Flora of North America species comparison

usually not branching, straight or flexuous, often scapelike, 0.5–3 dm.

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

basal 1–3 dm × 2–15 mm, usually equaling or exceeding stem length;

blade flat, adaxial surface glabrous.

basal withering, 1–2 dm;

blade linear, glaucous.

subumbellate, 1–5-flowered;

bracts 2–several, lanceolate to linear, unequal, 1–5 cm, apex acuminate;

peduncle slender, becoming stouter, deflexed in fruit.

subumbellate, 1–4-flowered;

bracts opposite pedicel, 4–8 cm.

erect or spreading;

perianth open, campanulate;

sepals typically with purple glandular blotch near base, oblong-lanceolate, shorter than petals, adaxial surface minutely hairy, apex acute to acuminate;

petals yellowish white, sometimes lavender-tinged, frequently with narrow purple crescent distal to gland, broadly obovate, cuneate, moderately bearded nearly to apex, adaxial surface densely hairy, margins fringed, apex obtuse or acute;

glands transversely oblong, arched upward, ± deeply depressed, bordered proximally by narrow, ascending, deeply fringed membrane, distally by narrow, crenate membranes, gland surface with rather long, slender hairs toward distal portion;

anthers lanceolate, apex long-apiculate.

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.

nodding, 3-winged, ellipsoid, apex usually acute.

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

pale yellow.

flat.

= 20.

= ca. 14.