Lycopodium alpinum — Details

Diphasiastrum alpinum (L.) Holub:
Canada (North America)
United States (North America)

Flora of North America Editorial Committee, e. 1993. Pteridophytes and Gymnosperms. 2: i–xvi, 1–475. In Fl. N. Amer. Oxford University Press, New York. http://www.tropicos.org/Reference/10884

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Lycopodium alpinum L.:
Canada (North America)
Greenland (North America)
United States (North America)

Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
Lellinger, D. B. 1985. A Field Manual of the Ferns and Fern Allies of the United States and Canada. 389 pp. http://www.tropicos.org/Reference/1316
Taylor, T. M. C. 1970. Pacific Northwest Ferns and Their Allies. 247 pp. http://www.tropicos.org/Reference/1292
Tolmatchev, A. I. 1960. Arktic. Fl. SSSR 1:1–102. http://www.tropicos.org/Reference/10147

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National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Source: NatureServe

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Physical Description

Morphology

Comments

The branchlet leaves of Diphasiastrum alpinum are unique in the genus, and the trowel-shaped underside leaves with their flared and rolled blades and contracted bases are particularly unusual. The leaves of the other North American species are much simpler in shape and contour.

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Description

Horizontal stems mainly shallowly buried, 0.5--3 mm wide, sometimes emerging, 1.1--2.2 mm wide; leaves appressed, spatulate to lanceolate, 1.5--3.8 X 0.5--1.4 mm, apices truncate. Upright shoots 6--14 cm, clustered, fasciculate, branching successively 3--5 times; leaves on upright main stem ascending, deltate-ovate, 3.5--4 X 0.8 mm, apices needlelike. Branchlets square in cross section, 1.8--4 mm wide, annual bud constrictions abrupt and conspicuous; underside often glaucous, concave; upperside green, dull to faintly shiny, convex. Leaves on branchlets 4-ranked, overlapping; upperside leaves appressed, lanceolate, 3--5.8 mm, free portion of blades 1.7--2.9 X 0.1--1.1 mm; lateral leaves strongly divergent, 3.3--6.5 X 1.8--2.4 mm, margins revolute; underside leaves well developed, perpendicular to stem, 1.3--3.3 X 0.6--1.3 mm, unique in genus in having base contracted, blade flaring, and margins becoming parallel. Peduncles absent. Strobili solitary, 5--30 X 2--4 mm, sterile tips absent. Sporophylls deltate to nearly cordate, 2.2--3.5 X 1.6--3 mm, apices gradually tapering. 2 n = 46.

Flora of North America @ eFloras.org

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Diagnostic Description

Synonym

Lycopodium alpinum Linnaeus, Sp. Pl. 2: 1104. 1753

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Ecology

Associations

Foodplant / saprobe
immersed, hypophyllous pseudothecium of Phaeosphaeria lycopodina is saprobic on locally blackened bract of Diphasiastrum alpinum
Remarks: season: summer

Source: BioImages - the Virtual Fieldguide (UK)

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Diphasiastrum alpinum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Species: 2
Species With Barcodes: 1

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Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Source: NatureServe

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Source: NatureServe

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Wikipedia

Diphasiastrum alpinum

Diphasiastrum alpinum, Alpine Clubmoss, is a species of clubmoss.^[1] It has a circumboreal distribution, occurring throughout northern latitudes in the Northern Hemisphere. It is an indicator of alpine tundra and boreal climates.^[2] It is found in mountains and moors often with Calluna and grasses.^[3]

This plant grows 10 to 20 cm tall from stems which grow just under the surface of the ground. The leaves are hollow at the bases.^[2] The female stems produce strobili up to 3 cm long.^[4]

This species may hybridize with Diphasiastrum sitchense.^[2]

References

^ "Diphasiastrum alpinum". Flora of North America. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200002738. Retrieved 13 July 2011.
^ ^a ^b ^c Williams, Tara Y. 1990. Lycopodium alpinum. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.
^ "Species: Diphasiastrum alpinum (Clubmoss, alpine)". NLBIF. http://nlbif.eti.uva.nl/bis/flora.php?menuentry=soorten&id=1449. Retrieved 13 July 2011.
^ Lycopodium alpinum. Washington Burke Museum.

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Lycopodium alpinum

REDIRECT Diphasiastrum alpinum

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