Flora of North America species comparison

stiffly ascending-spreading, few to many-branched.

erect, unbranched proximal to 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.

mostly opposite, appressed-erect;

stipular glands absent;

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

racemes.

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

3–15 mm.

0.5–2.9 mm, stout.

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, 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, 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.

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.

2–3 × 0.8–1.3 mm.

not seen.

= 36.