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The systematics and breeding system of Gelsemium (Loganiceae)
Volume 51, Page 1
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The genera of Ulmaceae in the southeastern United States
Volume 51, Page 18
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THE ECOLOGY OF AN ELFIN FOREST IN PUERTO RICO, 10. NOTES ON TWO SPECIES OF MARCGRAVIA
Volume 51, Page 41
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THE ECOLOGY OF AN ELFIN FOREST IN PUERTO RICO, 11. THE LEAFY HEPATICAE OF PICO DEL OESTE
Volume 51, Page 56
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TYPES OF BLIND VEIN-ENDINGS IN THE DICHOTOMOUS VENATION OF CIRCAEASTER
Volume 51, Page 70
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THE MORPHOLOGY AND GERMINATION OF THE SEED OF ELEPHANTORRHIZA ELEPHANTINA
Volume 51, Page 114
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A new species of Ormosia from Brazil
Volume 51, Page 129
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A REVISION OF THE BORAGINACEAE OF WEST PAKISTAN AND KASHMIR
Volume 51, Page 133
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The genera of the Cannabaceae in the southeastern United States
Volume 51, Page 185
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Notes relating to the floras of Norfolk and Lord Howe Islands, I
Volume 51, Page 204
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THE ECOLOGY OF AN ELFIN FOREST IN PUERTO RICO, 12. A NEW SPECIES OF GONOCALYX (ERICACEAE)
Volume 51, Page 221
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ANALYSIS OF THE COMPLEX VASCULARITY IN STEMS OF DIOSCOREA COMPOSITA
Volume 51, Page 228
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The taxonom,ic status of Protocyrtandra (Gesneriaceae)
Volume 51, Page 241
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HAPLOID AND DIPLOID POLLEN IN HYPERICUM PATULUM
Volume 51, Page 247
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Studies in the Leguminosae 11. A New Species of Derris from the Solomon Islands
Volume 51, Page 251
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The genera of Acanthaceae in the southeastern United States
Volume 51, Page 257
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Floral morphology and vascular anatomy of the Hamamelidaceae: The apetalous genera of Hamamelidoideae
Volume 51, Page 310
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A REVISION OF THE BORAGINACEAE OF WEST PAKISTAN AND KASHMIR
Volume 51, Page 367
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Notes on the genus Galipea (Rutaceae) in Central America
Volume 51, Page 427
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The genera of Molluginaceae and Aizoaceae in the southeastern United States
Volume 51, Page 431
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Relationships in the Piriqueta caroliniana--P. cistoides complex (Turneraceae)
Volume 51, Page 492
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The genera of Chrysobalanaceae in the southeastern United States
Volume 51, Page 521
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A new species of Parietaria (Urticaceae) fron Northeastern Mexico
Volume 51, Page 529
