Flora of North America species comparison

densely branched basally; purple-tinged;

glandular-pubescent.

profusely branched; glabrate or puberulent (bark corky, twigs smooth).

(stipules scalelike, minute, obscured by pubescence);

petiole 1.5–4.5 cm;

leaflets 3, blade flat, ovate to obovate, 1–3.5 × 0.5–1.3 cm, margins serrulate-denticulate or entire, apex obtuse, surfaces glandular-pubescent.

petiole 1–3 cm;

leaflets 3, blade oblong-elliptic, 1.5–4.5 × 0.4–1.3 cm, margins serrate, apex acuminate to obtuse, surfaces glaucous.

1–3.5 cm (5–40 cm in fruit);

bracts unifoliate, obovate to spatulate, 3–25 mm.

1–3 cm (6–40 cm in fruit);

bracts unifoliate, obovate to spatulate, 2–15 mm.

7–17 mm.

7–15 mm (thickened in fruit).

sepals deciduous, distinct, yellow, awl-shaped, (3–)4–5(–6) × 3–7 mm, margins entire, densely glandular-hairy;

petals golden yellow, oblong, 6–12 × 0.3–0.4(–0.6) mm;

stamens yellow, 10–17 mm;

anthers 1.8–2 mm;

gynophore 10–18 mm in fruit;

ovary (compressed), 3.5–5 mm;

style 1–3 mm.

sepals persistent, connate ca. 1/2 of length, green, lanceolate, 4–7 × 2.2–4 mm, margins entire, glabrous;

petals yellow, ovate-elliptic, 8–14 × 4.2–5 mm, (apex acute);

stamens yellow, 15–25 mm;

anthers 2–2.5 mm;

gynophore (reflexed), 10–20 mm in fruit;

ovary 3–6 mm (often aborting in bud);

style 0.9–1.2 mm.

(pendent) not inflated, 12–25 × 8–12 mm, striate, (glandular-pubescent).

(tardily dehiscent), usually inflated,(valves sometimes 3), 20–30 × 6–12 mm, smooth.

10–20, brownish black, spheroidal, 3–3.2 mm, (glossy) smooth.

5–25, dark brown, obovoid, 6–7 × 5–6 mm, smooth.

= 40.