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Studies on the taxonomy and distribution of Sphagnum. IV. Sphagnum majus, Sphagnum annulatum, Sphagnum mendocinum and Sphagnum obtusum in North America. Nova Hedwigia, 14: 187-214.

Écologie des tourbières du Québec-Labrador - Pagina 556
de Serge Payette, Line Rochefort - 2001 - 621 pagini
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Special Report

1985 - 388 pagini

...A. and D. Love (1975) Cytotaxonomical Atlas of the Arctic Flora. Vaduz: J. Cramer. Maass, WSG (1967) Studies on the taxonomy and distribution of Sphagnum....obtusum in North America. Nova Hedwigia, 14: 187-214. Matveyeva, NV (1979) An annotated list of plants inhabiting sites of natural and anthropogenic disturbances...

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