Rudbeckia grandiflora var. grandiflora (Asteraceae) in Louisiana, U.S.A.
DOI:
https://doi.org/10.17348/jbrit.v14.i1.903Keywords:
State record, Louisiana, Coneflower, BodcauAbstract
The nominal variety of Rudbeckia grandiflora (Asteraceae) is recognized as occurring in Louisiana. A specimen recently collected by the author, plus older herbarium specimens, document this taxon’s occurrence in Bossier, Caddo, and Webster parishes. The habitats at the collection sites are discussed briefly and a rarity rank is proposed as the first step in the recognition of this taxon new for Louisiana.
References
California Soil Resources. 2019. https://casoilresource.lawr.ucdavis.edu. Accessed 17 Aug 2019.
Cronquist, A. 1980. Vascular flora of the southeastern United States. Volume I. Asteraceae. The University of North Carolina Press, Chapel Hill, North Carolina, U.S.A.
Gandhi, K.N. & R.D. Thomas. 1989. Asteraceae of Louisiana. Sida, Bot. Misc. No. 4.
NatureServe. 2019. NatureServe Explorer (http://explorer.natureserve.org, accessed 29 Oct 2019). Arlington, Virginia, U.S.A.
SERNEC Data Portal. 2019. http//:sernecportal.org/portal/index.php. Accessed on August 17.
Thomas, R.D. & C.M. Allen. 1996. Atlas of the vascular flora of Louisiana: Volume II: Dicotyledons, Acanthaceae – Euphorbiaceae. Louisiana Department of Wildlife and Fisheries, Baton Rouge, U.S.A.
Urbatsch, L.E. & P.B. Cox. 2006. Rudbeckia (Asteraceae: Heliantheae). In: Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico. 19+ vols. New York, U.S.A. and Oxford, UK. 21:43–45.
USDA, NRCS. 2019. The PLANTS Database (http://plants.usda.gov, 17 August 2019). National Plant Data Team, Greensboro, North Carolina, U.S.A.
