Flora of North America species comparison

single or multistemmed;

bark gray;

winter buds brownish to purple, ovoid to ovoid-conic, 4–10 mm, dull, not glutinous, densely white-villous, at least distally and on scale margins.

1;

bark gray;

winter buds green to red-brown, ovoid, 5–12 mm, shiny, slightly glutinous, whitish-villous.

proximally pinnately compound, lobed distally;

stipules deciduous or persistent, often white-villous;

blade paler green abaxially, dull green adaxially, ovate to oblong-ovate, rarely oblong, 7–13 × 5–11 cm, pinnately lobed with (1 or)2(or 3) pairs of sessile or decurrent, free, oblong leaflets, terminal leaflets 7–10-lobed, margins serrate at least distally, lobe and leaflet apex acute or obtuse, lateral veins 7–10 pairs, abaxial surface whitish-tomentose.

simple;

stipules early deciduous, densely whitish-villous;

blade shiny, green to dark green adaxially, ovate to elliptic, 6–13 × 3.5–8.5 cm, margins proximally 4–7 pinnately lobed, lobes ± oblong, 1–1.5(–1.8) cm wide, basal sinuses deepest, margins distally coarsely serrate, main pairs of secondary veins 8–10, apex acute to obtuse, abaxial surface white-tomentose, adaxial glabrous or sparsely villous, indument usually persistent.

25–75-flowered, flat-topped or rounded, 4.5–10 cm diam.;

peduncles white-villous.

18–85-flowered, rounded, 6–17 cm diam.;

peduncles white-tomentose.

white-villous.

white-tomentose.

10–15 mm diam.;

hypanthium tomentose, hypanthium plus sepals 5–7.5 mm;

sepals 1.5–4 mm, margins usually entire, rarely with inconspicuous glands;

petals white, suborbiculate, broadly obovate, broadly ovate, or broadly elliptic, 5–7 mm;

stamens 20;

carpels 1/2 adnate to hypanthium, apex conic, styles 2 or 3, 2–3 mm.

14–16 mm diam.;

hypanthium whitish-tomentose, hypanthium plus sepals 5–6 mm;

sepals 1.5–2.5 mm, margins villous and eglandular, rarely with inconspicuous glands;

petals white, elliptic to broadly ovate, 5–7 mm;

stamens 20;

carpels distinct, apex conic, styles 2, 2.5–4 mm.

glabrate to villous.

thinly white-tomentose to glabrate.

red, globose to subglobose, 8–15 mm diam., shiny, not glaucous;

sepals inconspicuous, incurved.

bright red, ellipsoid, sometimes narrowly obovoid, 7–16 × 6–11 mm, shiny, faintly glaucous;

lenticels few;

sepals inconspicuous, erect, villous toward apex.

red-brown, ovoid, 5–6 × 2 mm, asymmetric, slightly flattened.

red-brown, narrowly ovoid, 6–6.5 × 2.5–3.1 mm, slightly asymmetric, slightly flattened.

= 68.

= 68 (Europe).