Species: Lycopodiella inundata (L.) Holub

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Lycopodiella inundata (L.) Holub

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TAXONOMY

Family:

Lycopodiaceae

Genus:

Lycopodiella

Species Synonyms:

Lycopodium inundatum L.
Lepidotis inundata (L.) C. Borner

Common Names:

inundated clubmoss
northern bog clubmoss

DISTRIBUTION

Canada:

northwestern – southern British Columbia, northeastern Alberta – northern Saskatchewan, western Ontario – Labrador – Newfoundland – Nova Scotia

Saskatchewan:

northern Saskatchewan; Lake Athabasca – Hasbala Lake – Windrum Lake

Ecoregion:

Athabasca Plain, Churchill River Upland, Selwyn Lake Upland, Tazin Lake Upland

HABITAT

Saskatchewan:

wet bogs, fens, and organic lake shores

Associated Species:

Carex echinata, Drosera rotundifolia, Huperzia selago, Trichophorum alpinum

RARITY STATUS

Provincial Status According
to Harms (2003):

Threatened

Nature Conservancy Status:

G5 S1

Saskatchewan Species at
Risk Status:

None

COSEWIC Status:

None

Lycopodiella inundata is threatened in Saskatchewan because it is rare and regionally restricted to the north. Local population sizes vary. No immediate threats are known at the present time.

SPECIES DESCRIPTION

Roots:

adventitious

Stems:

stems horizontal, flat on ground, 3 – 12 cm long, slender; sterile erect branches absent

Leaves:

monomorphic, spreading, 5 – 6 mm long, linear to subulate, twisted towards the upper side of stem, margins entire

Strobili:

1 – 3 cm long, sessile; sporophylls spreading to spreading-ascending, expanded at base, similar to leaves margins rarely toothed; peduncles 1 per plant, 3.5 – 6 cm long

Spores:

sulphur-yellow

LYCOPODIACEAE KEY FOR GENERA FOUND IN SASKATCHEWAN

1 Horizontal stems absent; sporangia borne in axils of the leaves	Huperzia
1 Horizontal stems present; sporangia borne in strobili	2

2 Strobili green, not much different from stems; sporophylls leaf-like; rhizomes lacking	Lycopodiella
2 Strobili yellow, differentiated from stems; sporophylls scale-like; rhizomes present	3

3 Leaves 6-ranked or more, not imbricate; peduncles pseudomonopodial	Lycopodium
3 Leaves 4 – 5-ranked, imbricate (except in D. sitchense); peduncles dichotomously branched	Diphasiastrum