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Notes on Micronesian Pteridophyta, III. Ophioglossum nudicaule in the Caroline Islands
Vol 64, Page 1, Date 1974
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A Redefinition of the Genus Hemionitis
Vol 64, Page 3, Date 1974
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Axenic Culture of the Aquatic Fern, Salvinia
Vol 64, Page 13, Date 1974
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Two New Polystichums from the Himalayas
Vol 64, Page 15, Date 1974
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A Peculiar New Species of Trichomanes sect. Selenodesmium and Several of Its Probable Hybrids
Vol 64, Page 18, Date 1974
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Sieve-Tube Members in the Stem of Cyathea gigantea
Vol 64, Page 27, Date 1974
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Lycopodium crassum in Mexico
Vol 64, Page 29, Date 1974
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Cystopteris bulbifera New to Nebraska
Vol 64, Page 30, Date 1974
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A New Combination in Tectaria
Vol 64, Page 31, Date 1974
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The Natural History of Ophioglossum palmatum in South Florida
Vol 64, Page 33, Date 1974
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Photosynthesis and Respiration of Ferns in Relation to Their Habitat
Vol 64, Page 40, Date 1974
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Taxonomic Revision of the Polypodiaceous Genera of India-VI. Lepisorus excavatus Group
Vol 64, Page 49, Date 1974
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The Correct Name of a Lycopodium New to Panama
Vol 64, Page 64, Date 1974
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Some Aspects of the Ecology of Ophioglossum engelmannii in the Cedar Glades of Kentucky and Tennessee
Vol 64, Page 65, Date 1974
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A Newly Recognized Gleichenia Hybrid from Cuba
Vol 64, Page 74, Date 1974
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Publication of the Ferns and Fern-Allies in the "Primitiae Florae Costaricensis"
Vol 64, Page 77, Date 1974
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Chromosomes of the Male Fern from the Western United States
Vol 64, Page 81, Date 1974
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A Revised Classification of Thelypteris Subgenus Amauropelta
Vol 64, Page 83, Date 1974
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Ferns of the Bahamas including Caicos and Turks Islands
Vol 64, Page 97, Date 1974
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Geographic Patterns in Temperate American Ferns and Some Relationships in Thelypteris
Vol 64, Page 99, Date 1974
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A New Form of Asplenium montanum from New York
Vol 64, Page 105, Date 1974
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Notes on the Distribution of the Pteridophytes of Suriname
Vol 64, Page 107, Date 1974
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The Phylogeny and Classification of the Ferns
Vol 64, Page 117, Date 1974
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Two Adder's-Tongues New to Missouri
Vol 64, Page 119, Date 1974