Flora of North America species comparison

stiffly ascending-spreading, few to many-branched.

erect or spreading, branching at base and in inflorescence.

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.

proximal in whorls of 4, distal alternate, or mostly whorled or mostly alternate, spreading to ascending;

stipular glands present;

blade lanceolate to oblanceolate, 10–20 × 2–6 mm, margins entire, of distal leaves ciliate, apex deltate-acute to obtuse.

racemes.

panicles;

bracts ciliate.

3–15 mm.

0–1 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, 2–3.5 mm, margins of inner sepals scarious, glandular-toothed, apex acute;

petals lemon yellow, oblanceolate to narrowly obcordate, 2.5–6 mm;

stamens 2–5 mm;

anthers 0.3–0.7 mm;

staminodia usually present, sometimes absent;

styles distinct, 1.6–3 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.

broadly ovoid, 1.5–2.5 × 2–2.5 mm, apex sharp-pointed (easily crushed), readily dehiscing into 10, 1-seeded segments, segments falling freely, false septa rudimentary, margins of true septa usually ciliate.

2–3 × 0.8–1.3 mm.

1–1.5 × 0.6–1 mm.

= 36.