Flora of North America species comparison

stiffly ascending-spreading, few to many-branched.

erect, usually unbranched proximal to inflorescence, sometimes branched from decumbent 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.

blade narrowly elliptic to oblanceolate or narrowly obovate or oblong, larger 5–18 × 1.4–3.1 mm, largest at midstem, reduced in size both proximally and distally, apex obtuse to acute.

racemes.

panicles.

3–15 mm.

6–35 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 broadly lanceolate to ovate, outer sepals 2–3 mm, inner sepals broader, shorter, margins of all or sometimes only of inner sparsely but conspicuously glandular-toothed, apex acute to acuminate;

petals white or whitish, base yellowish, 2–5 mm, obovate;

stamens 1 mm, anthers 0.2–0.3 mm;

styles 0.5–1 mm.

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, 2–2.5 × 2 mm, fragile and subject to crushing when pressed;

segments persistent on plant, septa margins ciliate.

2–3 × 0.8–1.3 mm.

1–1.5 × 0.6–0.8 mm.

= 16.