Flora of North America species comparison

slender or coarse, stout, branching or not, strongly flexuous, 3–10 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.

subumbellate, 1–6-flowered;

bracts 4–8 cm, bases dilated.

1–7-flowered.

erect;

perianth open, cup-shaped;

sepals usually with red-brown blotch at base, lanceolate-ovate, 2–4 cm, apex acute;

petals lemon to golden yellow, with transverse line distal to gland, broadly cuneate to obovate, 3–5 cm;

glands round, deeply depressed, densely covered with short hairs with branching, coralline tips, surrounded by conspicuously fringed membrane and club-shaped hairs;

filaments ca. 10 mm;

anthers purplish brown, oblong, 4–10 mm.

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, lanceoloid-linear, angled, 6–9 cm, apex acuminate.

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

light yellow, translucent, flat.

light brown, irregular.

= 16.

= 20.