CRATÆGUS CALPODENDRON (Ehrhart) Medicus. Pear-thorn. (× 1/2.)]

=8. Crataegus Calpodéndron= (Ehrhart) Medicus. Pear-thorn. Pear or Red

Haw. Plate 84. Bark pale gray to dark brown, furrowed; spines

occasional, slender 3-5 cm. (1-1/4-2 inches) long; leaves rhombic-ovate,

4-11 cm. (1-1/2-4-1/2 inches) long, 3-8 cm. (1-1/4-3 inches) wide, acute

or acuminate at the apex, finely and doubly serrate, those on the

vegetative shoots obtuse and more entire than the others, pubescent on

both sides, becoming scabrate above, subcoriaceous, dull green above;

petioles about 2 cm. (3/4 inch) long, wing margined, glandular hairy;

corymbs white-tomentose, many flowered; flowers appear in June, about

1.5 cm. (2/3 inch) broad; stamens about 20; anthers small, pink; styles

and nutlets usually 2 or 3; calyx lobes lanceolate-acuminate, glandular

laciniate; fruit ripens in September, pyriform to ellipsoidal,

orange-red or red, 8-10 mm. (1/3 inch) thick, flesh glutinous; nutlets

with deep pits in their inner faces; calyx lobes reflexed.

=Distribution.=--Central New York, northeastern New Jersey to Minnesota

and Missouri and south in the mountains to northern Georgia.

A large shrub or occasionally a tree 6 m. (20 feet) high, with ascending

branches forming a broad crown.

Specimens have been examined from the following counties: Boone (Deam);

Floyd (Deam); Hancock (Mrs. Chas. C. Deam); Harrison (Deam); Marion

(Mrs. Chas. C. Deam); Posey (Deam); Putnam (Grimes); Tippecanoe (Stanley

Coulter); Wells (Deam); White (Deam); Whitley (Deam).

=9. Crataegus chrysocárpa= Ashe. (_Crataegus Dodgei_ Sargent. _Crataegus

rotundifolia_, Borckhausen.) Round-leaved Thorn. Plate 85. Bark dark

red-brown, scaly; spines numerous, chestnut-brown, curved, 2-5 cm. (1-2

inches) long; leaves ovate-orbicular or obovate, 3-6 cm. (1-1/4-2-1/4

inches) long, 2-6 cm. (3/4-2-1/4 inches) wide, acute at the apex,

broadly cuneate at the base, doubly serrate with rather coarse teeth and

with 3 or 4 pairs of acute lobes, subcoriaceous, dark yellow-green and

shining above, slightly pubescent or glabrous; corymbs glabrous or

slightly pubescent; flowers 10-15 mm. (1/2-3/4 inch) wide; stamens 5-10;

anthers light yellow; styles and nutlets usually 3-4; calyx lobes

lanceolate, acuminate, usually entire, but glandular margined; fruit

depressed-globose to short ovoid, about 10 mm. (1/2 inch) thick, flesh

soft; calyx lobes reflexed.

=Distribution.=--Nova Scotia and New Brunswick to Saskatchewan, south to

Nebraska and Pennsylvania and in the mountains to North Carolina and New

Mexico.

Round topped shrub or tree sometimes 8 meters (25 feet) high.

Specimens have been seen from the following counties: Delaware and

Lagrange (Deam).

[Illustration: Plate 85.

Trees of Indiana First Revised Edition (Publication No. 13, Department of Conservation, State of Indiana) · 第 136 / 265 题