Flora of North America species comparison

with terminal end buds, glabrous.

with terminal end buds, hairy.

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 5–10 mm, hairy, glandular distally or on margins at bases of blades;

blade elliptic, oblong-ovate, or ovate, 3–8 × 1.5–4 cm, base obtuse, margins doubly serrate, teeth sharp, glandular, apex acuminate, abaxial surface hairy along midribs and veins, adaxial glabrous or with appressed hairs along midrib.

usually solitary flowers, sometimes 2-flowered fascicles.

2–5-flowered, umbellate fascicles.

0–3 mm, glabrous.

8–22 mm, hairy.

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.

blooming before leaf emergence;

hypanthium tubular to tubular-urceolate, 4–7 mm, hairy externally;

sepals erect to spreading, oblong-ovate, 2–5 mm, margins toothed, sometimes glandular, abaxial surface sparsely hairy, adaxial glabrous;

petals pale pink, oblong to obovate, 8–12 mm;

ovaries glabrous.

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

mesocarps fleshy;

stones ellipsoid, strongly flattened, deeply pitted, furrowed.

black, subglobose, 8 mm, glabrous;

mesocarps fleshy;

stones ellipsoid, not flattened.

= 16.

= 24 (Japan).