Figure 9. Hybridization in Liatris. A-C, photographs taken 13 July 1993 at the type locality of L. Xfreemaniana, showing differences in head arrangement: A. L. cylindracea. B. L. Xfreemaniana. C. L. oligocephala. D-F, pressed heads of same taxa, from collections (UNA) made 18 July 1993, showing differences in outer phyllary shape and in degree of ciliation: D. A. & S. 7800. E. A. & S. 7801. F. A. & S. 7815. G-I, photographs taken 19 August 1999 at the type locality of L. Xmacdanieliana, showing differences in phyllary shape and orientation: G. L. cylindracea. H. L. Xmacdanieliana. I. L. squarrosa.