Asplenium vespertinum Maxon Asplenium vespertinum Maxon, Bull. Torrey Bot. Club 27: 197. 1900 sec. Mickel & Smith 2004≡Asplenium trichomanes var. vespertinum (Maxon) Jeps., Man. Fl. Pl. Calif. [Jepson]: 35. 1923 syn. sec. Mickel & Smith 2004