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acaulon moss

Scientific Name: Acaulon triquetrum

Family: Pottiaceae

Category: Moss

Growth: Nonvascular

Duration:

Other Names:

       

Acaulon muticum

Also known as Rounded Pygmy-moss or simply acaulon moss, Acaulon muticum is a small, often overlooked moss.

Considerations for Pets

  • The plant is small (1-2 mm tall) and could potentially be ingested by small pets.

Taxonomy and Nomenclature

  • Scientific Name: Acaulon muticum (Brid.) Muell.Hal.
  • Common Names: Rounded Pygmy-moss, acaulon moss
  • Family: Pottiaceae
  • Rank: Species
  • Synonyms:
    • Tortula acaulon
    • Phascum cuspidatum
  • Varieties: Acaulon muticum var. rufescens (A. Jaeger) H.A. Crum
  • Other Species:
    • Acaulon triquetrum (Spruce) C. Mll. Hal.
    • Acaulon schimperianum (Sull.) Sull.
    • Acaulon eremicola
    • Acaulon integrifolium
    • Acaulon mediterraneum

Distribution and Habitat

  • Acaulon eremicola has been described from arid central Australia.
  • Acaulon schimperianum was formerly known only from North America but has since been reported in China (East Asia).

Morphological Characteristics

  • Plants often appear brown and are quite small, typically 1-2 mm tall.
  • They appear to consist of a few concave upper leaves.
  • Tortula acaulon, a synonym, has 3 mm leaves and forms green patches.
  • The median cells of the leaves in two species are elongate hexagonal and smooth, making placement in Pottiaceae difficult.

Ecological Role

  • Models suggest that species abundance differs among soil and human footprint types in grassland and parkland regions.