Amblystegium serpens (Hedw.) Schimp. var. serpens

  • Authority

    Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)

  • Family

    Amblystegiaceae

  • Scientific Name

    Amblystegium serpens (Hedw.) Schimp. var. serpens

  • Description

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    Species Description - Small plants in loose, green or yellowish, soft mats. Stem leaves similar to branch leaves but somewhat larger. Branch leaves remote or crowded, ± erect when dry, 0.45-0.9 mm long, lanceolate or occasionally ovate-lanceolate, gradually acuminate, often long-acuminate, sermlate nearly all around or occasionally subentire; costa slender, 1/2-2/3 the leaf length, rarely extending into the acumen; upper cells shortly oblong-rhomboidal, 3-5:1; lower cells subquadrate to shortoblong in small groups at the basal angles, sometimes transversely elongate along the margins. Setae 9-23 mm long; capsules 1.5-2 mm long; operculum ± apiculate; cilia of endostome 1-3. Spores 11-18 µm, finely papillose.

  • Discussion

    Fig. 664f, g

    A. serpens (Hedw.) B.S.G., Bryol. Eur. 6(fasc 55/56). 1853.

    Hypnum serpens Hedw., Sp. Muse 268. 1801.

    Amblystegium serpens has leaves more or less erect when dry, with short, firm cells and a short, rather faint midrib. The costa is normally straight; that of A. varium is longer and nearly always somewhat flexuose.

  • Distribution

    On moist substrates, especially in swampy habitats, but also in more mesic situations; BajaCalifornia, Coahuila, Distrito Federal, Mexico, Morelos, Nuevo León, Puebla, Veracruz.—Mexico; Ecuador; Alaska and the Aleutians to Newfoundland, south to California, Texas, Arkansas, and the Carolinas; Europe, North Africa, and the Causasus, across Asia to Japan.

    Mexico North America| Ecuador South America| United States of America North America| Canada North America| Europe| Morocco Africa| Algeria Africa| Libya Africa| Egypt Africa| Tunisia Africa| Asia| Russia Asia| Georgia Asia| Turkey Asia| Azerbaijan Asia|