Flora of North America species comparison

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

slender, not branching or rarely branching in axil of cauline leaf, straight, 2–4 dm.

basal, withering;

blade linear, attenuate.

basal persistent, 20–35 cm;

blade gradually tapering distally, adaxially pubescent.

1–4-flowered;

bracts 1–3 cm.

subumbellate, 1–3-flowered;

bracts 2, subopposite, linear to narrowly lanceolate, attenuate, 1–3 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 shorter than petals, ovate-acuminate, glabrous;

petals yellowish white, with purplish hairs toward base, broadly obovate, cuneate, inconspicuously fringed laterally, sparingly short-hairy adaxially, apex rounded;

glands transversely oblong, slightly depressed, densely covered with short, distally branching hairs, the bases of which unite at lower margin to form inconspicuous, discontinuous membranes;

filaments shorter than anthers;

anthers oblong-lanceolate, apex acute to short-apiculate.

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

erect, 3-winged, ellipsoid, ca. 2 cm, base and apex acute.

light beige, flat.

light-colored, irregular.

= 14.

= 20.