Flora of North America species comparison

usually not branching or twisted, 1–4 dm.

usually branching distal to base, 1–5 dm, slightly glaucous.

basal withering, 1–2 dm;

blade linear.

basal persistent, 20–50 cm;

blade linear, flat, slightly glaucous.

1–4-flowered;

bracts 2–4 cm.

2–many-flowered.

erect;

perianth open, campanulate;

sepals with dark red or purple blotch near base, lanceolate, 1–4 cm, usually glabrous, apex acuminate;

petals white tinged with lilac, with longitudinal median green stripe on abaxial surface and dark red or purple crescent distal to gland, narrowly obovate, 2–4 cm, ± glabrous;

glands surrounded by yellow border, round, depressed, surrounded by conspicuously fringed membrane, densely covered with short, unbranched or distally branching hairs;

filaments 5–6 mm;

anthers yellow, blue, or maroon, oblong, 5–7 mm, apex obtuse.

nodding;

perianth closed at apex, globular;

sepals spreading, ovate to lanceolate, 1.5–2 cm;

petals deep yellow, with brown abaxial blotch, widely lanceolate, 1.6–2 cm, densely ciliate throughout, adaxial surface glabrous or with a few hairs near gland;

glands deeply depressed, bordered distally by band of hairs;

filaments longer than anthers;

anthers oblong, apex obtuse or acute.

erect, linear-lanceoloid, angled, 3–7 cm, apex acuminate.

nodding, winged, oblong, 2–3 cm, apex obtuse or acute.

yellow, flat.

dark brown, irregular.

= 14.

= 20.