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fern moss
plant
Also known as: Thuidium
fern moss, (genus Thuidium), any of several species of plants (subclass Bryidae) that form mats in grassy areas and on soil, rocks, logs, and tree bases throughout the Northern Hemisphere. Fewer than 10 of the 73 species are native to North America. A fern moss has fernlike branches and curved, cylindrical spore cases that mature in late summer or autumn.
This article was most recently revised and updated by William L. Hosch.
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