title: Northern species of earth tongue genus Thuemenidium revisited, considering morphology, ecology and molecular phylogeny.
authors.affiliation: Botanical Museum, Department of Biology, P.O. Box 3000, 90014 University of Oulu, Finland.
authors.forename: Esteri
authors.initials: E
authors.lastname: Ohenoja
authors.forename: Zheng
authors.initials: Z
authors.lastname: Wang
authors.forename: Jeffrey P
authors.initials: JP
authors.lastname: Townsend
authors.forename: David
authors.initials: D
authors.lastname: Mitchel
authors.forename: Andrus
authors.initials: A
authors.lastname: Voitk