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FNA | Family List | FNA Vol. 28 | Hypnaceae | Hypnum

5b. Hypnum cupressiforme var. filiforme Bridel, Muscol. Recent. 2(2): 138. 1801.

Plants small, pale green to dull green, sometimes yellowish. Stems 2-6 cm, creeping, subjulaceous, irregularly branched to somewhat pinnate. Leaves straight to somewhat falcate, oblong-lanceolate, gradually narrowed to apex; margins nearly entire; alar cells many, subquadrate; . Branch leaves 1-1.4 × 0.2-0.4 mm or slightly smaller.

Capsule maturity unknown. Vertical surfaces of cliffs and tree trunks; low to high elevations (0-2500 m); N.B., N.S., P.E.I.; Ark., Conn., Maine, Mass., Mich., N.H., N.J., N.Y., N.C., Okla., Pa., Tenn., Tex., Va.; s South America; Europe; Asia; Africa; Pacific Islands (New Zealand); Australia.

When well developed, var. filiforme is distinctive, with filiform julaceous stems and straight leaves. There are variants with somewhat falcate-secund leaves that can be confused with Hypnum andoi. The latter species has long-attenuate leaf apices, is not julaceous, although filiform, and the leaves are not strongly imbricate as in var. filiforme. The many specimens that closely resemble var. filiforme strongly suggest that it may be an environmental form induced by the habitat that holds moisture rather briefly during the growing season.


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