Tragopogon mirus Ownbey is a species native to the States of Washington and Idaho. Intensive studies over the course of many years have demonstrated that it originated as an allopolyploid hybrid between T. dubius Scop. and T. porrifolius L., both of which are European species naturalized in the US. Tragopogon mirus has become established in the wild, reproducing by its own, thus deserving recognition as a species.
Tragopogon mirus is an herb up to 150 cm (60 inches) tall. Leaves are slightly tomentose when young, nearly glabrous when fully mature. Leaf apices are straight, not curved or coiled as in some other species of the genus. Flower heads are purple to brownish purple with a yellow center.
- Ownbey, M. 1950. Natural hybridization and amphiploidy in the genus Tragopogon. American Journal of Botany 37:487-499.
- S.J. Novak, D.E. Soltis, & P.S. Soltis. 1991. Ownbey's Tragopogons Forty Years Later. American Journal of Botany 78:1586-1600.
- Soltis, D. E., Soltis, P. S., Pires, J. C., Kovarik, A., Tate, J. A., & Mavrodiev, E. (2004). Recent and recurrent polyploidy in Tragopogon (Asteraceae): cytogenetic, genomic and genetic comparisons. Biological Journal of the Linnean Society, 82, 485-501.
- Flora of North America v 19-21 p 306.
- Flora of Eastern Washington and Adjacent Idaho, Eastern Washington University