The genus is a member of the family
Melanthiaceae, tribe
Melanthieae.
Molecular phylogenetic studies in the 21st century have resulted in number of changes to placements within this tribe. (See also
Phylogeny of Melanthieae.)
Species formerly placed in Zigadenus Around twenty species were included in the genus as it was previously circumscribed.
Zigadenus glaberrimus, sandbog deathcamas, is the only species remaining in the genus. Species which have been transferred to other genera are listed below. •
Amianthium muscitotoxum – flypoison •
Anticlea elegans – elegant camas, alkali grass, mountain deathcamas •
Anticlea hintoniorum •
Anticlea mogollonensis – Mogollon deathcamas •
Anticlea neglecta •
Anticlea sibirica •
Anticlea vaginata – sheathed deathcamas •
Anticlea virescens – green deathcamas •
Anticlea volcanica – lava deathcamas •
Stenanthium densum – Osceola's plume, black snakeroot, crow poison •
Stenanthium gramineum – featherbells •
Stenanthium leimanthoides – pinebarren deathcamas •
Toxicoscordion brevibracteatum – desert deathcamas •
Toxicoscordion exaltatum – giant deathcamas •
Toxicoscordion fontanum – smallflower deathcamas •
Toxicoscordion fremontii – Fremont's deathcamas, star zigadene – (several varieties) •
Toxicoscordion nuttallii – Nuttall's deathcamas •
Toxicoscordion paniculatum – foothill deathcamas, sand-corn •
Toxicoscordion venenosum – deathcamas, meadow deathcamas – (several varieties) •
Toxicoscordion micranthum – smallflower deathcamas == Toxicity ==