Flora of North America species comparison

15–40 cm × 3–12 mm.

9–40 cm × 2–10 mm.

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

10–30 cm, smooth except weakly 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 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.

= 32.

= 16.