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Five new species of Lychnophora from Bahia, Brasil (Vernonieae: Asteraceae)
Vol 53, Page 369
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A new species of Chresta from Bahia, Brasil (Vernonieae: Asteraceae)
Vol 53, Page 385
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Studies in the Heliantheae (Asteraceae). XXX. A new species of Ichthyothere [I. granvillei] from Cayenne
Vol 53, Iss 6, Page 388
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Studies in the Eupatorieae (Asteraceae). CCXVI. New combinations for South American species
Vol 53, Iss 6, Page 392
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Three new species of Vernonia from South America (Vernonieae: Asteraceae)
Vol 53, Iss 6, Page 393
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New species and names in Apocynaceae, Asclepiadoideae
Vol 53, Page 401
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Pollen development in a few Acanthaceae
Vol 53, Iss 6, Page 406
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Neotropical Myrsinaceae - IX
Vol 53, Page 411
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Aspects of the weed component of the spontaneous vascular flora of Hancock County, Illinois
Vol 53, Iss 6, Page 417
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Aspects of the weed component of the spontaneous vascular flora of McDonough County, Illinois
Vol 53, Iss 6, Page 423
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Chromosome counts of and notes on some Old World Asters (Asteraceae)
Vol 53, Page 429
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Xyridaceae Venezuelanae—I
Vol 53, Iss 6, Page 432
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New combinations in the lichen genera Hypotrachyna and Parmelina (Parmeliaceae)
Vol 53, Iss 6, Page 445
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Plantae mesoamericanae novae. IX
Vol 53, Iss 6, Page 447