Flora of North America species comparison

stiffly ascending-spreading, few to many-branched.

stiffly spreading-ascending, branched at base and distal to middle.

alternate, appressed;

stipular glands present at basal nodes or throughout;

blade linear, 7–20 × 0.5–l.9 mm, margins entire, not ciliate, apex aristate.

alternate or proximalmost opposite, crowded at base, appressed-ascending;

stipular glands absent;

blade oblanceolate to lanceolate or linear-lanceolate, 8–17 × 1.2–2.3 mm, margins entire, not ciliate, apex apiculate.

racemes.

few-flowered racemes.

3–15 mm.

(5–)20–30(–60) mm.

sepals deciduous, lanceolate to narrowly ovate, 4–7 mm, margins scarious, delicately glandular-toothed, apex aristate;

petals yellow to yellow-orange throughout, oblanceolate to narrowly obovate, 5–10 mm;

stamens (3–)4–7 mm;

anthers 0.4–1 mm;

staminodia present or absent;

styles connate nearly to apex, 2–5.7 mm;

stigmas green, capitate.

sepals persistent, lanceolate to lance-ovate, 4.5–7 mm, margins narrowly scarious, inner sepals conspicuously toothed, outer ones very coarsely glandular-toothed, sometimes sparsely so, apex acuminate or narrowly acute;

petals lemon yellow, obovate, 9–15 mm;

stamens 5–7 mm;

anthers 1–2 mm;

staminodia absent;

styles connate to within 0.8–3 mm of apex, 5.7–9 mm;

stigmas capitate.

ovoid, 3.2–4.5 × 2.5–3.4 mm, relatively thick-walled and with characteristic thickened areas at apex in region of true septa, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins ciliate.

ovoid (distinctly longer than broad), 3.5–4.6 × 2.5–3.1 mm, apex sharp-pointed, dehiscing completely into 5, 2-seeded segments (very easily crushed), segments persistent on plant, false septa incomplete, proximal margins terminating in loose fringe, cartilaginous plates at base of segments poorly developed.

2–3 × 0.8–1.3 mm.

2.5–3 × 0.9–1.2 mm.

= 30.