Flora of North America species comparison

15–40 cm × 3–12 mm.

1–2, 10–50 cm × 3–15 mm;

blade linear.

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

10–80 cm, usually smooth, sometimes scabrous near base.

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 straw-colored or golden yellow, or sometimes white flushed with purple, usually similarly colored both adaxially and abaxially, 12–27 mm, tube acute at base, 3–10 mm, much shorter than or equal to lobes, lobes ascending to reflexed, with green, brown, or purple midveins, 6–20 mm;

stamens attached at 1 level, held close to pistil, unequal, alternately long and short;

filaments dilated entire length, noticeably flattened, apical appendages present, forked, those of longer filaments pointed, conspicuous;

anthers white, cream, yellow, or blue, 1–2 mm;

ovary longer than stipe;

pedicel 1–9 cm (–12 cm in subsp. cookii).

= 32.

= 10, 14, 16, 24, 32, 40, 42, 50.