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| Huperzia selago var. densa Trevisan | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||||||||
| Family: | Lycopodiaceae | ||||||||
| Genus: | Huperzia | ||||||||
| Species Synonyms: | Huperzia selago ssp. arctica
(Grossh.) A.&D. Love Lycopodium appressum (Desv.) Petrovic Lycopodium arcticum Grossh. Lycopodium selago ssp. appressum (Desv.) Hulten Lycopodium selago var. appressum Desv. Lycopodium selago ssp. arcticum (Grossh.) Tolm. |
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| Common Names: | northern clubmoss fir clubmoss mountain clubmoss |
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| DISTRIBUTION | |||||||||
| Canada: | Yukon – Ungava – Labrador, south to British Columbia – Nova Scotia – Newfoundland | ||||||||
| Saskatchewan: | northern Saskatchewan; Lake Athabasca – Hasbala Lake – Cree Lake | ||||||||
| Ecoregion: | Athabasca Plain, Churchill River Upland, Selwyn Lake Upland, Tazin Lake Upland | ||||||||
| HABITAT | |||||||||
| Saskatchewan: | moist coniferous woods, fens, and organic shores | ||||||||
| Canada: | cold woods, mossy rocks, and barrens | ||||||||
| RARITY STATUS | |||||||||
| Provincial
Status According to Harms (2003): |
Threatened |
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| Nature Conservancy Status: | G5TU S1 T1 |
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| Saskatchewan
Species at Risk Status: |
None |
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| COSEWIC Status: | None |
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| Huperzia selago var. densa is threatened because of rarity in Saskatchewan. It is only somewhat regionally restricted and is usually locally numerous within limited areas. No immediate threats are known. | |||||||||
| SPECIES DESCRIPTION | |||||||||
| Height: | 8 – 12 cm | ||||||||
| Roots: | adventitious from short creeping stem (2 – 5 cm long) | ||||||||
| Stems: | erect, tufted, simple below, repeatedly forked upwards | ||||||||
| Leaves: | leaves of mature portion slightly smaller and spreading to appressed-ascending; leaves of juvenile portion larger and more reflexed; to 5 mm long, largest leaves ovate to lanceolate, widest at base, apex acute, green to yellowish-green, lustrous, margins entire | ||||||||
| Sporangia: | borne in the axils of stem leaves, strobili absent | ||||||||
| Spores: | sulphur-yellow | ||||||||
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