Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Lime-Seep Eucladium Moss - Eucladium verticillatum
Other Names:  Whorled Tufa Moss

Species of Concern
Native Species

Global Rank: G4
State Rank: S1

Agency Status
MNPS Threat Rank:

External Links

General Description
Plants: Dense tufts. Typically yellow-green to glaucous-green or whitish from encrusted lime. Often there is a distinct color change between the pellucid green laminal cells and the hyaline basal cells. Stems erect, 0.7-6.0 cm tall, and leaves often branched in whorls.

Leaves: Appressed when dry and erect-spreading when moist. Oblong to linear-lanceolate or linear-subulate, 1.2-2.5 mm long. Leaves flat or distally channeled. Costa strong, percurrent to slightly excurrent, and is at least 1/3 the width at leaf base. Margins plane and entire, but serrulate above the base on the upper margins of the hyaline cells. Apex broadly to narrowly acute or subulate.

Leaf Cells: Basal cells distinctly differentiated from costa to margin: hyaline, elongate, bulging rectangular, to rhomboidal, smooth, and thin-walled. Median and upper cells have irregularly thicker walls and are quadrate to rectangular, but decrease in size from costa to margin; papillose with several papillae on abaxial/adaxial surfaces. X-S: Cell size decreases from costa towards margin. Marginal cells smaller and appear to sometimes form a border.

Capsules mature from June to August (FNA 2007).

Diagnostic Characteristics
Stem size can be variable, but leaf size usually doesn’t change, unlike drought-tolerant species in the Pottiaceae family (FNA 2007).

Species Range

Range Comments
Canada: AB, BC, NL (Nfld.), ON; United States: AL, AZ, AR, CA, CO, FL, ID, IL, IN, KS, KY, MI, MS, MO, NV, NM, OH, OK, TN, TX, UT, VA, WA, WI; Mexico; Bermuda; Central America; Europe, Asia; n, s Africa; Atlantic Islands (Macaronesia) (FNA 2007). In Montana, known from Granite, Missoula, 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)

Found on dripping calcareous or granitic rock faces or mortar and around (warm) springs having year-round seepage. Occurs from 0 to 6230 feet (FNA 2007).

Reproductive Characteristics
Seta about 1 cm tall, yellow to red-brown, and usually not twisted. Capsules age to red-brown, 0.8-1.8 mm long.

Infrequently produces sporophytes.

  • 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
    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 "Lime-Seep Eucladium Moss"
Login Logout
Citation for data on this website:
Lime-Seep Eucladium Moss — Eucladium verticillatum.  Montana Field Guide.  .  Retrieved on , from