
Four more North American species are distributed and published herein giving a total of 62 species for Fascicles I-IV. Included is the isotype for Sphagnum andersonianum Andrus. Sphagnum junghuhnianum Dozy and Molk. from British Columbia and its relationships to other Acutifolia are discussed. Sphagnum austinii Sull. is noted as the correct name for No. 189, already issued as S. carlottae Andrus nov. sp.
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