Flora of North America species comparison

erect, branched at base and in inflorescence.

ascending to erect, branched from base.

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.

proximalmost opposite, distal alternate, imbricate throughout, proximal leaves spreading to ascending, distal closely appressed;

stipular glands absent;

blade awl-shaped, 5–10 × 0.5–1 mm, margins entire, distalmost narrowly scarious, not ciliate, apex of proximal leaves sharp-pointed, distal with short, slender terminal awn.

panicles, with ascending to spreading branches.

panicles;

bracts not ciliate.

0–3 mm.

3–15 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 ovate, 4.5–7 mm, margins broadly scarious, entire, or sparsely delicately toothed or, in age, ± lacerate, not glandular-toothed, apex conspicuously awn-tipped;

petals yellow, with or without dark red base, obovate, 8–12 mm;

stamens 5 mm;

anthers 1–1.6 mm;

staminodia absent;

styles connate to 0.3–1.1 mm of apex, 2.7–6.3 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.

broadly ovoid, 2.7–3.5 × 2.8–3.6 mm, apex rounded, dehiscing into 5, 2-seeded segments, segments persistent plant, false septa entirely hyaline, or with very narrow, uniform, distal cartilaginous portion, margins tomentose near apex.

1.2–1.9 × 0.7–1.1 mm.

2–2.7 × 1–1.2 mm.

= 36.

= 30.