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NEW AND RECONSIDERED MEXICAN UMBELLIFERAE
Vol 11, Page 1
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Marasmius section Chordales in the northeastern United States and adjacent Canada
Vol 11, Iss 2, Page 25
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THE TAXONOMY OF ACMANTHERA (MALPIGHIACEAE)
Vol 11, Page 41
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NOTES ON BANISTERIOPSIS FROM SOUTH-CENTRAL BRAZIL
Vol 11, Page 51
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MEXICAN SPECIES OF PEDICULARIS (SCROPHULARIACEAE) HITHERTO CONFUSED WITH P. TRIPINNATA MART. & GAL
Vol 11, Page 57
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REDISCOVERY OF LOBELIA DIELSIANA WIMMER, AND A RELATED SPECIES NEW TO SCIENCE
Vol 11, Page 65
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Comments on Sphagnum capillaceum
Vol 11, Page 89
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TAXONOMIC TREATMENT OF THE LUZULAE GROUP OF CYPERUS
Vol 11, Page 197
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TWO NEW SPECIES OF BUNCHOSIA FROM WESTERN MEXICO
Vol 11, Page 273
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KOSTELETZKYA TUBIFLORA (MALVACEAE): A NEW NAME BASED ON A SESSE & MOCINO PAINTING
Vol 11, Page 277
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Sphagnum richardsianum, a new species from Mexico
Vol 11, Page 281
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Calceolaria mexicana and C. tripartita in Mexico
Vol 11, Page 284
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A new Asclepias from Zacatecas, Mexico
Vol 11, Page 289
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A NEW SPECIES OF PEDICULARIS FROM JALISCO, MEXICO
Vol 11, Page 298
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A new species of Arbutus (Ericaceae) from western Mexico
Vol 11, Page 301
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THREE NEW SPECIES OF TRIUMFETTA FROM WESTERN MEXICO
Vol 11, Page 305