Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Ear-leaf Boat Moss - Hygrohypnum cochlearifolium
Other Names:  Ear-leaf Hygrohypnum Moss

Potential Species of Concern
Native Species

Global Rank: G4
State Rank: SH

Agency Status
MNPS Threat Rank:

External Links

General Description
Plant: Soft mats, yellow to yellow-green. Stems usually less than 5 cm, usually unbranched or seldom irregularly branched. Costa often forked near base.

Leaf: Spoon-shaped (cochleariform), ovate, broadly ovate to almost orbicular. (0.5-)0.8-1.2(-1.5) x (0.3-)0.6-l(1.3) mm. Loosely imbricate to erect-spreading. Small leaves recurved, larger leaves usually planed; entire. Apex rounded or obtuse, seldom acute (FNA 2014).

Leaf Cells: Alar region not clearly defined with cells few, quadrate or nearly so or irregular. Basal laminal cells short fusiform, linear flexuose, or rhombic, length variable, 26-48(-55) x (4-)5-6(-8) ┬Ám. Apical cells shorter to more rhombic.

Diagnostic Characteristics
This species has the deepest leaf concavity in the genus.

Species Range

Range Comments
A montane-widespread disjunct (Belland 1998). Canada: NU, YT; USA: AK, CO, MT; Europe (FNA 2014). In Montana: Flathead, Lincoln, and Park Counties (Elliott 2016).

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)

Acidic rock in mountain streams (Elliott 2016) and wet places in the mountains that are influenced by a Pacific maritime climate.

Reproductive Characteristics
Seta/Capsule: Seta yellowish to reddish. Capsule with 2-3 endostome cilia.

  • Literature Cited AboveLegend:   View Online Publication
    • Belland, R. J. 1998. The Rare Mosses of Canada - A Review and First Listing. Committee on the Status of Endangered Wildlife in Canada. 91 pp.
    • 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.
  • Web Search Engines for Articles on "Ear-leaf Boat Moss"
Login Logout
Citation for data on this website:
Ear-leaf Boat Moss — Hygrohypnum cochlearifolium.  Montana Field Guide.  .  Retrieved on , from