Alsophila tryoniana (Gastony) D.S. Conant Alsophila tryoniana (Gastony) D.S. Conant, J. Arnold Arbor. 64: 371. 1983 sec. Mickel & Smith 2004≡Nephelea tryoniana Gastony, Contr. Gray Herb. 203: 118, figs. 1973 syn. sec. Mickel & Smith 2004