Tragopogon pratensis: Multiple introductions to North America, circumscription, and the formation of the allotetraploid T. miscellus

1. Soltis, D.E.
2. Mavrodiev, E.V.
3. Brukhin, V.
4. Roalson, E.H.
5. Albach, D.C.
6. Godden, G.T.
7. Alexeev, Y.E.
8. Gitzendanner, M.A.
9. Freeman, C.C.
10. Suárez-Santiago, V.N.
11. Soltis, P.S.