Flora of North America species comparison

not branching or with branch in axil of cauline leaf, straight, 1–5 dm.

usually branching, straight, 3–5 dm.

basal solitary, persistent, 1–3 dm × 2–20 mm, usually not exceeding inflorescence;

blade tapering toward both ends.

basal withering, 1–2 dm;

blade linear.

subumbellate, 1–9-flowered;

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

peduncle slender, becoming stiffly erect in fruit.

subumbellate, 1–3-flowered;

bracts 2–5 cm.

erect or spreading;

perianth open, campanulate;

sepals white or purplish-tinged, usually with purple crescent, lanceolate, usually equaling petals, often adaxially papillose, apex acuminate to attenuate;

petals white or purplish-tinged, usually with median, red-purple, adaxial crescent distal to gland, ovate to lanceolate, abruptly contracted at base into short, conspicuous claw, usually conspicuously fringed with long, slender hairs, adaxial surface ± papillose, bearing a few long hairs distal to claw, apex acute to acuminate;

glands transversely oblong, depressed, arched upward, bordered proximally by narrower, crenate membrane, with short, thick hairs toward distal margin of enclosed surface, both fringe of lower membrane and hairs densely long-papillose;

filaments basally dilated, ± equaling anthers;

anthers oblong-lanceolate, apex acute to short-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.

erect, 3-winged, ellipsoid, base and apex acute.

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

irregular.

light beige, flat, 4–6 mm.

= 20.

= 28.