WESTWARD RANGE EXTENSION OF DENDROLYCOPODIUM OBSCURUM (L.) A. HAINES (LYCOPODIACEAE), INCLUDING NEW STATE RECORDS FOR MINNESOTA, U.S.A.

摘要

Significance of the Report. A westward extension of the species’ range, including new state records for the state of Minnesota.Previous Knowledge. The genus Dendrolycopodium A. Haines (Lycopodi-aceae) (ground-pine), which is a small genus that has been segregated from the larger genus Lycopodium L. (Haines 2003; PPG I 2016), consists of four species, three of which are known from the Great Lakes region (Wagner Jr. and Beitel 1993). The fourth species in the genus, D. juniperoideum (Sw.) A. Haines, is found in northeast Asia. The three Great Lakes species—D. dendroideum (Michx.) A. Haines, D. hickeyi (W.H. Wagner, Beitel & R.C.Moran) A. Haines, and D. obscurum (L.) A. Haines—have all been documented from the state of Wisconsin. Various online resources and field guides (Chadde 2019; Kartesz 2015; USDA, NRCS 2020; Walewski 2016) show all of these species as also occurring inthe state of Minnesota. However, our thorough examination of Dendrolycopodium collections in Minnesota’s major herbaria indicates that all specimens are either D. dendroideum or D. hickeyi.