Flora of North America species comparison

erect to ascending, unbranched proximally, few to many branches above middle, conspicuously sulcate.

ascending or sometimes decumbent at base, usually freely branched.

proximal 0–13 pairs opposite (often fallen at anthesis), distal alternate, appressed-ascending;

stipular glands usually present, very rarely absent;

blade linear to narrowly lanceolate, 7–30 × 1–3 mm, margins entire, distal leaves not ciliate, apex acute to subulate;

midrib prominent, marginal nerves less conspicuous.

blade linear to lanceolate or narrowly elliptic, 10–30 × 2–3(–7) mm.

open panicles;

bracts glandular-toothed, not ciliate.

cymes, few-flowered.

1.3–4.7 mm.

10–25 mm.

sepals persistent, lanceolate, (3.1–)3.6–5(–7.3) mm, inner sepals more delicate than outer, shorter, margins not scarious, all very conspicuously glandular-toothed, apex acuminate, central and marginal veins conspicuous;

petals pale yellow, obovate, 5–10 mm;

stamens 3.3–5.7 mm;

anthers 0.3–0.7 mm;

staminodia absent;

styles connate 0.2–1.8 mm at base, 2–4.5 mm;

stigmas capitate.

heterostylous;

sepals lanceolate, 7–11 mm, margins glabrous, apex acuminate;

petals bright red to maroon, fading to purple, broadly obovate, 15–30 mm;

stamens 8–10 mm;

anthers 5 mm;

staminodia not seen;

styles connate proximal 1/2, 4.5 mm (short-styled) or 8–10 mm (long-styled);

stigmas clavate.

globose, 2.5–3.3 × 2.1–3 mm, apex rounded to acute, dehiscing freely into 10, sharp-pointed, 1-seeded segments;

segments persistent on plant, false septa incomplete, margins prominently ciliate.

ovoid-globose, 6–7 mm diam., apex apiculate, segments persistent on plant, margins not seen.

1.6–2.1 × 0.8–1.1 mm.

2–3 × 0.5–1 mm.

= 30.

= 16.