40. Bryum thomsonii Mitt. 卷叶真藓 juan ye zhen xian
J. Proc. Linn. Soc., Bot., Suppl. 1: 73. 1859. Type: China. Xizang (Tibet), Thomson 401.
Plants small, less than 10 mm high. Leaves narrowly triangular-lanceolate; margins recurved throughout; costae excurrent, ending in short awns; leaf cells rhomboidal, more or less thick-walled. Sporophytes not seen.