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The Arched Feather-moss

HYPNUM Sub-genus PLEUROZIUM

The species of this sub-genus increase yearly by arched branches or by rigid erect growths, the branches are short, unequal, and grow outward from the main stem, a character which suggested the name Pleurozium, a compound of the Greek ?? a side, and ?? a branch.

The leaves on the stem are larger than those on the branches, and are different in shape. Besides these leaves there are numerous large and many-parted leaf-like organs (paraphyllia).

The other characters of this sub-genus are similar to those of the genus Hypnum.