Flora of North America species comparison

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

not branching, less than 1 dm.

basal persistent, 20–35 cm;

blade gradually tapering distally, adaxially pubescent.

basal persistent, 1–2 dm;

blade linear, flat;

cauline usually absent.

subumbellate, 1–3-flowered;

bracts 2, subopposite, linear to narrowly lanceolate, attenuate, 1–3 cm.

1–10-flowered.

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;

perianth open, campanulate;

sepals lanceolate, 8–10 mm, glabrous, apex acuminate;

petals white, obovate, 10–14 mm, not ciliate, adaxial surface glabrous or sometimes with few hairs near gland;

glands bordered proximally by ± ciliate membrane;

filaments equaling anthers;

anthers linear-oblong, apex acute.

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

nodding, 3-winged, ellipsoid, 1–2 cm.

light-colored, irregular.

irregular.

= 20.

= 20.