Flora of North America species comparison

with axillary end buds, glabrous or canescent.

with terminal end buds, sparsely hairy.

deciduous;

sessile;

blade oblanceolate to linear, 0.5–2 × 0.1–0.2(–0.4) cm, base long-attenuate, margins nearly entire or obscurely and remotely serrulate in distal 1/3, teeth blunt to sharp, sometimes glandular, apex rounded to acute, surfaces puberulent or glabrous or low-papillate (var. punctata).

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.

solitary flowers or 2-flowered fascicles.

2–6-flowered, corymbs;

central axes 4–8(–20) mm.

0–4 mm, glabrous.

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

unisexual, plants dioecious, blooming at leaf emergence;

hypanthium campanulate, 1.5–3 mm, glabrous externally;

sepals erect-spreading, triangular, 0.7–1 mm, margins entire, surfaces glabrous;

petals white to yellowish, elliptic, obovate, or suborbiculate, 1.4–2.5(–4) mm;

ovaries hairy.

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.

gray to red-brown, ovoid, ± compressed, 7–15 mm, densely puberulent;

hypanthium tardily deciduous;

mesocarps leathery to dry;

stones ovoid, ± flattened.

black, subglobose, 7–12 mm, glabrous;

mesocarps fleshy;

stones ellipsoid, not flattened.

= 16 (Japan).