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The genus Oxytropis in northeastern America
Iss 82, Page 137, Date 1928
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The North American species of Anemone § Anemonanthea
Iss 82, Page 180, Date 1928
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Schmidel's publication of Thelypteris
Iss 83, Page 21, Date 1929
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A study of Thelypteris palustris
Iss 83, Page 27, Date 1929
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Four grasses of eastern America
Iss 83, Page 44, Date 1929
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The representatives of Eleocharis palustris in North America
Iss 83, Page 57, Date 1929
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A note on Poa labradorica
Iss 83, Page 78, Date 1929
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A tentative revision of Alchemilla § Lachemilla
Iss 84, Page 1, Date 1929
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Papers on the flora of northern Chile. 1: The coastal flora of the departments of Chañaral and Taltal; 2: The flora of the Nitrate Coast; 3: Undescribed species from the cordilleras of Atacama
Iss 85, Page 1, Date 1929
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The coastal flora of the departments of Chañaral and Taltal
Iss 85, Page 1, Date 1929
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The flora of the Nitrate Coast
Iss 85, Page 138, Date 1929
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Undescribed species from the cordilleras of Atacama
Iss 85, Page 164, Date 1929
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Some undescribed species from Peru
Iss 85, Page 172, Date 1929
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Monographic studies in the genus Eleocharis
Iss 86, Page 121, Date 1929
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Ligusticum scothicum of the North Atlantic and of the North Pacific
Iss 87, Page 7, Date 1930
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Carex macrocephala and C. anthericoides
Iss 87, Page 9, Date 1930
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A revision of some North American species of Calamagrostis
Iss 87, Page 35, Date 1930
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The complex Bromus ciliatus
Iss 87, Page 63, Date 1930
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Some varieties of the Amphigean species of Osmunda
Iss 87, Page 71, Date 1930
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Potamogeton alpinus and P. microstachys
Iss 87, Page 76, Date 1930
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The identities of Juncus canadensis and of J. brevicaudatus
Iss 87, Page 83, Date 1930
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The Polygoneae of Eastern Asis
Iss 88, Page 1, Date 1930
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Studies in the Bromeliaceae.--I
Iss 89, Page 3, Date 1930
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Records preliminary to a general treatment of the Eupatorieae--VIII
Iss 90, Page 3, Date 1930
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Observations on the genus Stevia
Iss 90, Page 36, Date 1930
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The Stevias of the Argentine Republic
Iss 90, Page 58, Date 1930
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The Stevias of Paraguay
Iss 90, Page 79, Date 1930
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The Stevias of North America
Iss 90, Page 90, Date 1930