Specimen florae Americae Septentrionalis cryptogamicae; sistens: muscos hepaticos, huc usque in Am. Sept. observatos; or, Specimen of a systematic arrangement and description of the cryptogamous plants of North-America; comprising a diagnostic description of all the hepatic mosses hitherto observed in North-America; with ampler descriptions of a number of new species, by Lewis D. de Schweiniz ..