Flora of North America species comparison

1–8;

bark dark gray;

winter buds red to brown, shiny, conic, 5–12 mm, slightly glutinous, sparsely hairy except along scale margins and apex, hairs rufous.

pinnately compound;

stipules often persistent, margins rufous-hairy;

blade pale abaxially, shiny, green adaxially, leaflets 7–9(–11), opposite or subopposite, oblong to elliptic, sometimes narrowly elliptic, 2.5–4.1(–4.5) × 0.9–2 cm, l/w ratio 2.1–2.6, margins finely to coarsely serrate, sometimes doubly serrate, apex obtuse to acute, surfaces soon glabrous, leaflet axils and petiole bases hairy, hairs rufous.

25–120+-flowered, rounded, 3–11 cm diam.;

peduncles glabrous or sparsely hairy.

glabrous or sparsely hairy; fruiting pedicels essentially glabrous.

9–10 mm diam.;

hypanthium glabrous, hypanthium plus sepals 3 mm;

sepals 0.7–1.5 mm, margins ciliolate, hairs whitish, irregularly glandular;

petals white, broadly ovate, 3–4 mm;

stamens 20;

carpels distinct, apex conic, styles 3 or 4, 1.5–2 mm.

glabrous or nearly so.

bright red, globose to subglobose, 6–9 mm diam., shiny if glaucous layer is rubbed off;

sepals inconspicuous, incurved.

red-brown, lanceolate, 4 × 2 mm, slightly asymmetric, slightly flattened.