Flora of North America species comparison

1–3(or 4);

bark gray to bronze;

winter buds purple, ovoid to ovoid-conic, 5–15 mm, dull, not glutinous, usually densely villous, hairs whitish, rarely rufous, outer scales sometimes merely ciliate.

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 deciduous or persistent, whitish-villous or glabrate;

blade paler or often whitish abaxially, dull green to bluish green adaxially, leaflets 11–17(–19), opposite, oblong to oblong-lanceolate or oblanceolate, (2.5–)3–6(–7.5) × 1.5–2 cm, l/w ratio 2.4–3.7, margins serrate at least in distal 1/2, often almost to base, apex acute to obtuse, abaxial surface white-tomentose to villous at flowering, indument often persisting, at least along midveins, leaflet axils, and petiole bases, hairs usually whitish, sometimes 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.

75–200+-flowered, flat-topped or rounded, 6–18 cm diam.;

peduncles ± whitish-villous.

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

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

densely whitish-villous.

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

8–11 mm diam.;

hypanthium densely villous, hairs whitish, hypanthium plus sepals 2.9–3.2 mm;

sepals 0.5–1 mm, margins often glandular;

petals white, orbiculate, (3–)4–5 mm;

stamens 15–20;

carpels 1/2 adnate to hypanthium, apex conic, styles 3 or 4, 1.5–3 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 densely villous.

glabrous, glaucous, or villous.

yellow or orange-red to red, globose to subglobose, 8–12 mm diam., shiny or dull, slightly glaucous or not;

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.

brown, ovoid to ovoid-lanceoloid, 3–4.5 × 1.5–2 mm, 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.

= 34.