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Alpine Creeping Cedar

Diphasiastrum alpinum (L.) J. Holub

Associations

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

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Comments

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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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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Description

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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.
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cc-by-nc-sa-3.0
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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visit source
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eFloras

Synonym

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Lycopodium alpinum Linnaeus, Sp. Pl. 2: 1104. 1753
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Diphasiastrum alpinum

provided by wikipedia EN

Diphasiastrum alpinum, the alpine clubmoss, is a species of clubmoss.[2] It was first described by Carl Linnaeus in his Flora Lapponica, 1737, from specimens obtained in Finland.

Distribution

It has a circumpolar distribution across much of the northern parts of the Northern Hemisphere: much of Canada, the northwestern United States, northern and central Europe, Russia, China and Japan. It is an indicator of alpine tundra and boreal climates.[3] It is found in mountains and moors often with Calluna and grasses.[1][4][5]

Description

Diphasiastrum alpinum grows 10 to 20 cm (4 to 8 in) tall from stems which grow just under the surface of the ground. The leaves are hollow at the bases.[3] The female stems produce strobili up to 3 cm (1 in)long.[6][7][8]

Diphasiastrum alpinum may hybridize with Diphasiastrum sitchense.[3]

References

  1. ^ a b "Family Lycopodiaceae, genus Lycopodium; world species list". Archived from the original on 2009-02-27. Retrieved 2015-07-27.
  2. ^ "Diphasiastrum alpinum". Flora of North America. Retrieved 13 July 2011.
  3. ^ 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.
  4. ^ "Species: Diphasiastrum alpinum (Clubmoss, alpine)". NLBIF. Archived from the original on 6 May 2011. Retrieved 13 July 2011.
  5. ^ Biota of North America Program 2014 state-level distribution map
  6. ^ Lycopodium alpinum. Washington Burke Museum.
  7. ^ Flora of North America, Diphasiastrum alpinum (Linnaeus) Holub, 1975. Alpine club-moss, lycopode alpin
  8. ^ Flora of China, Lycopodium alpinum Linnaeus, 1753. 高山扁枝石松 gao shan bian zhi shi song

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Diphasiastrum alpinum: Brief Summary

provided by wikipedia EN

Diphasiastrum alpinum, the alpine clubmoss, is a species of clubmoss. It was first described by Carl Linnaeus in his Flora Lapponica, 1737, from specimens obtained in Finland.

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