''Rayjacksonia'' is a genus of

North American North America is a continent in the Northern and Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the sou ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s in the family

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

. It is one of several genera with the common name tansyaster. The genus is named in honor of American botanist

Raymond Carl Jackson Raymond Carl Jackson (May 7, 1928, Medora, Indiana – April 7, 2008, Lubbock, Texas) was an American botanist, known as Ray Jackson, noted "for his work in cytogenetics, particularly on polyploidy, and for his discovery of low chromosome numbers i ...

. ; SpeciesFlann, C (ed) 2009+ Global Compositae Checklist
/ref>Biota of North America Program 2013 county distribution maps
/ref> * '' Rayjacksonia annua'' (Rydb.) R.L.Hartm. & M.A.Lane - TX OK NM CO KS NE WY * '' Rayjacksonia aurea'' (A.Gray) R.L.Hartm. & M.A.Lane -

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

* '' Rayjacksonia phyllocephala'' (DC.) R.L.Hartm. & M.A.Lane

Tamaulipas Tamaulipas, officially the Free and Sovereign State of Tamaulipas, is a state in Mexico; one of the 31 states which, along with Mexico City, comprise the 32 federal entities of Mexico. It is divided into 43 municipalities. It is located in nor ...

, TX LA MS FL

References

Asteraceae genera Astereae Flora of Northern America {{Astereae-stub