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bryum moss

Scientific Name: Bryum erythroloma

Family: Bryaceae

Category: Moss

Growth: Nonvascular

Duration:

Other Names:

       

Bryum Moss: A Comprehensive Overview

Bryum is a diverse genus of mosses belonging to the family Bryaceae. With potentially over a thousand described species, Bryum stands out as one of the largest moss genera globally. Several species are well-known, and have been researched for biological and ecological reasons.

Scientific Name and Common Names

  • Scientific Name: Bryum Hedw.
  • Common Names: Bryum moss, thread-moss (referring to species such as Bryum dixonii), silvergreen bryum moss (referring to Bryum argenteum), red thread-moss/glossy red bryum moss (referring to Bryum miniatum).

Taxonomy and Nomenclature

  • Kingdom: (Implied - Plantae, based on being a moss)
  • Family: Bryaceae
  • Genus: Bryum
  • Examples of Species and Varieties:
    • Bryum dixonii Cardot ex W.E.Nicholson (Dixon's thread-moss)
    • Bryum argenteum Hedw. (silvergreen bryum moss)
    • Bryum capillare Hedw. var. capillare
    • Bryum cyclophyllum (Schwgr.) Bruch &amp Schimp.
    • Bryum turbinatum (Hedw.) Turner
    • Bryum algovicum Sendtn. ex Mll. Hal. var. algovicum
    • Bryum apiculatum Schwgr.
    • Bryum aeneum Blytt ex Bruch &amp Schimp. in B.S.G.
    • Bryum miniatum Lesq. (red thread-moss, glossy red bryum moss)
  • Synonyms/Alternative Names: Mentions Rhodobryum roseum formerly known as Bryum roseum and Rosulabryum capillare also named (Bryum capillare).

Distribution and Habitat

  • Bryum dixonii is endemic to Scotland and occupies montane habitats.
  • Bryum argenteum has a cosmopolitan distribution. It's also found in Antarctic regions and has been the subject of ecological studies.
  • Bryum capillare was found at bluff overlooking Alum Creek in Delaware Ohio.
  • Bryum caespiticium was found at Greenville Falls State Naure Preserve, Miami County, Ohio.
  • Found on a beach along Lake Winnipeg.
  • Generally found worldwide in woods or sheltered grassy locations (referring to Rhodobryum roseum, formerly Bryum roseum).

Morphological Characteristics and Growth Habits

  • Bryum mosses typically grow in tufts or patches.
  • Stems are mostly 1 to 3 cm tall.
  • Dry plants often have corkscrew-like shoots, with leaves spirally twisted around the stem.
  • Bryum argenteum forms pale green or almost white, compact tufts or patches which look shiny and silvery grey.
  • Bryum caespiticium forms crowded clumps of leaves at the upper ends of the stems.
  • Bryum flaccidum grows with leaves arranged in a rosette.
  • Long-leaved thread moss (a Bryum species) is reddish-green.

Ecological Role

  • Bryum argenteum is an important component of Biological Soil Crusts (BSCs) in the Gurbantunggut desert.
  • Silvery thread moss (Bryum argenteum) is also considered a weed in some contexts, requiring management strategies.

Genetic and Cytological Information

  • RAPD (Random Amplified Polymorphic DNA) techniques have been used to assess genetic diversity in Bryum pseudotriquetrum.

Interactions with Other Organisms

  • Studies show that Bryum argenteum is dependent on epiphytic bacteria for freezing protection in Antarctic environments.
  • Can be affected by the fungal pathogen, Waitea circinata.

Further Information

  • Jepson eFlora for CA Vascular Plants, University of California provides information on the genus Bryum in California.
  • Encyclopedia of Life contains information on Bryum argenteum.
  • Discover Life offers details on the biology, natural history, ecology, identification, and distribution of Bryum argenteum.
  • AusMoss provides records and maps of Bryum species.