Flora of North America species comparison

erect, branched at base and in inflorescence.

ascending to erect from decumbent base, 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.

alternate throughout or proximal opposite, divergent, erect or spreading;

stipular glands absent;

blade narrowly lanceolate, 5–25 × 1–3 mm, thick (basal leaves), margins entire, not ciliate, apex rounded to subacute; 1-nerved.

panicles, with ascending to spreading branches.

panicles or thyrses.

0–3 mm.

1–5 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 or broadly oblong, 2.5–4.5 mm, margins not scarious, inner glandular-toothed, outer entire or sparsely glandular-toothed near apex, apex acute to ± obtuse, not acuminate;

petals bright yellow, oblanceolate to obovate, 5–12 mm;

stamens 3–8 mm;

anthers 1.5–2.5 mm;

staminodia absent;

styles distinct, 4–7 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-pyriform, 2.3–4 × 2.8–3.6 mm, apex pointed (easily crushed), freely dehiscing into 10, 1-seeded segments, segments persistent on plant, false septa incomplete, proximal margins ciliate.

1.2–1.9 × 0.7–1.1 mm.

2–2.7 × 1–1.4 mm.

= 36.

= 26.