Sidalcea asprella Greene subsp. elegans (Greene) Halse, 2020

Halse, Richard R., 2020, New Combinations In Sidalcea (Malvaceae), Journal of the Botanical Research Institute of Texas 14 (1), pp. 9-10 : 9

publication ID	https://doi.org/10.17348/jbrit.v14.i1.891
DOI	https://doi.org/10.5281/zenodo.16922369
persistent identifier	https://treatment.plazi.org/id/BE1CF426-1E72-EE3F-AA22-6BB10E47FA71
treatment provided by	Felipe
scientific name	Sidalcea asprella Greene subsp. elegans (Greene) Halse
status	comb. nov.

Treatment

Sidalcea asprella Greene subsp. elegans (Greene) Halse View in CoL , comb. nov.

Sidalcea elegans Greene,Cybele Columb. View in CoL 1:35.1914. Sidalcea malviflora (DC.) A. Gray subsp. elegans (Greene) C.L. Hitchc., Univ. Wash. Publ. Biol. View in CoL 18:27. 1957 (as ‘ malvaeflora ’).

TYPE: U.S.A. OREGON. Josephine Co.: Eight Dollar Mountain , 12 Jun 1904, C.V.Piper 6171 (HOLOTYPE: US-00098128 ) .

Sidalcea virgata Howell View in CoL , an Oregon endemic, has had a less checkered past. It has been considered a species by Piper and Beattie (1915), Roush (1931), Peck (1941, 1961), Wiggins (1951) and by the Flora of the Pacific Northwest (Hitchcock & Cronquist 2018). Hitchcock (1957) called it a subspecies of S. malviflora View in CoL and Dimling (1991) called it a variety of S. malviflora View in CoL .

The position of Sidalcea virgata View in CoL in Andreasen and Baldwin’s (2003) phylogenetic study is unresolved. However,it does appear to be part of a large clade which contains S.asprella View in CoL , but not S.malviflora View in CoL . Morphological examination of S. virgata View in CoL and S.asprella View in CoL throughout their range in Oregon leads to the conclusion that S.virgata View in CoL should be treated as a subspecies of S. asprella View in CoL requiring a new combination.