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Wilhelm-Philippe, Schimper Versuch Einer Entwickelungs?geschichte Der Torfmoose (sphagnum) ?und Einer Monographie Der In Europa Vorkommenden Arten Dieser Gattung.
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Hobkirk, Charles Codrington Pressick A Synopsis of the British Mosses, Containing Descriptions of all the Genera and Species, (with Localities of the Rarer Ones) Found in Great Britain ... Britannica," Schimper's "Synopsis," Etc