Flora of North America species comparison

deciduous;

petiole 4–12 mm;

blade ovate-elliptic, 2.5–10 × 1.5–3.5 cm, base attenuate to broadly cuneate, margins minutely denticulate, apex acuminate.

deciduous;

petiole 3–5 mm;

blade obovate, 2–8 × 1.5–4.5 cm, base attenuate, margins crenate-serrate, apex acute or acuminate.

axillary, 1–7(–15)-flowered.

terminal or axillary, 1–5-flowered.

sepals 4;

petals 4, yellow or white, oblong, 3–4 × 1–2 mm;

stamens 4;

ovary smooth.

sepals 5;

petals 5, pale green, often suffused with purple, round, 2–3 mm diam.;

stamens 5;

ovary spiny.

pink, obovoid, 8–10 × 12–15 mm, deeply (2–)4-lobed, rarely only 1 lobe developing, lobes clearly connate, surface smooth.

pink, subglobose, 10–12 mm diam., unlobed or very shallowly 4–5-lobed, lobes clearly connate, surface spiny.

obovoid, 7–8 × 4–5 mm;

aril orange or yellow.

subglobose, 4.5–5.5 mm;

aril bright orange.