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Revision of Pterandra (Malpighiaceae)
Vol 21, Page 1
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Excentradenia, a new genus of Malpighiaceae from South America
Vol 21, Page 29
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Notes on Neotropical Malpighiaceae VI
Vol 21, Page 37
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THE SUMMIT FLORA OF MT. MURUD, SARAWAK, MALAYSIA
Vol 21, Page 85
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Aristolochia davilae (Aristolochiaceae), a new species from Nayarit, Mexico
Vol 21, Page 143
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Miscellaneous notes on Sphagnum 10
Vol 21, Page 147
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Catalog of the Acanthaceae of Belize with taxonomic and phytogeographic notes
Vol 21, Page 161
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A revision and redefinition of Pseudabutilon (Malvaceae)
Vol 21, Page 175
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New species and new records for the Malvaceae of Baja California Sur
Vol 21, Page 197
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Revision and phylogeny of Anomodon and Herpetineuron (Anomodontaceae, Musci)
Vol 21, Page 205
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Species delimitation, and new taxa and combinations in Leucaena (Leguminosae)
Vol 21, Page 277
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Two new species of Carex (Cyperaceae) from Mexico
Vol 21, Page 291
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Carex molestiformis (Cyperaceae), a new species of section Ovales from the Ozark Mountain region
Vol 21, Page 299
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Nomenclatural changes in Mexican Dioscoreaceae and Leguminosae
Vol 21, Page 309
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A NEW SPECIES OF APPENDICULA (ORCHIDACEAE) FROM MT. MURUD, SARAWAK, BORNEO
Vol 21, Page 315