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The Cultivated Species of the Fern Genus Dryopteris in the United States
Vol 89, Page 1, Date 1999
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Some Commercial Uses of Pteridophytes in Central America
Vol 89, Page 101, Date 1999
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Genet Composition of Diphasiastrum complanatum in Western Hungary: A Case Study
Vol 89, Page 106, Date 1999
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Spore Age and Sterilization Affects Germination and Early Gametophyte Development of Platycerium bifurcatum
Vol 89, Page 124, Date 1999
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Isoetes in Alaska and the Aleutians
Vol 89, Page 133, Date 1999
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Spore Germination and Early Gametophyte Development in Stromatopteris
Vol 89, Page 142, Date 1999
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Effects of Temperature on Spore Germination in Some Fern Species from Semideciduous Mesophytic Forest
Vol 89, Page 149, Date 1999
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Studies on Cryptogramma crispa Spore Germination
Vol 89, Page 159, Date 1999
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SEM Studies on Vessels in Ferns. 13. Nephrolepis
Vol 89, Page 171, Date 1999
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The Ferns and Allied Plants of New England
Vol 89, Page 178, Date 1999
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Ferns of the Tropics
Vol 89, Page 179, Date 1999
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Two New Fern Species from Southern Mexico
Vol 89, Page 181, Date 1999
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Rush Quillwort (Isoetes junciformis, sp. nov.), a New Pteridophyte from Southern Georgia
Vol 89, Page 187, Date 1999
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Some Observations on the Reproductive Anatomy of Isoetes andicola
Vol 89, Page 198, Date 1999
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Ontogeny of the Sporangia of Sphaeropteris cooperi
Vol 89, Page 204, Date 1999
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Salvinia minima in Arkansas
Vol 89, Page 215, Date 1999
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Two Additional Stations for the Southern Woodfern Hybrid, Dryopteris Xaustralis in Maryland
Vol 89, Page 216, Date 1999
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Interpopulational Comparison of Dose-Mediated Antheridiogen Response in Onoclea sensibilis
Vol 89, Page 221, Date 1999
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Phylogeny of Aspleniaceae Inferred from rbcL Nucleotide Sequences
Vol 89, Page 232, Date 1999
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New Records of Pteridophytes from Bolivia
Vol 89, Page 244, Date 1999
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Blechnum penna-marina in Peru
Vol 89, Page 267, Date 1999
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Salvinia adnata Desv. versus S. molesta D. S. Mitch
Vol 89, Page 268, Date 1999
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Illustrierter Leitfaden zum Bestimmen der Farne und farnverwandten Pflanzen der Schweiz und agrenzender Gebiete
Vol 89, Page 270, Date 1999