Flora of North America species comparison

ascending, branched at base, herbaceous throughout.

erect or spreading, few-branched.

alternate or sometimes proximal leaves opposite, appressed-ascending;

stipular glands present (conspicuous);

blade linear, 7–20 × 0.6–1.5 mm, margins entire or distal leaves sparsely glandular-toothed, ciliate, apex acute; 1-nerved.

alternate, spreading to ascending;

stipular glands absent;

blade linear-lanceolate to narrowly elliptic, 5–10 × 1–1.5 mm, margins entire, not ciliate, apex acuminate.

open panicles.

panicles.

5–10 mm.

1–5 mm.

sepals falling tardily, lanceolate, 4–7 mm, margins of inner sepals scarious, glandular-toothed, apex acute to acuminate, puberulent at least on midrib;

outer 3-nerved;

petals yellowish orange to salmon, with maroon or reddish base, obcordate or broadly obovate, 9–15 mm;

stamens 4–7 mm;

anthers 0.6–1.4 mm;

staminodia absent;

styles connate nearly to apex, 3–7 mm;

stigmas dark, capitate.

sepals persistent, lanceolate to ovate, 3–4 mm, margins of inner sepals broadly scarious, densely glandular-ciliate, glandular-toothed, apex acuminate to setaceous;

petals lemon yellow, oblong to obovate, 4–6 mm;

stamens 1.5 mm;

anthers 0.3 mm;

staminodia present or absent;

styles distinct, 1 mm;

stigmas linear.

ovoid-ellipsoid, 3.5–4 × 2.5–5 mm, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal margin not terminating in loose fringe, distal part cartilaginous, margins ciliate.

subglobose, 2 mm diam., apex sharp-pointed (easily crushed), readily dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa incomplete, margins of true septa ciliate.

1.5–3 × 0.9–1.3 mm.

1.1 × 0.9–1 mm.

= 30.

= 20.