Flora of North America species comparison

with terminal end buds, glabrous.

with axillary end buds, canescent.

deciduous;

petiole 5–10(–15) mm, not winged, glabrous, sometimes glandular distally, glands 1–4, discoid;

blade oblong to lanceolate, folded along midribs, often falcate, (5–)7–15 × 2–4.5 cm, base cuneate to obtuse, margins crenulate-serrulate, teeth blunt, glandular, apex acuminate, surfaces glabrous.

deciduous;

petiole 0.5–3(–5) mm, hairy, eglandular;

blade ovate, obovate, or spatulate, 0.5–2(–3) × 0.2–1(–2) cm, base cuneate to obtuse, margins irregularly serrate, teeth usually sharp, eglandular, sometimes blunt, obscurely glandular, apex obtuse to rounded, often mucronate, surfaces hairy.

usually solitary flowers, sometimes 2-flowered fascicles.

solitary flowers or 2-flowered fascicles.

0–3 mm, glabrous.

0–3 mm, puberulent.

blooming before leaf emergence;

hypanthium cupulate, 4–5 mm, glabrous externally;

sepals spreading, oblong-ovate, 3.5–5 mm, margins entire, ciliate, abaxial surface hairy (especially along margins), adaxial glabrous;

petals dark pink, obovate to suborbiculate, 10–17 mm;

ovaries hairy.

unisexual, plants dioecious, blooming at leaf emergence;

hypanthium campanulate, 2–4 mm, hairy externally;

sepals erect, triangular, 1–2 mm, margins entire, sparsely ciliate, abaxial surface densely hairy, adaxial glabrous or slightly hairy;

petals white, elliptic, rhombic, ovate, or suborbiculate, 2.5–6 mm, abaxial surfaces hairy;

ovaries hairy.

yellow to orange tinged with red, globose, 40–80 mm, velutinous (glabrous in nectarines);

mesocarps fleshy;

stones ellipsoid, strongly flattened, deeply pitted, furrowed.

yellowish orange, obovoid to ovoid, 9–16 mm, velutinous;

mesocarps leathery to dry;

stones subglobose to ovoid, slightly flattened.

= 16.