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.

1–8;

bark initially reddish purple to brownish gray, becoming grayish red;

winter buds red-purple to red-brown, conic to ovoid, 8–13 mm, dull, slightly glaucous, not glutinous, sparsely or densely villous, hairs primarily 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.

pinnately compound;

stipules persistent, sometimes deciduous, hairs rufous;

blade paler abaxially, dull blue-green, usually slightly glaucous, rarely faintly shiny adaxially, leaflets 7–13, opposite, sometimes subopposite, oblong to narrowly elliptic, sometimes oblanceolate, ovate, or obovate, 1.8–6 × 0.6–2.5 cm, l/w ratio 1.9–3.5, margins entire or finely to coarsely serrate, sometimes doubly serrate, apex obtuse or acute, surfaces soon glabrous, leaf and leaflet axils hairy, hairs rufous.

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

peduncles glabrous or sparsely hairy.

12–80-flowered, rounded, 2–8 cm diam.;

peduncles glabrous, glaucous, or sparsely to densely villous, hairs primarily rufous.

glabrous or sparsely hairy; fruiting pedicels essentially glabrous.

glabrous, glaucous, or sparsely to densely villous, hairs primarily rufous.

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.

11–17 mm diam.;

hypanthium glabrous, glaucous, hypanthium plus sepals 3–4 mm;

sepals 1–2.2 mm, margins lightly to moderately ciliate, hairs rufous or whitish, infrequently glandular;

petals white, rarely pinkish, rhombic to ovate, 4–7.5 mm;

stamens 15–20;

carpels distinct, apex concave, depressed, or slightly conic and truncate, styles 3–5, 1.5–3.2 mm.

glabrous or nearly so.

glabrous, glaucous, or villous.

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

sepals inconspicuous, incurved.

pinkish red or red (often appearing slightly purplish), subglobose to broadly elliptic or obovoid, 7–13 × 7–13 mm, dull, glaucous;

sepals inconspicuous, incurved.

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

red-brown, ovoid to ovoid-lanceolate, oblong or elliptic, 3.4–5 × 2.2–2.9 mm, symmetric or trigonous, slightly flattened.