Flora of North America species comparison

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

usually not branching or twisted, straight, 1.5–4.5 dm.

basal persistent, 1–2 dm;

blade linear, flat, glabrous adaxially.

blade linear, becoming involute;

basal withering.

1–7-flowered.

subumbellate, 1–4-flowered;

bracts congested, unequal.

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;

perianth open, campanulate;

sepals marked similar to petals, usually shorter, lanceolate, glabrous, apex acuminate;

petals white, tinged with lilac or infrequently magenta, yellow at base, with reddish brown or purple band or blotch distal to gland, broadly obovate, cuneate, sparsely invested near gland with slender hairs, apex usually short-acuminate;

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

filaments ca. equaling anthers;

anthers yellowish or pinkish, oblong, apex obtuse.

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

erect, linear-lanceoloid, 3-angled, apex acuminate.

light brown, irregular.

flat.

= 20.

= 16.