E-Flora BC: Electronic Atlas of the Flora of British Columbia

Diphasiastrum complanatum (L.) Holub
Lycopodiaceae (Club-moss family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #75166)

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Distribution of Diphasiastrum complanatum
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Species Information

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Evergreen perennial from horizontal stems about 2 mm wide, shallowly buried; upright shoots branched several times more or less in one plane, 10-35 cm tall; branches flattened, sometimes darker green on the convex sides and lighter on the concave sides.
Leaves on the convex side and on the edges of the branches triangular, unstalked, those on the concave side reduced and scale-like.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry to mesic forests, rocky slopes, sandy openings and clearings, and margins of peat bogs in the lowland, steppe and montane zones; frequent throughout BC, rare on Vancouver Island and Queen Charlotte Islands; circumpolar, N to AK, YT and NT, E to NF and S to NY, MI, MT, and WA; Eurasia, S America.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Diphasiastrum complanatum

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 6 963 2210
Slope Gradient (%) 0 15 100
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 203 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 7
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BAFA(1), BWBS(175), CWH(42), ESSF(184), ICH(243), IDF(18), MH(3), MS(88), SBPS(50), SBS(450), SWB(30)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is montane boreal & cool temperate.

Synonyms and Alternate Names

Lycopodium complanatum L.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References