§ 2. ADENÒRHACHIS. Leaves simple, the midrib glandular along the upper side; cymes compound; styles united at base; fruit berry-like, small.
3. P. arbutifòlia, L. f. (Choke-berry.) A shrub usually 1–3° high; leaves oblong or oblanceolate, mostly acute or acuminate, finely glandular-serrate, tomentose beneath; cyme tomentose; flowers white or reddish; fruit pear-shaped, or globose when ripe, small, red or purple, astringent.—Swamps and damp thickets; common, from N. Scotia to Fla., and west to Minn., Ill., Mo., and La.
Var. melanocárpa, Hook. Nearly smooth throughout, with larger black fruit; leaves usually less acute.—Of apparently the same range.
§ 3. SÓRBUS. Leaves odd-pinnate, with rather numerous leaflets; cymes compound; styles separate; pome berry-like, small.
4. P. Americàna, DC. (American Mountain-Ash.) Tree or tall shrub, nearly glabrous or soon becoming so; leaflets 13–15, lanceolate, taper-pointed, sharply serrate with pointed teeth, bright green; cymes large and flat; berries globose, bright red, not larger than peas; leaf-buds pointed, glabrous and somewhat glutinous.—Swamps and mountain-woods, Newf. to mountains of N. C., west to N. Mich, and Minn. Often cultivated.
5. P. sambucifòlia, Cham. & Schlecht. Leaflets oblong, oval, or lance-ovate, mostly obtuse or abruptly short-pointed, serrate (mostly doubly) with more spreading teeth, often pale beneath; cymes smaller; flowers and berries larger, the latter (4´´ broad) when young ovoid, at length globose; leaf-buds sparingly hairy; otherwise nearly as the preceding.—Lab. to northern N. Eng. and Lake Superior, and westward.
17. CRATÆ̀GUS, L. Hawthorn. White Thorn.
Calyx-tube urn-shaped, the limb 5-cleft. Petals 5, roundish. Stamens many, or only 10–15. Styles 1–5. Pome drupe-like, containing 1–5 bony 1-seeded stones.—Thorny shrubs or small trees, with simple and mostly lobed leaves, and white (rarely rose-colored) blossoms. (Name from κράτος, strength, on account of the hardness of the wood.)
[*] Corymbs many-flowered.
[+] Fruit small, depressed-globose (not larger than peas), bright red; flowers mostly small; calyx-teeth short and broad (except in n. 3); styles 5; glabrous (except C. Pyracantha) and glandless.