Flora of North America species comparison

often decumbent, spreading, reddish brown becoming dark gray, glabrous or sparsely stellate-hairy.

5–20, ascending to erect, branches erect proximally, somewhat sinuous;

bark buff to reddish brown or black, usually peeling in narrow strips; short shoots present;

buds superposed, each with ca. 5 exposed brown scales.

stipules linear to narrowly elliptic or subulate, 4–5 × 1 mm, base attenuate, apex acute;

petiole 0.5–2.2 cm;

blade broadly ovate, 1.5–4 × 2–4.5 cm, sometimes wider than long, base usually truncate to cordate, rarely broadly cuneate, 0 or 1–5-lobed, margins doubly crenate to doubly serrate, apex rounded to obtuse, surfaces glabrous or sparsely stellate-hairy.

deciduous, cauline;

stipules caducous, decurrent on stem, leaving oblique, broadly ovate to rectangular stubs, linear or oblong to narrowly ovate, obovate, or elliptic, sometimes rhombic, margins sometimes remotely glandular-dentate, surfaces sparsely stellate-hairy (glabrous adaxially in P. monogynus);

petiole present;

blade broadly ovate to obovate or orbiculate, 0.5–10 cm, membranous, margins flat, crenate to doubly crenate or doubly dentate, 3–5(–7)-lobed, rarely almost unlobed, 3–5(–7)-veined, surfaces glabrous or sparsely to densely stellate-hairy.

10(–15)–30-flowered, fairly dense, hemispheric racemes, 4 cm diam.;

bracts linear to narrowly elliptic or narrowly obovate, 2–4 mm, apex acute, rarely 2-fid.

terminal or axillary on leafy short shoots, 5–50-flowered, open to dense corymb- or umbel-like pedunculate racemes;

bracts present;

bracteoles absent.

8–18 mm, sparsely to moderately stellate-hairy.

present.

8–10 mm diam.;

hypanthium cup-shaped, 1.7–2 mm, sparsely to moderately stellate-hairy;

sepals triangular to ovate, 3 mm, apex gland-tipped, surfaces sparsely to moderately stellate-hairy;

petals white, broadly elliptic to orbiculate, 4.5 × 4 mm;

stamens 20–40, ± equal to petals;

carpels (1)2(3), connate at least 1/2 their lengths, densely stellate-hairy.

5–12 mm diam.;

hypanthium cup-shaped to campanulate, 1.5–3 mm, exterior stellate-hairy;

sepals 5, ascending to slightly reflexed, triangular to ovate;

petals 5, white to pale pink, broadly obovate, elliptic, or orbiculate, base short-clawed, sometimes irregularly toothed or notched;

stamens 20–40, shorter than, equal to, or exceeding petals;

carpels 1–5;

styles slender, stigmas capitate;

ovules 2–5.

aggregated follicles, sometimes solitary, 1–5, ovoid, often ± inflated, slightly flattened, size not recorded, splitting along both sutures;

hypanthium persistent;

sepals persistent, ascending to slightly reflexed.

1–3, pyriform, 2–2.5 mm.

1(–5), shiny yellow, carunculate.

(1)2(3), inflated, 2.5 mm (lengths shorter than sepals), densely stellate-hairy, hairs white;

styles 3.5 mm.

= 9.

= 18.