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STATICE IN NORTH AMERICA
Vol 19, Page 1
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THE GENUS ELATINE IN EASTERN NORTH AMERICA
Vol 19, Page 10
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A NEW AGROPYRON FROM CAPE BRETON
Vol 19, Page 15
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A NEW JUNCUS FROM CAPE COD
Vol 19, Page 17
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A Form of Solidago sempervirens with White Rays
Vol 19, Page 20
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BOTANICAL ACTIVITIES OF PERCIVAL LOWELL
Vol 19, Page 21
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THE GENUS ERECHTITES IN TEMPERATE NORTH AMERICA
Vol 19, Page 24
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A Variety of Spartina new to New England
Vol 19, Page 27
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NOTES ON RARE NEW YORK STATE PLANTS
Vol 19, Page 28
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A glandular Form of Hieracium paniculatum L
Vol 19, Page 37
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Utricularia fibrosa in Massachusetts
Vol 19, Page 38
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Salvia sylvestris L. in County Peel, Ontario
Vol 19, Page 39
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ABNORMAL FLOWER STRUCTURE IN OXALIS STRICTA L
Vol 19, Page 41
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THE SPECIFIC CHARACTERS OF HEPATICA AMERICANA
Vol 19, Page 45
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POLYMNIA UVEDALIA AND ITS VARIETIES
Vol 19, Page 46
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NOTES ON RARE NEW YORK STATE PLANTS. (Continued)
Vol 19, Page 48
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ORCHIDS FOUND IN THE REGION OF ASQUAM LAKE
Vol 19, Page 56
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HELIANTHEMUM DUMOSUM ON THE MAINLAND OF NEW ENGLAND
Vol 19, Page 58
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Glandularity on Veronica Anagallis-aquatica L
Vol 19, Page 60
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REV. E. J. HILL
Vol 19, Page 61
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THE VARIATIONS OF POLYGONUM PENSYLVANICUM
Vol 19, Page 70
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SIEGESBECKIA ORIENTALIS IN ILLINOIS
Vol 19, Page 74
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THE STATUS OF GLYCERIA FERNALDII
Vol 19, Page 75
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TWO NEW MARITIME PLANTS OF NORTHEASTERN NORTH AMERICA
Vol 19, Page 76
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THE SARGASSO SEA
Vol 19, Page 77
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THE IDENTITY OF CIRCAEA CANADENSIS AND C. INTERMEDIA
Vol 19, Page 85
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IS ASTER TARDIFLORUS A HYBRID?
Vol 19, Page 88
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A NEW CARDAMINE FROM SOUTHERN MAINE
Vol 19, Page 91
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Note on Nuphar
Vol 19, Page 92
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A NEW SPECIES OF ERAGROSTIS OF THE OLD WORLD AND NORTH AMERICA
Vol 19, Page 93
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RANGE OF CAREX NOVAE—ANGLIAE EXTENDED INTO PENNSYLVANIA
Vol 19, Page 96
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ANDROPOGON SCOPARIUS IN THE UNITED STATES AND CANADA
Vol 19, Page 100
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ADDITIONS TO THE FLORA OF CONNECTICUT
Vol 19, Page 105
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Carex gynocrates in Pennsylvania
Vol 19, Page 110
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A Diagnostic Character of Nuphar microphyllum
Vol 19, Page 111
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A NEW RUDBECKIA FROM INDIANA
Vol 19, Page 113
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COLOR FORMS OF IMPATIENS BIFLORA
Vol 19, Page 115
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ADDITIONS TO THE FLORA OF CONNECTICUT. (Continued)
Vol 19, Page 119
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FURTHER NOTES ON THE ORCHIDS OF THE REGION OF ASQUAM LAKE
Vol 19, Page 131
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Some further Plants found on Woolwaste at Westford, Massachusetts
Vol 19, Page 132
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CONTRIBUTIONS FROM THE GRAY HERBARIUM OF HARVARD UNIVERSITY.— NEW SERIES, NO. L
Vol 19, Page 133
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New or critical species or varieties of Ranunculus
Vol 19, Page 135
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STUDIES IN CERTAIN NORTH AMERICAN SPECIES OF LATHYRUS
Vol 19, Page 156
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A PRAIRIE NEAR ANN ARBOR, MICHIGAN
Vol 19, Page 163
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REMARKS ON SEVERAL NORTH AMERICAN SPECIES OF ALOPECURUS
Vol 19, Page 165
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Vernonia altissima Nutt. var. taeniotricha, var. nov
Vol 19, Page 167
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Taxonomic and geographic studies in North American ferns
Vol 19, Page 169
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The genus Athyrium and the North American ferns allied to Athyrium filix-femina
Vol 19, Page 170
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PRELIMINARY LISTS OF NEW ENGLAND PLANTS,—XXV
Vol 19, Page 217
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The Tardy Flowering of Plants in Eastern Massachusetts in the Spring of 1917
Vol 19, Page 219