Monographs Details: Hygroamblystegium tenax (Hedw.) Jenn.
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:Twelve plants, preservation good for all diagnostic features, 1.45-1.56 m. A combination of characters was used to identify the fossils, including acuminate leaves with the costa strong and ending below the apex, thick-walled laminal cells (the upper ones oblong-rhombic), and the enlarged basal laminal cells at the leaf insertion. Fig. 4d-h.