The genus Haplopappus : a phylogenetic study in the Compositae 1928 [Leather Bound]
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The Genus Haplopappus 1928 [Leather Bound]
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SEED PREDATION AND SEEDLING MORTALITY IN THE RECRUITMENT OF A SHRUB, HAPLOPAPPUS VENETUS (ASTERACEAE), ALONG A CLIMATIC GRADIENT
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FACTORS AFFECTING INTERACTION AND DISTRIBUTION OF HAPLOPAPPUS DIVARICATUS AND CONYZA CANADENSIS IN NORTH CAROLINA OLD FIELDS
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Haplopappus
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Competition between burroweed and annual and perennial grasses for soil moisture
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