Schoenolirion, commonly known as rush-lily or sunnybell, is a small genus of flowering plants in the family Asparagaceae (subfamily Agavoideae), formerly placed in the family Agavaceae. The genus comprises three accepted species — Schoenolirion croceum, Schoenolirion albiflorum, and Schoenolirion wrightii — all of which are endemic to the southeastern United States. The genus was formally described by the American botanist John Torrey in 1855, published in the Journal of the Academy of Natural Sciences of Philadelphia. The name is a conserved name (nom. cons.), taking precedence over earlier synonyms Amblostima Rafinesque and Oxytria Rafinesque (the latter a rejected name), both published by Rafinesque in 1837. Within Asparagaceae, Schoenolirion belongs to the large and diverse subfamily Agavoideae, which also encompasses well-known genera such as Agave, Yucca, and Hosta. Schoenolirion plants produce grass-like foliage and small, typically white or yellow flowers borne in elongated racemes, giving rise to the common name sunnybell. The type species of the genus is S. croceum, originally described by the French botanist André Michaux.
Etymology
The genus name Schoenolirion was published by John Torrey in 1855 in the Journal of the Academy of Natural Sciences of Philadelphia and is a conserved name (nom. cons.). It supersedes the earlier synonyms Amblostima Rafinesque and Oxytria Rafinesque, both described in 1837; the latter (Oxytria) is formally rejected. The type species is Schoenolirion croceum (Michaux) A.Gray.
Distribution
All three species of Schoenolirion are endemic to the southeastern United States, with no native populations recorded elsewhere.
Taxonomy Notes
Schoenolirion is placed in the family Asparagaceae, subfamily Agavoideae, under the APG III classification system — a placement that supersedes the older assignment to family Agavaceae. GBIF lists the genus under Liliaceae, reflecting older taxonomic treatments that have not been updated to APG III. The genus has three accepted species: S. croceum (Michaux) Alph.Wood, S. albiflorum (Rafinesque) R.R.Gates, and S. wrightii Sherman. Synonyms of the genus include Amblostima Rafinesque and the rejected name Oxytria Rafinesque, both from 1837.
