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Montana Field Guides

Donn's Small Limestone Moss - Seligeria donniana

Status Under Review
Native Species

Global Rank: G4G5
State Rank: SU
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
Distribution data in BIOTICS had Distribution Confidence as "Reported but unconfirmed" with no explanatory notes. FNA 2014 does show this species in Montana.
General Description
Plants: Acrocarpous (Vitt 1988), minute, growing in crowded clumps or cushions of upright shoots, olivaceous. Stems seldom 2- or 3-forked (FNA 2007), to 1.5 mm in height (Crum and Anderson et al. 1981) but frequently under 1 mm (Lawton 1971).

Leaves: Rigidly upright to spreading a little when dry, usually spreading to about 45 degrees or more with the distal end curved back and downward when damp, 0.4-1 mm in length, lance-shaped and very narrow or with ovate tendencies, forming a sturdy subula with an obtuse (but nearly acute) leaf tip; leaf edges flat (FNA 2007) or curved up and inward (Lawton 1971), finely saw-toothed below (FNA 2007) and sometimes above (Lawton 1971); costa fully occupying the subula and terminating in the apex (FNA 2007).

Leaf Cells: Laminal cells with length 1-2 times that of the width (FNA 2007) or distal cells up to 3 times as long (Lawton 1971), oblong and very thin near the attachment (Crum and Anderson et al. 1981).

Diagnostic Characteristics
Identifying Seligeria to species requires sporophytes (FNA 2007).

Range Comments
North American Range

YT and NT, s to WA and MT, also CO, ON to NL, IA, MO, MI, OH to NY, and TN (FNA 2007). Known in Montana from Flathead County (Elliott and Pipp 2016).

Observations in Montana Natural Heritage Program Database
Number of Observations: 2

(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)

Calcareous rocks and sandstone in shady (Lawton 1971) sheltered areas, such as stone fissures (FNA 2007), also on rocky bluffs (Crum and Anderson et al. 1981).

Reproductive Characteristics
Autoicous. Perichaetial bracts akin to stem leaves except bigger. Seta a little bent and twisted or straight (FNA 2007), about 1.5-3 mm tall (Crum and Anderson et al. 1981). Capsule a little broader than long, the opening not the widest part when young, but becoming so when old (FNA 2007) and then appearing nearly hemispherical; operculum with beak upright or tilted (Lawton 1971), non-papillose; peristome wanting (FNA 2007).

  • Literature Cited AboveLegend:   View Online Publication
    • Crum, H.A. and L.E. Anderson. 1981. Mosses of Eastern North America. 2 volumes. Columbia University Press, New York. 1328 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. 2007. Flora of North America North of Mexico. Volume 27. Bryophytes: Mosses, Part 1. Oxford University Press, Inc., NY. xxi + 713 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?
    • 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.
    • 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:
Donn's Small Limestone Moss — Seligeria donniana.  Montana Field Guide.  .  Retrieved on , from