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A Mousetail Moss - Myurella tenerrima

Species of Concern
Native Species

Global Rank: G5
State Rank: S1

Agency Status
MNPS Threat Rank:

External Links

General Description
Plants: Pleurocarpous (Vitt 1988), threadlike (FNA 2014), small and in mats, light- to yellow-green. Stems about 10 mm long, frequently branched, the shoot with its appressed leaves resembling a slightly loose catkin (Lawton 1971).

Leaves: Stem leaves upright to spreading, loosely overlapping, round to broadly ovate, 0.3-0.4 mm long (FNA 2014), mostly longer than wide, greatly concave, acuminate to apiculate (Lawton 1971); the apiculous often recurved (FNA 2014); the base rounded; margins flat or incurved, smooth to serrulate from protruding cell ends; costa lacking or weak (Lawton 1971).

Leaf Cells: Laminal cells rhomboidal; distal laminal cells with one tiny papilla per cell on the abaxial (outer-facing) surface; alar cells not distinctive (FNA 2014).

Species Range

Range Comments
Greenland; Canada: AB, BC, MB, NL, NT, NU, ON, QC, YT; USA: AK; Europe; n Asia; n Africa (FNA 2014).

Observations in Montana Natural Heritage Program Database
Number of Observations: 1

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Fens, rock fissures, tundra grasslands (FNA 2014), and moist, calcareous habitats at high elevations (Elliott 2016).

Reproductive Characteristics
Capsule cylindric (FNA 2014), upright to a little inclined, smooth when dry, the neck short and creased (Lawton 1971). Capsules seldom produced (Lawton 1971).

  • Literature Cited AboveLegend:   View Online Publication
    • Elliott, J.C. and A.K. Pipp. 2018. A Checklist of Montana Mosses (1880-2018). Updated 3 January, 2020. Montana Natural Heritage Program, Helena, Montana. 73 pp.
    • Flora of North America Editorial Committee, eds. 2014. Flora of North America North of Mexico. Volume 28. Bryophytes: Mosses, Part 2. Oxford University Press, Inc., NY. xxi + 702 pp.
    • Lawton, E. 1971. Moss Flora of the Pacific Northwest. Hattori Botanical Laboratory. Japan: Yamabuki-cho, Shinjuku-ku, Tokyo. 362 pages plus appendices.
    • Vitt, D. J. Marsh, and R. Bovey. 1988. Mosses, Lichens & Ferns of Northwest North America. Seattle, WA: University of Washington Press. 296 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Hill, M.O., C.D. Preston, & A.J.E. Smith. 1994. Atlas of the Bryophytes of Britain and Ireland. Volume 3: Mosses (Diplolepideae). Harley Books, England.
    • Ireland, R.R., G.R. Brassard, W.B. Schofield, D.H. Vitt. 1987. Checklist of the Mosses of Canada II. Lindbergia 13:1-62.
    • Lawton, E. 1971. Keys for the Identification of the Mosses on the Pacific Northwest. Reprinted from 'Moss Flora of the Pacific Northwest'. Published as Supplement No. 2 of the Journal of the Hattori Botanical Laboratory. Nichinan, Miyazaki, Japan. 66 pp.
    • Noguchi, A. 1991. Illustrated Moss Flora of Japan. Part 4. The Hattori Botanical Laboratory, Hiroshima, Japan. p. 743 - p. 1012.
    • Nyholm, E. 1954-69. Illustrated Moss Flora of Fennoscandia. II. Musci. Fascicles1- 4. Gleerups, Lund; Fascicles 5-6, Swedish Natural Science Research Council, Stockholm.
    • Smith, A.J.E. 1980. The Moss Flora of Britain and Ireland. Cambridge University Press, Cambridge. 705 pp.
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Citation for data on this website:
A Mousetail Moss — Myurella tenerrima.  Montana Field Guide.  .  Retrieved on , from