Monographs Details: Plagiothecium cavifolium (Brid.) 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.
Description:Species Description - Spore morphology: Size: 9-14 µm in diameter, mean 12 µm. Color: light green to yellowish green. Shape: spherical or rarely ovoid. Sculpture: gemmate, the gemmae usually close and regularly distributed (Figs. 19, 20) or rarely irregularly distributed with bare regions (Fig. 21), 0.3-0.5 µm in diameter, 0.1-0.3 µm in height, papillose, the papillae conic to rounded (Figs. 22-24), the spore surface between the gemmae smooth or granulose.