Flora of North America species comparison

15–40 cm × 3–12 mm.

10–40 cm × 3–10 mm.

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

10–40 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 to golden, 12–15 mm, tube funnelform, rather broad, 4–6 mm, lobes spreading, never rotate, with dark midvein, 6–9 mm;

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

filaments dilated entire length, 1–2 or 2–4 mm, inner filaments equal to lobes, longer filaments rounded apically, apical appendages absent;

anthers yellow or blue, 1.5–2 mm;

ovary equal to or longer than stipe;

pedicel 1–2.5 cm.

= 32.

= 16.