Flora of North America species comparison

erect, branched at base and in inflorescence.

ascending to erect, branched at base and in inflorescence.

opposite near base or alternate throughout, appressed-ascending;

stipular glands present;

blade linear to linear-lanceolate, 8–20 × 0.5–2.1 mm, margins entire or with scattered minute marginal glands, not ciliate, apex acute; 1-nerved.

alternate or proximal leaves opposite, divergent to ascending;

stipular glands usually present, sometimes absent;

blade linear, 8–17 × 0.5–1.3 mm, margins entire, with widely spaced glandular hairs, apex acute.

panicles, with ascending to spreading branches.

open panicles.

0–3 mm.

2–12 mm.

sepals persistent, lanceolate to ovate, 2.5–5 mm, margins of inner sepals narrowly scarious, conspicuously glandular-toothed, apex acute or acuminate;

petals lemon yellow, oblanceolate or narrowly obcordate, 7–11 mm;

stamens 2–8 mm;

anthers 0.5–1 mm;

staminodia present;

styles distinct, 3–6.5 mm;

stigmas capitate.

sepals persistent, lanceolate to narrowly lanceolate, 4–7.5 mm, margins narrowly scarious or not, inner sepals abundantly glandular-toothed, outer sparsely toothed, apex narrowly acute;

petals yellow-orange to salmon with maroon base, broadly obovate, 10–17 mm;

stamens 4–8 mm;

anthers 1–1.8 mm;

staminodia absent;

styles connate to within 0.2 mm of apex, 4–8 mm;

stigmas capitate.

ovoid, 2–3 × 2–2.5 mm, apex sharp-pointed, dehiscing readily into 10, 1-seeded segments, segments falling freely, false septa incomplete, false and true septa margins ciliate.

ovoid, 3–4 × 2.5–3.2 mm, apex depressed, dehiscing completely into 5, 2-seeded segments (very easily crushed), segments persistent on plant, false septa incomplete, proximal margins terminating in loose fringe.

1.2–1.9 × 0.7–1.1 mm.

2–2.8 × 0.9–1.3 mm.

= 36.

= 30.