Front Matter
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Primary Xylem Elements and Element Associations of Angiosperms
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The Relationship of Gelatinous Fibers to Wood Structure in Eastern Cottonwood (Populus deltoides)
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Morphology of Marsilea vestita. III. Morphogenesis of the Leaves of Etiolated Plants
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Anatomy of Seedling Roots of Pseudotsuga menziesii
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Growth of Excised Pine Embryos and the Role of the Cotyledons during Germination In vitro
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A New Species of Syncephalis (Mucorales)
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Variations within Single Cell Clones of Tobacco Tissue Cultures
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Carbonyl Compounds Produced by Ceratocystis fagacearum
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The Effect of the Interaction of Temperature with After-Ripening Requirement and Compensating Temperature on Germination of Seed of Five Species of Rosa
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The Chromosome Races of Zinnia juniperifolia
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Erratum: Phytochrome Changes in Tissues of Dark-Grown Seedlings Representing Various Photoperiodic Classes
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Back Matter
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