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Pityrogramma calomelanos, the Primary, Post-Eruption Colonizer of Volcan Chichonal, Chiapas, Mexico
Vol 75, Page 1
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Bilateral Spores in New World Grammitid Ferns
Vol 75, Page 6
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The Atomic Composition of Onoclea sensibilis Spores
Vol 75, Page 12
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Gametophytes of Ophioglossaceae
Vol 75, Page 18
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Ethnopteridology of the Chacobo Indians in Amazonian Bolivia
Vol 75, Page 19
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Special Report: The Present Evolutionary and Taxonomic Status of the Fern Genus Polystichum: The 1984 Botanical Society of America Pteridophyte Section Symposium
Vol 75, Page 22
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Marsilea quadrifolia and M. vestita in the Floras of Kansas and Missouri
Vol 75, Page 28
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Nomenclatural Notes on Some Ferns of Costa Rica, Panama, and Colombia. II
Vol 75, Page 31
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Three New Anemias from Northern South America
Vol 75, Page 33
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Sporopollenin Content of the Spore Apparatus of "Azolla"
Vol 75, Page 38
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Role of Morphological Characteristics of Leaves and the Sporangial Region in the Taxonomy of Isoetes in Northeastern North America
Vol 75, Page 44
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New Species of Thelypteris from Puerto Rico
Vol 75, Page 56
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Dryopteris ludoviciana and D. X australis New to Arkansas
Vol 75, Page 71
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Polystichum aleuticum from Adak Island, Alaska, a Second Locality for the Species
Vol 75, Page 72
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An Unusual Submerged Aquatic Ecotype of Asplenium unilaterale
Vol 75, Page 73
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Index filicum. Supplementum quintum: pro annis 1961-1975
Vol 75, Page 76
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A Newly Discovered Habitat for Isoetes melanopoda in Louisiana
Vol 75, Page 77
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Anatomical Studies of Sphaeropteris and Cnemidaria (Cyatheaceae)
Vol 75, Page 80
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Germination and Morphology of Spores of Trichipteris corcovadensis
Vol 75, Page 92
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Relationships between Ecological Pattern and Branching in the Tree Fern Lophosoria quadripinnata in Veracruz, Mexico
Vol 75, Page 105
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Ontogeny of the Commissure of Equisetum
Vol 75, Page 111
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Wild Gametophytes of Equisetum sylvaticum
Vol 75, Page 120
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Osmunda cinnamomea forma frondosa at Mountain Lake, Virginia
Vol 75, Page 128
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Gametophytes of Equisetum giganteum
Vol 75, Page 132
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Marsilea macropoda New to Louisiana
Vol 75, Page 133