Diphasiastrum sitchense

Diphasiastrum sitchense, the Sitka clubmoss, is a pteridophyte species native to northern North America and northeastern Asia. It is a terrestrial herb spreading by stolons running on the surface or the ground or just slightly below the surface. Leaves are appressed, broadly lanceolate, up to 3.2 mm (0.13 inches) long. Strobili are solitary on the ends of shoots.[3] It is known from every province in Canada, plus the US States of Alaska, Oregon, Washington, Idaho, Montana, Maine, New Hampshire, Vermont, and New York.[4][5] It is also found in Greenland, St. Pierre and Miquelon, Yukon, Japan, and the Kamchatka Peninsula of Asiatic Russia.[2] It can be found in alpine meadows, open rocky barrens, and coniferous woodlands.[6][7]

Diphasiastrum sitchense
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Lycophytes
Class: Lycopodiopsida
Order: Lycopodiales
Family: Lycopodiaceae
Genus: Diphasiastrum
Species:
D. sitchense
Binomial name
Diphasiastrum sitchense
(Rupr.) Holub 1975
Synonyms[1][2]
  • Lycopodium sabinifolium subsp. sitchense (Rupr.) Calder & Roy L. Taylor
  • Lycopodium sabinifolium var. sitchense (Rupr.) Fernald
  • Lycopodium sabinaefolium subsp. sitchense (Rupr.) Calder & Roy L. Taylor
  • Lycopodium sabinaefolium var. sitchense (Rupr.) Fernald
  • Lycopodium sitchense Rupr. 1845
  • Diphasium sitchense (Rupr.) A. & D. Löve

References
  1. Tropicos
  2. Family Lycopodiaceae, genus Lycopodium; world species list
  3. Wilce, J. H. 1965. Section Complanata of the genus Lycopodium. Beihefte zur Nova Hedwigia 19: i--ix, 1--233, plate 40.
  4. Beitel, J. M. 1979. The clubmosses Lycopodium sitchense and L. sabinaefolium in the upper Great Lakes area. Michigan Bot. 18: 3--13.
  5. Biota of North America Program 2014 state-level distribution map
  6. Flora of North America, Diphasiastrum sitchense (Ruprecht) Holub, 1975. Sitka club-moss, lycopode de Sitka
  7. Holub, J. 1975. Diphasiastrum, a new genus in Lycopodiaceae. Preslia 14: 97--100.


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