Flora of North America species comparison

usually not branching or twisted, 1–4 dm.

usually branching, 20–80 cm.

basal withering, 1–2 dm;

blade linear.

basal persistent, 3–7 dm;

blade linear, flat.

1–4-flowered;

bracts 2–4 cm.

2–many-flowered.

erect;

perianth open, campanulate;

sepals with dark red or purple blotch near base, lanceolate, 1–4 cm, usually glabrous, apex acuminate;

petals white tinged with lilac, with longitudinal median green stripe on abaxial surface and dark red or purple crescent distal to gland, narrowly obovate, 2–4 cm, ± glabrous;

glands surrounded by yellow border, round, depressed, surrounded by conspicuously fringed membrane, densely covered with short, unbranched or distally branching hairs;

filaments 5–6 mm;

anthers yellow, blue, or maroon, oblong, 5–7 mm, apex obtuse.

nodding;

perianth ± closed at apex, ± oblong;

sepals appressed to petals, ovate to lanceolate, 10–15 mm, glabrous, apex acuminate;

petals usually white to pink, ± elliptic, 20–25 mm, sparsely ciliate, hairs distal to gland slender;

glands ± depressed, proximal ciliate membrane 1/3–2/3 petal width;

filaments equaling anthers;

anthers oblong, apex obtuse or acute.

erect, linear-lanceoloid, angled, 3–7 cm, apex acuminate.

nodding, winged, oblong, 2–4 cm, apex obtuse or acute.

yellow, flat.

dark brown, irregular.

= 14.

= 20.