Flora of North America species comparison

15–40 cm × 3–12 mm.

30–100 cm × 4–30 mm.

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

30–90 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 lavender, 16–27 mm, tube funnelform-campanulate, acute at base, 7–12 mm, lobes erect, 9–15 mm;

stamens attached alternately at 2 levels, equal;

filaments triangular, widest at base, 2 mm, apical appendages absent;

anthers purple, 1.5 mm;

ovary white, equal to stipe;

pedicel 3–8 cm.

= 32.

= 16.