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The structure and development of mosses and ferns (Archegoniatae) (Macmillan, 1895)

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Studies in the bryology of New Zealand,with special reference to the herbarium of Robert Brown of Christchurch, New Zealand - Dixon, H. N. (Hugh Neville), 1861 -1944 (J. Mackay, 1913)

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Die Süsswasser-Flora, Deutschlands, Österreichs und der Schweiz - Pascher, Adolf, 1881 -1945 (Fischer, 1914)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1908)

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Syllabus de Pflanzenfamilien, eine Übersicht über das gesamte Pflanzensystem mit besonderer Berücksichtigung der Medizinalund Nutzpflanzen nebst einer Ubersicht über die Florenreiche und Florengebiete der Erde zum Gebrauch bei Vorlesungen und Studien über spezielle und medizinisch-pharmazeutische Botanik - Engler, Adolf, 1844 -1930 (Borntraeger, 1919)

Syllabus der Pflanzenfamilien : eine Übersicht über das gesamte Pflanzensystem mit Berücksichtigung der Medizinal- und Nutzpflanzen, nebst einer Übersicht über die Florenreiche und Florengebiete der Erde : zum Gebrauch bei Vorlesungen und Studien über spezielle und medizinisch-pharmazeutische Botanik - Engler, Adolf, 1844 -1930 (Gebrüder Borntraeger, 1904)

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Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1984)

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