Flora of North America species comparison

short to elongate.

short.

usually solitary, sometimes loosely tufted, (3–)4–9 dm;

base (1–)2–4 mm diam., moderately to densely septate-glandular.

usually solitary, sometimes tufted, (1–)3–10 dm;

base 3–6 mm diam., ± densely, sometimes sparsely, septate-glandular.

sparsely to moderately hairy;

basal (7–)10–25(–30) cm, leaflet pairs 3–4;

terminal leaflet broadly obovate, 2–5(–6) × 1.5–3.5(–4) cm, teeth single or double, 6–11 per side, apex usually rounded, sometimes obtuse;

cauline 1–3, proximally well developed, leaflet pairs 2–4.

usually moderately to densely hairy;

basal (6–)12–40 cm, leaflet pairs (3–)4–5;

terminal leaflet broadly elliptic-obovate, (2–)4–10 × (1–)2–4.5 cm, teeth mostly double, 15–30+ per side, apex obtuse to acute;

cauline 2–3, relatively well developed, leaflet pairs 2–4.

10–20(–40)-flowered, not leafy, open, 1/4–2/3 of stem, narrow, branch angles 10–30°.

10–40-flowered, not leafy, congested, sometimes more elongate in fruit, 1/10–1/5(–1/3) of stem, narrow, branch angles 5–20°.

2–8 (proximal to 20) mm, predominantly short-hairy, sparsely to moderately septate-glandular.

1–5 (proximal to 15) mm, densely short-hairy, septate-glandular.

opening widely;

epicalyx bractlets linear to narrowly elliptic, 2–4 × 0.5–1 mm;

sepals spreading, 5–8 mm, apex acute to acuminate;

petals overlapping or not, spreading, cream-white to pale yellow, broadly obovate, 4–6 × 3–6 mm, usually longer than, sometimes equal to, sepals;

filaments 1.5–2.5(–3) mm, anthers 0.8–1 mm;

styles thickened, 0.8–1.2 mm.

opening widely;

epicalyx bractlets ± elliptic, 4–6(–8) × 1–2 mm;

sepals spreading, (5–)7–10 mm, apex obtuse to acute, apiculate;

petals overlapping, spreading, cream-white to yellowish, broadly elliptic, (5–)7–9 × (5–)6–8 mm, ± equal to or slightly longer than sepals;

filaments 1.5–2.5 mm, anthers 0.7–1 mm;

styles thickened, 1 mm.

light brown, 0.7–1 mm.

light brown, 1 mm.

= 14.

= 14.