Flora of North America species comparison

9–40 cm × 2–10 mm.

10–30 cm × 3–11 mm.

10–30 cm, smooth except weakly scabrous near base.

10–35 cm, smooth.

perianth bright yellow or pale blue, 12–19 mm, tube attenuate at base, 5–10 mm, lobes widely spreading, striped greenish, 5–11 mm;

stamens attached alternately at 2 levels, unequal, those of proximal row very short;

filaments linear or barely wider at base, 1 or 3 mm, apical appendages absent;

anthers yellow or blue, 1–2 mm;

ovary green, equal to or longer than stipe;

pedicel 0.7–2 cm, usually shorter than perianth.

perianth pale yellow, drying purplish, 18–24 mm, tube ± cylindrical to narrowly funnelform, 8–12 mm, lobes spreading, lanceolate, 8–12 mm;

stamens attached at 1 level, unequal, alternately long and short;

filaments dilated entire length or narrowly triangular, 2 or 3.5 mm, sometimes with short, blunt apical appendages;

anthers lavender, 1 mm;

ovary equal to or longer than stipe;

pedicel slender, 1.5–4 cm.

= 16.

= 16.