Flora of North America species comparison

10–30 cm × 2–5 mm.

15–40 cm × 3–12 mm.

5–20(–25) cm, ± scabrous.

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

perianth yellow, aging purple, 12–17 mm, tube slender, narrowly funnelform, attenuate at base, 4–7 mm, lobes somewhat spreading, with brown midvein, 8–10 mm, ca. twice as long as tube;

stamens attached at 1 level, equal;

filaments linear, 5–6 mm, more than 1/2 as long as perianth lobes, apical appendages absent;

anthers cream or blue, 1–1.5 mm;

ovary equal to stipe;

pedicel 0.5–3 cm.

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.

= 16.

= 32.