Gaillardia Foug.
Literature: Biddulph (1944), Stoutamire (1960), Hamilton (2000), Strother (2006), Turner & Watson (2007), Jäger & al. (2008).
Gaillardia is a New World genus of ca. 20 species. Most are native to the U.S.A., Mexico and Argentina. Few taxa are popular horticultural plants (see Hamilton 2000 and Jäger & al. 2008) and sometimes occur as escapes from cultivation.
Literature
Biddulph S.F. (1944) A revision of the genus Gaillardia. Res. Stud. State Coll. Wash. 12: 195-256.
Hamilton R. (2000) Gaillardia. In: Cullen J. & al. (eds.), The European Garden Flora, vol. 6. Cambridge University Press, Cambridge: 645-646.
Jäger E.J., Ebel F., Hanelt P. & Müller G. (eds.) (2008) Rothmaler Band 5. Exkursionsflora von Deutschland. Krautige Zier- und Nutzpflanzen. Springer Verlag, Berlin: 880 p.
Stoutamire W.P. (1960) The history of cultivated gaillardias. Baileya 8: 12-17.
Strother J.L. (2006) Gaillardia. In: Flora of North America Editorial Committee (eds.), Flora of North America, vol. 21. Oxford University Press, New York-Oxford: 421-426.
Turner B.L. & Watson T. (2007) Taxonomic revision of Gaillardia (Asteraceae). Phytologia Memoirs 13: 112 p.