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American Woodsy Plagiomnium Moss - Plagiomnium ciliare

Native Species

Global Rank: G5
State Rank: SNR

Agency Status
MNPS Threat Rank:

External Links

General Description
Plant: Loose tufts. Green with yellow-green. Fertile stems 2-5 cm tall with prostrate stems to 10 cm long. Rhizoids numerous.

Leaf: When dry, leaves contorted. When moist, leaves ovate to oblong-elliptic and 4-7 x 3-4.5 mm. Apex mostly rounded with a cuspidate point. Fertile leaves strongly decurrent to about 1 mm; sterile leaves less decurrent. Margins bordered and mostly toothed with single teeth that are sharp, 1-3 cells long. Costa percurrent to shortly excurrent in the cuspidate tip.

Leaf Cells: Leaf cells more-or-less elongate, in diagonal rows. Median laminal cells near costa are 50-85 ┬Ám long with pitted walls, corner cell walls thickened. Cells become smaller towards margin and are less pitted. Marginal cells are long and narrow forming 2-4 rows in two or more layers.

Diagnostic Characteristics
All Plagiomnium species are characterized by single-toothed margins.

Range Comments
Canada: AB, BC, MB, NB, NL, NT, NS, ON, PE, QC, SK; USA: AL, AK, AZ, AR, CT, DE, FL, GA, IL, IN, IA, KS, LA, ME, MD, MI, MN, MS, MO, MT, NE, NH, NY, NC, OH, OK, OR, PA, SD, TN, TX, VA, WA, WV (FNA 2014). In Montana, known from Broadwater, Flathead, Glacier, Granite, Lake, and Powell Counties (Elliott 2016).

Observations in Montana Natural Heritage Program Database
Number of Observations: 3

(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)

On wet soil in the woods, but sometimes along streams.

Reproductive Characteristics
Dioicous. Seta is 2-4 cm, brown-green, and with 1-3 perichaetia. Capsules are pendant, yellow to yellow-brown, cylindric with a short, darker colored neck, and 3-4.5 mm long.

  • 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.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • 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.
    • Lawton, E. 1971. Moss Flora of the Pacific Northwest. Hattori Botanical Laboratory. Japan: Yamabuki-cho, Shinjuku-ku, Tokyo. 362 pages plus appendices.
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Citation for data on this website:
American Woodsy Plagiomnium Moss — Plagiomnium ciliare.  Montana Field Guide.  .  Retrieved on , from