Phegopteris excelsior, N. R. Patel & A. V. Gilman. Two, 2019

Patel, Nikisha R., Fawcett, Susan & Gilman, Arthur V., 2019, Phegopteris excelsior (Thelypteridaceae): A New Species of North American Tetraploid Beech Fern, Novon, A Journal for Botanical Nomenclature 27 (4), pp. 211-218 : 218

Phegopteris excelsior .

CANADA. Nova Scotia: Lower Blomidon , Cody 20242 ( MICH) ; Kings Co., Hersey & Newell s.n. ( GH) . Quebec: Hatley, Churchill s.n. ( GH) ; Gibraltar, Churchill s.n. ( GH) ; Hatley , Knowlton s.n. ( GH) ; St. Gregoire , Rouleau et al. s.n. ( GH) ; Mt.Rougemont, Sherk & Cinq-Mars 437 ex cult #65374 ( MICH) . U.S.A. Connecticut: Windsor, Clark s.n. (larger of two specimens on the sheet) ( NEBC) . Maine: Mars Hill, Gilman 04104 ( VT) ; Cooper, Gilman 06050 ( AVG); Molunkus , Gilman 2K199 ( AVG) ; Washington, Gilman 96087 ( AVG) ; Bucksport, Gilman 97261 ( AVG) ; Litchfield, Gilman 98018 ( AVG); Strong, Seymour 24090 ( VT) . New York: Delaware Co., B. D. Gilbert s.n. ( GH) . Vermont: Cabot, Gilman 01142 ( AVG) ; St. Johnsbury, Gilman 18021 (holotype) ( VT) ; St. Johnsbury , Gilman 96061 ( AVG) ; East Montpelier , Gilman 96118 ( AVG) ; Waterford, Gilman 96248 ( AVG) ; St. Johnsbury , Rooney s.n. ( VT) ; Dorset, Terry s.n. ( VT) .