Flora of North America species comparison

erect, branched at base and in inflorescence.

erect, unbranched proximal to 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.

mostly opposite, appressed-erect;

stipular glands absent;

blade elliptic to oblanceolate, cauline leaves 13–17 × 3–4 mm, margins entire, apex obtuse to acute.

panicles, with ascending to spreading branches.

of few, few-flowered panicles, branches spreading-ascending, occupying to 1/4 or less of total height.

0–3 mm.

0.5–2.9 mm, stout.

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, inner ones broadly obovate, outer ovate, 3.1–3.6 mm, margins not scarious, inner glandular-toothed, outer entire, apex acute to acuminate;

petals pale to bright yellow, ovate, 6–7 mm;

stamen length unknown;

anther length unknown;

staminodia absent;

styles distinct, 2–3.1 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.

subglobose, 2.6–3 × 2.8–3 mm, apex abruptly short-pointed, dehiscing into 10, 1-seeded segments, segments falling freely, false septa nearly complete, ± spongy, proximal margins not ciliate.

1.2–1.9 × 0.7–1.1 mm.

not seen.

= 36.

= 36.