Flora of North America species comparison

twining or straggling over ground, branching, 1–2 dm, usually sinuous.

usually not branching, stout, 2–5 dm.

basal, withering;

blade linear, attenuate.

basal withering, 0.5–1 dm;

blade linear.

1–4-flowered;

bracts 1–3 cm.

subumbellate, 1–3-flowered;

bracts 3–5 cm.

erect;

perianth open, campanulate, each member with transverse yellow band;

sepals lanceolate to lanceolate-ovate, 2–3 cm;

petals white with lilac tinge, darker veined, especially distally, sometimes with purple blotch distal to gland, obovate to cuneate, 3–4 cm, with sparse or dense, short or long hairs near gland, apex rounded;

glands transverse-lunate or wider, densely short-hairy;

filaments 6–10 mm;

anthers oblong, 5–7 mm, apex obtuse or acute.

erect;

perianth open, campanulate;

sepals lanceolate, 4–5 cm, apex acuminate;

petals purple, with median green stripe on abaxial surface, obovate, 4–6 cm, bearded distal to gland, apex acuminate;

glands triangular-sagittate, slightly depressed, densely covered with slender hairs;

filaments 8–9 mm;

anthers lanceolate-linear, ca. 1 cm, apex obtuse.

erect, lanceoloid, angled, stout, 3–4 cm.

erect, lanceoloid-linear, angled, 4–5 cm, apex acuminate.

light beige, flat.

flat, inflated.

= 14.

= 14.