Rayjacksonia is a genus of North American flowering plants in the family Asteraceae.Hartman, Ronald Lee & Lane, Meredith A. 1996. Reclassification of North American Haplopappus (Compositae: Astereae) completed: Rayjacksonia gen. nov. American Journal of Botany 83(3): 368–369Tropicos, Rayjacksonia R.L. Hartm. & M.A. Lane Lady Bird Johnson Wildflower Center, University of Texas It is one of several genera with the common name tansyaster.
The genus is named in honor of American botanist Raymond Carl Jackson.Flora of North America Vol. 20 Page 437 Rayjacksonia R. L. Hartman & M. A. Lane, Amer. J. Bot. 83: 368. 1996.
SpeciesFlann, C (ed) 2009+ Global Compositae Checklist Biota of North America Program 2013 county distribution maps Rayjacksonia annua (Rydb.) R.L.Hartm. & M.A.Lane - Texas, Oklahoma New Mexico, Colorado, Kansas, Nebraska & Wyoming Rayjacksonia aurea (A.Gray) R.L.Hartm. & M.A.Lane - Texas Rayjacksonia phyllocephala (DC.) R.L.Hartm. & M.A.Lane Tamaulipas, Texas, Louisiana, Mississippi & Florida.
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