1. Systematics of the Opuntia humifusa complex

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4. A revision of the new world species of Lindernia allioni (Scrophulariaceae)

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5. Biosystematics of the Arisaema triphyllum complex

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6. Leaf anatomy and venation patterns of the Styracaceae

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7. A vascular flora of Bennington County, Vermont

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9. Systematics of three species of Ranunculus (Ranunculaceae)

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10. A comparison of variability in Utricularia cornuta Michx. and Utricularia juncea Vahl

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12. A taxonomic study of the section Hypericum in the eastern United States

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14. The Hepaticae and Anthocerotes of California

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