Asplenium trichomanes subsp. quadrivalens
Asplenium trichomanes subsp. quadrivalens D.E.Mey., Ber. Deutsch. Bot. Ges. 74: 456 (1962) (syn: Asplenium lovisii Rothm. ; Asplenium quadrivalens (D.E.Mey.) Landolt ; Asplenium trichomanes subsp. lovisii Rothm.); . N. America, Temp. & Subtropical Old World to NE. & E. Tropical Africa: Afghanistan, Albania, Algeria, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Canary Is.,…