Flora of North America species comparison

usually stout, sparingly branching, not flexuous or twisted, 3–6 dm.

not branching, less than 1 dm.

basal withering, 1–2 dm;

blade linear, glaucous.

basal persistent, 1–2 dm;

blade linear, flat;

cauline usually absent.

subumbellate, 1–4-flowered;

bracts opposite pedicel, 4–8 cm.

1–10-flowered.

erect;

perianth open, campanulate;

sepals usually with dark red blotch near base, lanceolate-ovate, 2–3 cm;

petals yellow, often tinged purple in drying, cuneate to obovate, 3–5 cm;

glands usually ± round, depressed, small, surrounded by conspicuously fringed membrane and a few long, yellow hairs, densely covered with slender, unbranched hairs;

filaments 9–10 mm;

anthers yellowish, oblong, 8–10 mm, apex obtuse.

± erect;

perianth open, campanulate;

sepals lanceolate, 8–10 mm, glabrous, apex acuminate;

petals white, obovate, 10–14 mm, not ciliate, adaxial surface glabrous or sometimes with few hairs near gland;

glands bordered proximally by ± ciliate membrane;

filaments equaling anthers;

anthers linear-oblong, apex acute.

erect, lanceoloid-linear, angled, 5–8 cm, apex acuminate.

nodding, 3-winged, ellipsoid, 1–2 cm.

flat.

irregular.

= ca. 14.

= 20.