Monographs Details: Isopterygiopsis muelleriana (Schimp.) Z.Iwats.
Authority: Buck, William R. 1987. Bryostephane Steereana: A Collection of Bryological Papers Presented to William Campbell Steere On The Occasion of His 80th Birthday. Mem. New York Bot. Gard. 45: 1-749.
Discussion:Most recently mapped by Vitt and Horton (1979b), this bicentric species is a characteristic species of acidic tundra habitats. In eastem Beringia, it occurs only in moist seeps and in moist overhanging depressions on siliceous rocks. Its association with a unique set of species is discussed by Vitt and Horton (1979a).