, with gray or reddish brown fis- 
sured and frequently exfoliating bark. Leaf-blades ovate-lanceolate, elliptic or oblong- 
obovate, rarely ovate, 2-7 cm. long, 2-4 cm. wide, or larger on the shoots, acute or bluntly 
pointed at the apex, narrowed or abruptly contracted at the base, irregularly serrate and 
often with acute or blunt shallow lobes, glabrous or with tufts of pale hairs in the axils 
of the veins beneath: corymbs compound, many-flowered, glabrous: corolla 10-14 mm. 
wide: stamens normally 20: fruit globose or subglobose, 4-7 mm. in diameter, red or 
orange-red when ripe: nutlets usually 5, the hypostyle three-fourths as long as the ventral 
angle. 
In low grounds and moist woods, Virginia and North Carolina to Florida, Texas and Missouri. 
12. Crataegus paludósa Sarg. A small tree 4-5 m. tall, with gray or reddish 
brown bark, or more frequently a large shrub with several stems and spiny branches. Leaf- 
blades oval, elliptic, obovate or oblanceolate, or on the shoots ovate, 2-4 cm. long, 7-30 mm. 
wide, mostly acute at the apex, cuneate, contracted or on the shoots rounded at the base, 
glabrous or with tufts of pale hairs in the axils of the veins beneath, serrate, occasionally 
cleft or incised, especially on vigorous shoots: corymbs several-many-flowered : stamens 
about 20, the anthers purple : fruit subglobose or short-oval, 5-8 mm. in diameter, red or 
orange-red at maturity : nutlets 3-5, the hypostyle three-fourths the length of the ventral 
angle. 
In low grounds and on banks of streams, Volusia County, Florida. 
13. Crataegus subviridis Beadle. A tree 6-8 m. tall, with gray bark. Leaf-blades 
ovate, obovate or oval, 2.5-6 cm. long, 1-4 cm. wide, or larger on the shoots, acute or 
acuminate, rarely rounded at the apex, contracted or narrowed at the base, or on the shoots 
rounded and truncate, glabrous or glabrate when fully grown, the borders serrate and in- 
cisely lobed : corymbs compound, many-flowered, pilose-pubescent: pedicels and hypan- 
thium sparsely pilose : sepals narrowly lanceolate, entire or minutely serrate, pubescent on 
the inner surface, at least at flowering time: corolla 12-15 mm. wide: stamens normally 
20: fruit globose, 5-7 mm. in diameter: nutlets 3-5, about 5 mm. long, the hypostyle 
three-fourths as long as the nutlet. 
In low woods and on banks of streams, Chattahoochee, Florida. 
14. Crataegus intérior Beadle. A small tree about 5 m. tall, with dark gray flaky 
bark. Leaf-blades ovate, ovate-lanceolate or oblong, 2-6 cm. long, 1-4 em. wide, glabrous 
or glabrate when old, acute or acuminate at the apex, rounded or abruptly contracted at 
the base, the borders serrate and deeply incised ; petioles margined, slightly hairy on the 
upper surface, at least when young: corymbs compound, many-flowered, glabrous: pedi- 
cels, hypanthium and exterior surface of the sepals glabrous: corolla about 15 mm. wide: 
stamens usually 20, the anthers yellow: fruit globose, bright red at maturity, 7-8 mm. 
wide: nutlets 3-5, about 5 mm. long, the hypostyle occupying about two-thirds of the 
ventral angle. 
In flat woods, near Chattanooga, Tennessee. 
15. Crataegus vülsa Beadle. A tree4-6 m. high, with a trunk 1-2 dm. in diameter, 
clothed with gray or brownish fissured bark. Leaf-blades ovate, oval or round-ovate, 
1.5-7 em. long, 1-6 em. broad, glabrous or with a few hairs along the veins and in their 
axils, sharply and irregularly serrate and incised, acuteat the apex, either rounded or 
abruptly narrowed at the base into margined petioles : corymbs glabrous, compound, 3-10- 
flowered: pedicels, hypanthium and exterior surface of the nearly or quite entire sep 
glabrous: corolla about 15 mm. wide: stamens normally 20, the anthers pale yellow or 
nearly white: fruit globose, 7-9 mm. in diameter, at maturity yellow-green flushed with 
red : nutlets 3-5, about 5.5 mm. long. 
retos flat woods and on banks of streams, northeastern Alabama to Floyd County, northwestern 
ia. 
. 16. Crataegus Brazória Sarg. A tree about 6 m. tall, with a trunk 1.5 dm. in 
diameter and ashy gray scaly bark. Leaf-blades 4-6 cm. long, 2-3.5 em. wide, oval or eee 
vate, acute or acuminate at the apex, cuneate or narrowed, or on vigorous shoots rounde a 
the base, coarsely serrate above the middle, glabrous when fully grown ; petioles wingec, 
peni, at least when young: corymbs compound, many-flowered, pilose : peer 
ypanthium and the lanceolate-acuminate sepals pilose-pubescent: corolla M 
mm. wide: stamens 20, the small anthers dark red : fruit subglobose or short oval, when 
ripe 6-7 mm. in diameter, bright canary-yellow : nutlets usually 5, about 6 mm. long. 
In the valley of the Brazos River, Brazoria, Texas. 
runk 2 
17. Crataegus silvícola Beadle. A tree 6-10 m. tall and sometimes with a e: vis 
dm. in diameter covered with a close or slightly fissured and scaly bark. Leaf-bla a 
ovate, round ovate, or on vigorous shoots deltoid, 2-7 em. long, 2-6 cm. wide, glabrous 
