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RUMEX THYRSIFLORUS NEW TO NORTH AMERICA
Vol 59, Page 1, Date 1957
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NOTES ON FLOWERING PLANTS IN MINNESOTA
Vol 59, Page 6, Date 1957
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A conspectus of the genus Oenothera in eastern North America
Vol 59, Page 9, Date 1957
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ADVENTIVE PLANTS IN NEW YORK
Vol 59, Page 17, Date 1957
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NOTES ON ILEX
Vol 59, Page 20, Date 1957
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BRYOPHYTES OF THE MOUNT GREYLOCK REGION V
Vol 59, Page 25, Date 1957
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ADVENTITIOUS AND ESCAPED PLANTS NEW TO MISSOURI
Vol 59, Page 27, Date 1957
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PLANTS NEW TO ILLINOIS AND INDIANA AND THE CHICAGO REGION
Vol 59, Page 31, Date 1957
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CAREX MOLESTA IN MASSACHUSETTS
Vol 59, Page 33, Date 1957
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A NEW SPECIES OF TERNSTROEMIA FROM JAMAICA, B. W. I
Vol 59, Page 36, Date 1957
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DISTRIBUTIONAL AND NOMENCLATORIAL NOTES ON GALIUM (RUBIACEAE)
Vol 59, Page 38, Date 1957
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The Misuse of the Term Taxon
Vol 59, Page 43, Date 1957
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STUDIES IN THE HIPPOCASTANACEAE, III A HYBRID SWARM IN THE BUCKEYES
Vol 59, Page 45, Date 1957
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NOTES ON THE CLEISTOGAMOUS SPECIES OF POLYGALA IN SOUTHEASTERN UNITED STATES
Vol 59, Page 51, Date 1957
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REVIEW OF THE GENUS CLADONIA IN THE DISTRICT OF COLUMBIA AND VICINITY
Vol 59, Page 56, Date 1957
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A REVISION OF THE GENUS ASCYRUM (HYPERICACEAE)
Vol 59, Page 73, Date 1957
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Hedyotis minima f. albiflora
Vol 59, Page 95, Date 1957
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A NEW RADIATE HYMENOPAPPUS FROM MEXICO
Vol 59, Page 96, Date 1957
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A New Variety of Stipulicida setacea
Vol 59, Page 98, Date 1957
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Hymenocallis littoralis from Florida
Vol 59, Page 99, Date 1957
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Fraser's Catalogue Again
Vol 59, Page 100, Date 1957
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NOTES ON ILLINOIS GRASSES
Vol 59, Page 123, Date 1957
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CONTRIBUTIONS TO THE FLORA OF SOUTHERN ILLINOIS
Vol 59, Page 125, Date 1957
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A REVISION OF THE VERNAL SPECIES OF HELENIUM (COMPOSITAE) (Continued)
Vol 59, Page 128, Date 1957
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Sisyrinchium Bermudiana L. instead of S. angustifolium Miller
Vol 59, Page 159, Date 1957
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Cycloloma in Maryland
Vol 59, Page 160, Date 1957
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IVAR TIDESTROM, 1864—1956
Vol 59, Page 161, Date 1957
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A REVISION OF THE VERNAL SPECIES OF HELENIUM (COMPOSITAE) (continued)
Vol 59, Page 168, Date 1957
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Dentaria in Indiana and Ohio
Vol 59, Page 179, Date 1957
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New Plant Records: Illinois and Indiana
Vol 59, Page 181, Date 1957
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Studies in the Hippocastanaceae, IV. Hybridization in Aesculus
Vol 59, Page 185, Date 1957
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A REVISION OF THE VERNAL SPECIES OF HELENIUM (COMPOSITAE) (continued)
Vol 59, Page 203, Date 1957
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PINGUICULA (LENTIBULARIACEAE) IN THE SOUTHEASTERN UNITED STATES
Vol 59, Page 217, Date 1957
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NOTES ON THE GRASS FLORA OF THE CHICAGO REGION
Vol 59, Page 230, Date 1957
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A Modest Plea in Favor of Divers Taxons
Vol 59, Page 235, Date 1957
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Draba lanceolata in the Ottawa District
Vol 59, Page 237, Date 1957
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New Plant Station Records in Missouri
Vol 59, Page 240, Date 1957
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Chromosome Numbers in the Higher Plants
Vol 59, Page 241, Date 1957
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NOTES ON ORCHIDS FROM LA BAYAMESA, CUBA
Vol 59, Page 245, Date 1957
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NOTEWORTHY HEPATICAE FROM VIRGINIA
Vol 59, Page 251, Date 1957
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MONOTROPSIS LEHMANIAE NOT A REAL SPECIES
Vol 59, Page 259, Date 1957
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Echinochloa Walteri in Concord, Massachusetts
Vol 59, Page 262, Date 1957
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Polygonum bicorne Raf. Instead of P. longistylum Small
Vol 59, Page 265, Date 1957
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Dentaria laciniata from Seed
Vol 59, Page 267, Date 1957
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A New Botanical Masterpiece from Denmark
Vol 59, Page 269, Date 1957
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A Needed Revision
Vol 59, Page 272, Date 1957
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A new intergeneric natural hybrid involving Oryzopsis and Stipa (Gramineae)
Vol 59, Page 273, Date 1957
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A new cruciferous weed, Calepina irregularis, in Virginia
Vol 59, Page 278, Date 1957
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ORCHIDACEAE NEOTROPICALES III. DE ORCHIDACEIS INSULARUM TRINIDAD ET TOBAGO NOTULAE ADDITICIAE
Vol 59, Page 280, Date 1957
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Plants New to Illinois and to the Chicago Region
Vol 59, Page 289, Date 1957
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A NEW FLORA OF GREENLAND
Vol 59, Page 290, Date 1957
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SYNOPSIS OF RUDBECKIA SUBGENUS RUDBECKIA
Vol 59, Page 293, Date 1957
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PARAFORMALDEHYDE AS A SOURCE OF FORMALDEHYDE FOR USE IN BOTANICAL COLLECTING
Vol 59, Page 299, Date 1957
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NOTES ON SOME JAMAICAN EUGENIAS
Vol 59, Page 303, Date 1957
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Note on the Habitat of Aster ptarmicoides
Vol 59, Page 308, Date 1957