| H.G.A. Engler, Pflanzenr., vol. 280 [Heft 75], (Compositae Hieracium): p. 0, t. 0, fig. 0 (1922) [2] | |
| Illustration contributed by: | Missouri Botanical Garden, St. Louis, U.S.A. |
H.G.A. Engler, Pflanzenr., vol. 280 [Heft 75], (Compositae Hieracium): p. 0, t. 0, fig. 0 (1922)