Flora of North America species comparison

stiffly ascending-spreading, few to many-branched.

erect, usually unbranched below inflorescence, sometimes branched at base.

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, spreading;

stipular glands present or absent;

blade linear, 15–30 × 0.6–1.4 mm, margins entire or distalmost glandular-toothed, not ciliate, apex long-attenuate.

racemes.

ascending or spreading cymes.

3–15 mm.

4.5–9 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 deciduous, lanceolate, inner sepals slightly shorter than outer, outer ones 4.5–7 mm, margins of inner sepals narrowly scarious, all glandular-toothed, apex short-awned;

petals orange-yellow, broadly obovate, 10–17 mm;

stamens 4.5–7 mm;

anthers 0.8–2.3 mm;

staminodia absent;

styles connate nearly to apex, 4–6 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, 4–5 × 3.4–3.7 mm, thick textured, 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.

2–3 × 0.8–1.3 mm.

2.3–2.8 × 1–1.3 mm.

= 60.