Zigadenus bracteatus (Sims) Sweet
Zigadenus chloranthus Richardson
Zigadenus canadensis Baker
Anticlea gracilenta (Greene) R.R.Gates
Zigadenus mohinorensis Greenm.
Anticlea longa (Greene) A.Heller
Zigadenus longus Greene
Zigadenus gracilentus Greene
Anticlea chlorantha (Richardson) Rydb.
Zigadenus elegans var. coloradensis (Rydb.) M.E.Jones
Zigadenus speciosus Douglas ex Hook.
Anticlea coloradensis (Rydb.) Rydb.
Anticlea alpina (Blank.) A.Heller
Zigadenus speciosus var. minor Greene
Anticlea mohinorensis (Greenm.) R.R.Gates
Melanthium hultgreenii Thunb.
Gomphostylis bracteata (Sims) Raf.
Zigadenus dilatatus Greene
Zigadenus washakie A.Nelson
Zigadenus alpinus Blank.
Zigadenus coloradensis Rydb.
Zigadenus chloranthus var. minor Hook. & Arn.
Zigadenus commutatus Schult. & Schult.f.
Zigadenus chloranthus var. major Hook.
Helonias bracteata Sims