OregonFlora species comparison

Fields, disturbed areas. Flowering May–Jul. 100–1000 m. WV. ID, WA; AZ. Native.

Tragopogon mirus is an allotetraploid species. It was formed as a result of a hybridization event between T. dubius and T. porrifolius, with a subsequent chromosome doubling among the offspring of said hybrids. As a consequence of the chromosome doubling, the newly formed allotetraploid plants cannot back cross with the parental species, thus leading to the creation of a new and novel species. Allotetraploid speciation, involving T. dubius and T. porrifolius, and resulting in the formation of T. mirus, has occurred on several separate occasions in the Palouse re­gion of Idaho and Washington, once in Arizona near Flagstaff, and once in Oregon (Soltis et al. 2012). Although populations of T. dubius and T. porrifolius are sympatric in Europe, where these species are native, no T. mirus has been reported from that continent.

Roadsides, fields, disturbed areas. Flowering May–Jul. 0–2300 m. BR, BW, Casc, Col, ECas, Lava, Owy, WV. CA, ID, NV, WA; throughout North America; Europe. Exotic.

See also T. pratensis and T. mirus discussions.