抄録
A luminous moss Schistostega pennata was found from Hitachi City, Ibaraki Prefecture in 1979. The moss grows luxuriantly in six caves at about 460m elevation. The species was described on the basis of our plants : plants small, simple, 6-8 mm high, 2-3 mm broad, yellowish green ; stems ca. 50μm thick, with cortical cells 105-132μm long, 16μm wide ; cells of leaf-blade rhomboid, 100-158μm long, 21-26μm wide, chloroplasts 21-40 per cell, mostly 5-6μm in diameter lens-shaped cells of protonema 25-30μm in diameter, each containing 10-16 chioroplasts.