Flora of North America species comparison

not branching, straight, 1–5 dm.

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

basal persistent, subtended by inflorescence, 1–3 dm × 5–25 mm;

blade flat, tapering toward both ends, becoming involute.

basal withering, 1–2 dm;

blade linear, glaucous.

subumbellate, 1–5-flowered;

bracts 2 or more, narrowly lanceolate to linear, long-attenuate, unequal, 1–5 cm.

subumbellate, 1–4-flowered;

bracts opposite pedicel, 4–8 cm.

erect;

perianth open, campanulate;

sepals ovate to lanceolate, usually much shorter than petals, glabrous, apex acute to acuminate;

petals creamy white to lavender, with conspicuous median red-purple adaxial blotch, obovate, invested near gland with few long, flexuous hairs, base cuneate, apex rounded or acute;

glands triangular-lunate, slightly depressed, bordered proximally by comparatively narrow, deeply fringed membrane, distally often by narrower, crenate membranes, enclosed surface densely covered with long yellowish hairs, which, with membrane fringe, are often inconspicuously papillose;

filaments slightly longer than anthers;

anthers oblong, apex obtuse.

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, 3-winged, ellipsoid-oblong.

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

light beige.

flat.

= 20.

= ca. 14.