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Montana Field Guide

Montana Field Guides

Watson's Spikemoss - Selaginella watsonii

Status Under Review
Native Species

Global Rank: G4
State Rank: S3?
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
15 collections at MONTU from southwest and south-central Montana in Beaverhead, Carbon, Deerlodge and Madison counties.
General Description
Plants forming mats. Leaves in indistinct whorls of 4, 1–3 mm long, stiff, oblong to linear, with a short, whitish tip; the medial groove with distinct ridges; margins ciliate. Strobili 1–3 cm long, 4-angled. Sporophylls ovate, ciliate on the lower half or glabrous with a short bristle-tip (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
In MT in Granite, Beaverhead, Madison, and Carbon counties (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 36

(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)

Exposed, rocky sites at middle and upper altitudes in the mountains, sometimes above timberline.

  • Additional ReferencesLegend:   View Online Publication
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    • Lesica, P. 1993. Vegetation and flora of the Line Creek Plateau area, Carbon County, Montana. Unpublished report to USDA Forest Service, Intermountain Research Station. Montana Natural Heritage Program, Helena, Montana. 30 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Schassberger, L.A. 1991. Rare plant inventory of the East Pioneer Mountains. Prepared for the USDA Forest Service, Region 1, Beaverhead National Forest. Montana Natural Heritage Program, Helena, MT. 55 pp.
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Citation for data on this website:
Watson's Spikemoss — Selaginella watsonii.  Montana Field Guide.  .  Retrieved on , from