Flora of North America species comparison

stiffly spreading-ascending, branched at base and distal to middle.

stiffly spreading-ascending, slender, broomlike, branched throughout.

alternate or proximalmost opposite, crowded at base, appressed-ascending;

stipular glands absent;

blade oblanceolate to lanceolate or linear-lanceolate, 8–17 × 1.2–2.3 mm, margins entire, not ciliate, apex apiculate.

alternate or proximalmost opposite, proximal leaves spreading, distal leaves appressed-ascending;

stipular glands usually present;

blade linear, 5–20 × 0.3–1.1 mm, margins entire, not ciliate, apex acute.

few-flowered racemes.

diffuse panicles, branches relatively long, stiffly spreading-ascending.

(5–)20–30(–60) mm.

6–30 mm, slender.

sepals persistent, lanceolate to lance-ovate, 4.5–7 mm, margins narrowly scarious, inner sepals conspicuously toothed, outer ones very coarsely glandular-toothed, sometimes sparsely so, apex acuminate or narrowly acute;

petals lemon yellow, obovate, 9–15 mm;

stamens 5–7 mm;

anthers 1–2 mm;

staminodia absent;

styles connate to within 0.8–3 mm of apex, 5.7–9 mm;

stigmas capitate.

sepals deciduous, outer linear-lanceolate, 5.5–9 mm, apex attenuate, inner somewhat broader, shorter, margins narrowly scarious, glandular-toothed, apex awn-tipped;

petals faintly maroon at base, otherwise yellow to yellow-orange throughout, obovate, 8–12 mm;

stamens 5–7 mm;

anthers 0.7–1.1 mm;

staminodia absent;

styles connate nearly to apex, 4.5–7 mm;

stigmas capitate.

ovoid (distinctly longer than broad), 3.5–4.6 × 2.5–3.1 mm, apex sharp-pointed, dehiscing completely into 5, 2-seeded segments (very easily crushed), segments persistent on plant, false septa incomplete, proximal margins terminating in loose fringe, cartilaginous plates at base of segments poorly developed.

narrowly ellipsoid, 3.5–4.5 × 2.5–3 mm, thin-walled, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins not, or only sparsely, ciliate.

2.5–3 × 0.9–1.2 mm.

2.5–3 × 0.8–1 mm.

= 30.

= 30.