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Alternateleaf Archidium Moss (Archidium alternifolium)

Archidium alternifolium, also known as Alternateleaf Archidium Moss, is a species of moss belonging to the family Archidiaceae and the order Bryopsida.

Taxonomy and Nomenclature:

• Scientific Name: Archidium alternifolium (Hedw.) Schimp.
• Synonyms: The text mentions *Acaulon moss, Acaulon triquetrum (Spruce) C. Mll.*, but it is unclear whether they are considered synonyms.
• Family: Archidiaceae
• Kingdom: Plantae
• Taxonomic Rank: Species

Distribution and Habitat:

• This moss is found in various locations, including bare soils.
• One record specifically mentions a floodplain habitat.
• It has been found in the Eastern Himalayan forest, an eco-region of temperate broadleaf forest.
• Another record lists its presence in the Pacific, Australia, and New Zealand.

Morphological Characteristics and Growth Habits:

• The shoots of this moss exhibit a prostrate habit.
• Leaves are widely spaced and alternate along the stem.
• Leaves are arranged in two rows on opposite sides of the stem (distichous).
• Leaves are ovate to broadly ovate, abruptly cuspidate to apiculate.
• Capsules may lack a mouth (opening) at the end.

Ecological Role:

• It's found in bare soil, indicating a possible role in early succession or disturbed habitats.
• It can be found in swards with other mosses.

Quirky Facts:

• The text mentions an association of Archidium ohioense with species of Riccia.
• The species name *Archidium* has been historically associated with herbal medicine.

Interactions with Other Organisms:

• Fragments of moss may be consumed by the "y jumper."

Further Information:

• The text references the Azorean Biodiversity Portal, Bugguide.net, and GBIF.org as potential sources for additional information.