Flora of North America species comparison

10–30 cm × 2–5 mm.

9–40 cm × 2–10 mm.

5–20(–25) cm, ± scabrous.

10–30 cm, smooth except weakly 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 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.

= 16.

= 16.