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Montana Field Guide

Montana Field Guides

Stiff Clubmoss - Lycopodium annotinum


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

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General Description
Stiff club-moss, a perennial, has elongated horizontal stems trailing on the ground, rooting at intervals, mostly unbranched. Upright shoots are clustered, mainly unbranched or sparsely branched near the base, 1.2-1.6 cm in diameter and to 20 cm or more in height; annual bud constrictions abrupt and conspicuous. Lateral branchlets few but without the annual constrictions. Leaves dark green, spreading to reflexed, linear-lanceolate (lance-shaped) 2.5 x 6 mm, stiff, sharp pointed, lacking a hair tip. Strobili (cone-like structure composed of overlapping scales bearing spore-containing structures) sessile at the ends of the shoots, solitary, 15-30 x 3.5-4.5 mm. Sporophylls (scales of the strobili) to 3.4 x 2 mm, abruptly narrowed to pointed tips.

Species Range
Present
 


Range Comments
In northwestern MT sporadically east to Stillwater County; AK to Greenland south to AZ, NM, OH, TN (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 22

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Mesic to wet forest; valleys to subalpine, occasionally alpine. A small form of this species can be found growing in Sphagnum moss at the margin of fens (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Stiff Clubmoss — Lycopodium annotinum.  Montana Field Guide.  .  Retrieved on , from