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bryum moss

Scientific Name: Bryum subneodamense

Family: Bryaceae

Category: Moss

Growth: Nonvascular

Duration:

Other Names:

       

Bryum: A Diverse Genus of Mosses

Bryum is a genus of mosses belonging to the family Bryaceae, encompassing a wide variety of species found across diverse habitats.

Taxonomy and Nomenclature

  • Scientific Name: Bryum Hedw.
  • Family: Bryaceae
  • Common Names: Bryum moss, thread-moss (for some species). Specific species have unique common names, such as silvergreen bryum moss (Bryum argenteum) and Dixon's thread-moss (Bryum dixonii).
  • Synonyms: Examples include Rhodobryum roseum (formerly Bryum roseum) and Rosulabryum capillare (synonymous with Bryum capillare).

Distribution and Habitat

  • Bryum species are found worldwide.
  • Specific habitats mentioned include montane regions (for Bryum dixonii), beaches (Lake Winnipeg), and grazed salt marshes (for Baltic bryum in the Netherlands).

Morphological Characteristics and Growth Habits

  • Bryum mosses typically grow in tufts or patches.
  • Stem height ranges from 1 to 3 cm in some species.
  • Dry plants of some species may exhibit corkscrew-like shoots with leaves spirally twisted around the stem.
  • Bryum argenteum forms close tufts or cushions, appearing pale green or almost white and silvery-grey.

Ecological Role

  • Bryum argenteum is an important component of Biological Soil Crusts (BSCs) in some desert environments.
  • Bryum argenteum can become problematic in turfgrass, leading to management considerations for its control.

Genetic Information

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

Interactions with Other Organisms

  • Bryum argenteum may depend on epiphytic bacteria for freezing protection in Antarctic environments.
  • Waitea circinata is a fungal pathogen that affects turfgrasses and can impact Bryum species growing in those environments.
  • BcChi-A, a GH19 chitinase from the moss Bryum coronatum, is an endo-acting enzyme that hydrolyses the glycosidic bonds of chitin.

Further Information

  • Jepson eFlora (California Moss eFlora)
  • Encyclopedia of Life (for Bryum argenteum)
  • Discover Life (for Bryum argenteum)
  • AusMoss