Flora of North America species comparison

ovoid, not rhizomatous or oblique, forming 1–2 short rhizomes terminated by new bulbs.

never rhizomatous, ovoid.

forming abcission layer at soil level, deciduous with scape after seeds mature or frequently breaking at that level after pressing;

blade 10–35 cm.

usually persistent;

blade 10–40 cm.

deciduous, strongly flattened, winged, 5–28 cm.

usually persistent, not strongly flattened or winged, 10–40 cm.

10–40-flowered;

spathe bracts 2.

10–50-flowered;

spathe bracts 2–3.

6–12 mm;

tepals erect to ± spreading, apex acute to acuminate;

stamens included, 1/2–3/4 tepals;

ovary crestless or obscurely to prominently crested;

processes 3 or 6;

pedicel 5–25 mm.

8–10 mm;

tepals erect, apex acute;

stamens ± equaling tepals or exserted;

ovary crestless;

pedicel 8–20 mm.

= 14, 28.

= 42.