Flora of North America species comparison

with terminal end buds, glabrous or hairy.

with terminal end buds, sparsely hairy.

deciduous;

petiole 4–22(–27) mm, usually glabrous, sometimes hairy, glandular distally, glands 2, discoid;

blade obovate or elliptic to ovate or oblanceolate, 2.5–9(–11) × 1.2–5(–6.6), base cuneate to rounded or subcordate, margins serrulate to serrate, teeth ascending to spreading, usually sharp, eglandular, sometimes callus-tipped, obscurely glandular, lateral veins 6–13 per side, raised abaxially, apex acuminate, acute, or obtuse, abaxial surface glabrous or hairy (especially along midribs), adaxial glabrous.

deciduous;

petiole 10–20 mm, hairy, sometimes glandular distally, glands 1–2;

blade elliptic-ovate to obovate, 5–12 × 2.5–7 cm, base rounded, margins doubly serrate, teeth aristate, glandular, apex acuminate, abaxial surface hairy along midribs and veins, adaxial glabrous.

18–64-flowered, racemes;

central axes (18–)40–110(–130) mm, leafy at bases.

2–6-flowered, corymbs;

central axes 4–8(–20) mm.

2–8(–16) mm, usually glabrous, rarely hairy.

15–25 mm (subtended by leafy bracts), hairy.

blooming after leaf emergence;

hypanthium cupulate, 1.5–3 mm, glabrous externally;

sepals erect-spreading to reflexed, semicircular, 0.7–1.4 mm, margins erose, usually glandular-toothed, sometimes nearly eglandular, surfaces glabrous;

petals white, obovate to suborbiculate, 2–5(–7) mm;

ovaries glabrous.

blooming before leaf emergence;

hypanthium tubular, 7–8 mm, hairy externally;

sepals spreading, ovate-lanceolate, 4–5 mm, margins glandular-toothed, abaxial surface hairy, adaxial sparsely hairy;

petals white or pink, broadly elliptic to obovate, 13–15 mm;

ovaries glabrous.

red, purple, dark purple, or black, globose, 6–14 mm, glabrous;

hypanthium deciduous, leaving discs at bases of drupes;

mesocarps fleshy;

stones subglobose to ellipsoid, not flattened, ± smooth.

black, subglobose, 7–12 mm, glabrous;

mesocarps fleshy;

stones ellipsoid, not flattened.

= 16 (Japan).