Flora of North America species comparison

15–40 cm × 3–12 mm.

10–30 cm × 3–11 mm.

10–35 cm, smooth or slightly scabrous near base.

10–35 cm, smooth.

perianth yellow or white, often tinged or fading blue, 18–26 mm, tube slenderly funnelform, moderately attenuate at base, 6–10 mm, lobes widely spreading, with conspicuous dark purple midvein, 12–16 mm, ca. twice as long as tube;

stamens attached at 1 level, nearly equal;

filaments narrowly subulate, 3–4 mm, apical appendages absent;

anthers blue or sometimes white, 1.5–2 mm;

ovary 1/2 as long as stipe;

pedicel 1.5–4 cm.

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.

= 32.

= 16.