Flora of North America species comparison

with terminal end buds, glabrous.

with axillary end buds, canescent.

persistent;

petiole 5–8 mm, glabrous, eglandular;

blade narrowly elliptic to elliptic or oblanceolate, 5–10 × 1.5–4 cm, base cuneate to obtuse, margins entire or spinose-serrate, sometimes undulate, teeth sharp, eglandular, apex usually acute to short-acuminate, sometimes obtuse-apiculate, apicula acute, surfaces glabrous, abaxial glandular, glands 2, proximal, flat, circular to oval.

deciduous;

petiole 1–2(–6) mm, glabrous, eglandular;

blade elliptic or obovate, 0.5–1.6(–3.5) × 0.3–0.8(–2.1) cm, base cuneate, margins usually entire, sometimes irregularly serrulate (sometimes dentate on long shoots), teeth sharp to blunt, eglandular, some callus-tipped, apex usually obtuse to rounded, sometimes apiculate, surfaces glabrous.

12–30-flowered, racemes;

central axes 13–30(–43) mm, leafless at bases.

solitary flowers.

1–4 mm, glabrous.

0–2 mm, puberulent.

usually bisexual, proximal sometimes staminate, blooming before leaf emergence;

hypanthium cupulate, 2.5–3 mm, glabrous externally;

sepals spreading, semicircular, 0.5–1 mm, margins usually entire, sometimes glandular-toothed, surfaces glabrous;

petals white, suborbiculate to elliptic, 1–1.5 mm;

ovaries glabrous.

unisexual, plants dioecious, blooming at leaf emergence;

hypanthium campanulate, 2–3 mm, glabrous externally;

sepals spreading, triangular, 0.7–1.5 mm, margins entire, surfaces glabrous;

petals white, obovate, 2–3.5 mm;

ovaries hairy.

black, ovoid, 9–12 mm, glabrous;

mesocarps leathery;

stones ovoid, not flattened, usually splitting open.

reddish brown, globose to ovoid, 9–12 mm, puberulent;

hypanthium tardily deciduous;

mesocarps leathery to dry (slightly splitting);

stones ovoid to subglobose, not flattened.

= 32.