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A tribute to Howard Crum
Vol 18, Page 3, Date 1992
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Crumuscus vitalis gen. et sp. nov. (Ditrichaceae)
Vol 18, Page 39, Date 1992
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Key to the moss genera of North America north of Mexico
Vol 18, Page 43, Date 1992
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A contribution toward a history of the Arctic moss flora
Vol 18, Page 73, Date 1992
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Hypnum plicatulum in eastern North America
Vol 18, Page 87, Date 1992
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Observation on Sphagnum fitzgeraldii
Vol 18, Page 91, Date 1992
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What is Lejeunea trigona (Studies on Lejeuneaceae subfam. Ptychanthoideae XXII)
Vol 18, Page 99, Date 1992
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Studies on Geocalycaceae VII. Subspecific differentiation of Chiloscyphus semiteres together with further refinements on Chiloscyphus (s. lat.)
Vol 18, Page 107, Date 1992
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A revision of Ochrobryum (Leucobryaceae)
Vol 18, Page 113, Date 1992
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Reproductive biology of the rare "copper moss" Mielichhoferia mielichhoferiana
Vol 18, Page 131, Date 1992
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Beeveria (Hookeriaceae), a new genus from New Zealand
Vol 18, Page 141, Date 1992