Flora of North America species comparison

ascending, branched at base, herbaceous throughout.

erect, unbranched proximal to inflorescence.

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.

mostly opposite, appressed-erect;

stipular glands absent;

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

open panicles.

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

5–10 mm.

0.5–2.9 mm, stout.

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, 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-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, 2.6–3 × 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.

1.5–3 × 0.9–1.3 mm.

not seen.

= 30.

= 36.