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Undescribed Plants from Guatemala and Other Central American Republics. XVII
Vol 23, Iss 1, Page 1
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Myelopteris Topekensis, N. Sp. A New Carboniferous Plant
Vol 23, Iss 1, Page 15
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A New Quillwort
Vol 23, Iss 1, Page 32
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Notes on the Fertilization and Embryogeny of Conifers
Vol 23, Iss 1, Page 40
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Myriostoma Coliforme
Vol 23, Iss 1, Page 43
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The Common Ustilago of Maize
Vol 23, Iss 1, Page 44
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Editorials
Vol 23, Iss 1, Page 47
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The Tropical Laboratory
Vol 23, Iss 1, Page 50
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The Acaulescent Violets
Vol 23, Iss 1, Page 53
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The Tropical Laboratory Commission
Vol 23, Iss 1, Page 54
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Notes for Students
Vol 23, Iss 1, Page 57
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Minor Notices
Vol 23, Iss 1, Page 68
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News
Vol 23, Iss 1, Page 71
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Opportunities for Research in Botany Offered by American Institutions
Vol 23, Iss 2, Page 73
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Some New Species of Minnesota Algæ which Live in a Calcareous or Siliceous Matrix
Vol 23, Iss 2, Page 95
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Notes on Uroglena Americana Calk
Vol 23, Iss 2, Page 105
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Hypoxis erecta Linn. A Bibliographical Study
Vol 23, Iss 2, Page 113
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Zizia aurea and Thaspium aureum
Vol 23, Iss 2, Page 121
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A New Isoetes from Idaho
Vol 23, Iss 2, Page 124
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Editorials
Vol 23, Iss 2, Page 126
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Mounting Plants for Use in Popular Lectures
Vol 23, Iss 2, Page 128
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The Tropical Laboratory Commission
Vol 23, Iss 2, Page 129
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Minor Notices
Vol 23, Iss 2, Page 132
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Notes for Students
Vol 23, Iss 2, Page 135
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News
Vol 23, Iss 2, Page 144
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Contribution to the Life History of Salix
Vol 23, Iss 3, Page 147
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Contributions from the Cryptogamic Laboratory of Harvard University. XXXVIII. Notes on the Genus Calostoma
Vol 23, Iss 3, Page 180
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Definiteness of Variation, and Its Significance in Taxonomy
Vol 23, Iss 3, Page 193
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Editorials
Vol 23, Iss 3, Page 200
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The Metric System and the "Illustrated Flora"
Vol 23, Iss 3, Page 204
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Oversight of American Publications
Vol 23, Iss 3, Page 205
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Bibliography of Hypoxis
Vol 23, Iss 3, Page 206
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The Tropical Laboratory Commission
Vol 23, Iss 3, Page 207
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Grasses of North America. W. J. Beal
Vol 23, Iss 3, Page 212
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Minor Notices
Vol 23, Iss 3, Page 218
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Notes for Students
Vol 23, Iss 3, Page 221
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News
Vol 23, Iss 3, Page 226
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Undescribed Plants from Guatemala and Other Central American Republics. XVIII
Vol 23, Iss 4, Page 235
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Contribution to the Life History of Sagitaria variabilis
Vol 23, Iss 4, Page 252
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Preliminary Revision of the North American Species of Chrysosplenium
Vol 23, Iss 4, Page 274
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Facilities for Botanical Research at the Naples Zoological Station
Vol 23, Iss 4, Page 278
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Botrychium ternatum Swartz, Var. Lunarioides (Michx.) Milde
Vol 23, Iss 4, Page 282
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Seed Crests and Myrmecophilous Dissemination in Certain Plants
Vol 23, Iss 4, Page 288
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Editorials
Vol 23, Iss 4, Page 290
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The Tropical Laboratory Commission
Vol 23, Iss 4, Page 291
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The Sensibility of Plants
Vol 23, Iss 4, Page 294
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Minor Notices
Vol 23, Iss 4, Page 296
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Notes for Students
Vol 23, Iss 4, Page 297
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News
Vol 23, Iss 4, Page 306
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The Curvature of Roots
Vol 23, Iss 5, Page 307
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Acrospermum urceolatum, a New Discomycetous Parasite of Selaginella rupestris
Vol 23, Iss 5, Page 367
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The Preparation of Material for General Class Use
Vol 23, Iss 5, Page 372
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Editorials
Vol 23, Iss 5, Page 377
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An Introduction to HorticulturePrinciples of Plant Culture: An Elementary Treatise Designed as a Text-Book for Beginners in Agriculture and Horticulture. E. S. Goff
Vol 23, Iss 5, Page 382
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Notes for Students
Vol 23, Iss 5, Page 387
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News
Vol 23, Iss 5, Page 392
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Contribution to the Life History of Lilium philadelphicum
Vol 23, Iss 6, Page 412
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The Embryo Sac and Associated Structures
Vol 23, Iss 6, Page 413
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The Pollen Grain
Vol 23, Iss 6, Page 423
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The Division of the Macrospore Nucleus
Vol 23, Iss 6, Page 430
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Peculiar Structures Occurring in the Pollen Tube of Zamia
Vol 23, Iss 6, Page 453
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Curious Leaves
Vol 23, Iss 6, Page 460
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Species of Botrychium
Vol 23, Iss 6, Page 464
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Color in Plants
Vol 23, Iss 6, Page 466
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Notes for Students
Vol 23, Iss 6, Page 475
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News
Vol 23, Iss 6, Page 482