]> Botany Example of Names Published: Machaeranthera boltoniae (Greene) B.L. Turner & D.B. Horne, Brittonia 16: 328 (1964). Turner, Billie Lee & Horne, David Bertram Turner, Billie Lee & Horne, David Bertram B. L. Turner & D. B. Horne B.L.Turner & D.B.Horne Billie Lee Turner & David Bertram Horne