Flora of North America species comparison

usually not branching or twisted, 1–4 dm.

± slender, usually not branching, often scapelike, 0.5–2 dm.

basal withering, 1–2 dm;

blade linear.

basal persistent, 1–2 dm;

blade linear, flat, glabrous adaxially.

1–4-flowered;

bracts 2–4 cm.

1–7-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.

erect to spreading;

perianth open, campanulate;

sepals oblong-lanceolate, 12–16 mm, usually glabrous, adaxial surface minutely papillose;

petals light green to white, usually with purple crescent distal to gland, ± oblanceolate or broader, 10–15 mm, adaxial surface hairy only distal to gland, margins conspicuously ciliate;

glands lunate, usually slightly depressed, bordered proximally by ± ciliate membrane, distally by short hairs;

anthers lanceolate, apex apiculate.

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

nodding, winged, ellipsoid-globular, 1–2 cm, apex obtuse or acute.

yellow, flat.

light brown, irregular.

= 14.

= 20.