Flora of North America species comparison

1–3, decumbent or ascending to erect, ca. 1/2 subterranean, glabrous or puberulent, from single, short, vertical, deep-seated caudex.

1–6, ascending to erect, leafy proximally and distally, ca. 1/2 subterranean, puberulent, on caudex from usually vertical, subligneous rhizome.

basal and cauline;

basal: 1–6, bipinnately compound, leaflets 3–5;

stipules adnate to petiole forming 2 linear-lanceolate wings, unlobed, margins entire, apex of each wing free, acute to acuminate;

petiole 5–6.8 cm, glabrous or puberulent;

blade ovate, 3.5–5 × 2.4–3.5 cm, base tapered, leaflets 3–5-lobed, lobes linear, narrowly elliptic, or oblong, 1–2.5(–5) mm wide, margins entire, usually densely ciliate, apex acute to obtuse, mucronulate, surfaces glabrous or puberulent;

cauline similar to basal except: stipules ovate to linear-lanceolate, margins entire or toothed, apex acute;

petiole 0.9–4 cm;

blade 1.1–4.1 × 1–3.6 cm.

basal and cauline;

basal: 1–6;

stipules adnate to petiole, forming 2 linear-lanceolate wings, margins entire, apex of each wing free, acute, few-toothed or lobed;

petiole 2–17 cm, glabrous or minutely puberulent;

blade lanceolate, ovate, or elliptic, 1–9 × 0.6–2.5 cm, base attenuate, margins entire or serrulate, sometimes sinuate, ciliate, apex acute to obtuse, mucronulate, surfaces glabrous or puberulent;

cauline similar to basal except: stipules adnate to or free from petiole, linear to linear-lanceolate or linear-oblong, sometimes leaflike, margins usually entire, rarely laciniate or glandular, apex acute to acuminate;

petiole 2–7 cm;

blade 1.4–7.2(–10) × 1.1–2.3 cm, length 1.3–4.4 times width, apex acute.

2–12.5 cm, glabrous or puberulent.

3–13 cm, glabrous or puberulent.

sepals lanceolate, margins ciliate, auricles 0.5–1.5 mm;

petals light golden yellow adaxially, upper 2 dark brown to ± black abaxially, lower 3 dark brown-veined, lateral 2 bearded, lowest 8–21 mm, spur dark greenish to dark brown, gibbous, 1.5–2 mm;

style head bearded; cleistogamous flowers absent.

sepals linear-lanceolate, margins eciliate, auricles 0.5–1 mm;

petals deep lemon-yellow adaxially or on both surfaces, upper 2 often brownish purple abaxially, lower 3 dark brown- to brownish purple-veined, lateral 2 sparsely bearded, lowest 6–13 mm, spur yellow, gibbous, 0.5–1.5 mm;

style head bearded; cleistogamous flowers axillary.

spherical to oblong, 5–12 mm, glabrous.

subglobose to ovoid, 4–10 mm, usually glabrous, rarely finely puberulent.

light brown, 2.8–3.3 mm.

medium brown, 2–3.2 mm, elaiosome extending over 1/3 length of seed and completely covering funiculus.

= 24, 48.

= 24.