Flora of North America species comparison

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

usually branching, straight, 3–5 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.

subumbellate, 1–5-flowered;

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

peduncle slender, becoming stouter, deflexed in fruit.

subumbellate, 1–3-flowered;

bracts 2–5 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 linear-lanceolate, attenuate, 2–3 cm;

petals white to purplish, streaked red to purple proximal to gland, with median red-brown blotch surrounded by pale yellow zone, cuneate to obovate, 3–4 cm, with a few short hairs near gland, apex rounded;

glands ± doubly lunate, not depressed, densely covered with short hairs;

filaments equaling anthers;

anthers oblong-linear, apex obtuse or acute.

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

erect, linear, angled, 4–7 cm, apex acute.

pale yellow.

light beige, flat, 4–6 mm.

= 20.

= 28.