Petite Pocket Moss - Fissidens bryoides
MNPS Threat Rank
Plants: Stems ascending to erect, 3-11 x 0.9-3.2 mm, simple and branched. Light to dark green.
Leaves: When dry, leaves are crisped and contorted. Leaves paired (up to 20 pairs), lanceolate, oblong-lanceolate, to oblong-lingulate, and 0.8-2.7 x 0.2-0.5 mm. Apex acute to short-acuminate or obtuse-apiculate. Vaginant lamina about 1/2 the length of leaf. Margin entire though usually serrulate near the apex and with a border. Dorsal lamina is slightly decurrent. Costa ending 6 or less cells from the apex to excurrent.
Leaf Cells: Laminal cells of 1-layer, smooth, slightly bulging, irregularly hexagonal with some being elongate. Margin of 1-3 layers in X-S.
Because of their vaginant leaf, Fissidens are often confused for liverworts, particularly Diplophyllum.
Greenland; Canada: AB, BC, NB, NL (Nfld.), NT, NS, NU, ON, PE, QC, YT; United States: AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY; Mexico; West Indies; Central America; South America; Europe; Asia (FNA 2007). In Montana, known from Carter, Fallon, Flathead, Glacier, Lake, Lincoln, Ravalli, and Valley Counties (Elliott 2016).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
On soil, stones, and rocks in moist, shaded sites and along streams, sometimes inundated. Rarely around tree bases.
Seta 1.4-10 mm tall. Capsules exserted, erect, radially symmetrical to somewhat inclined, and 0.2-1.2 long. Calyptra cucullate, smooth, and 0.5 mm or less long. Polyoicous.
Naked antheridia and archegonia often in axils of distal leaves with 1-2 sporophytes per perichaetium.
- 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. 2007. Flora of North America North of Mexico. Volume 27. Bryophytes: Mosses, Part 1. Oxford University Press, Inc., NY. xxi + 713 pp.
- Additional ReferencesLegend: View Online Publication
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- 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.