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Cretaceous angiosperm pollen of the Atlantic coastal plain and its evolutionary significance
Volume 50, Page 1
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Comparative anatomy and relationships of Columelliaceae
Volume 50, Page 36
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Notes on the distribution and habitat of Columellia
Volume 50, Page 76
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THE ECOLOGY OF AN ELFIN FOREST IN PUERTO RICO, 3. HILLTOP AND FOREST INFLUENCES ON THE MICROCLIMATE OF PICO DEL OESTE
Volume 50, Page 80
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THE ECOLOGY OF AN ELFIN FOREST IN PUERTO RICO, 4. TRANSPIRATION RATES AND TEMPERATURES OF LEAVES IN COOL HUMID ENVIRONMENT
Volume 50, Page 93
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THE ECOLOGY OF AN ELFIN FOREST IN PUERTO RICO, 5. CHROMOSOME NUMBERS OF SOME FLOWERING PLANTS
Volume 50, Page 99
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The genera of Senecioneae in the southeastern United States
Volume 50, Page 104
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ASPECTS OF THE COMPLEX NODAL ANATOMY OF THE DIOSCOREACEAE
Volume 50, Page 124
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ANATOMY OF THE PALM RHAPIS EXCELSA, VII. FLOWERS
Volume 50, Page 138
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GLYCOSMIS PENTAPHYLLA (RUTACEAE) AND RELATED INDIAN TAXA
Volume 50, Page 153
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VASCULAR ANATOMY OF MONOCOTYLEDONS WITH SECONDARY GROWTH — AN INTRODUCTION
Volume 50, Page 159
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Aspects of reproduction in Saurauia
Volume 50, Page 180
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THE ECOLOGY OF AN ELFIN FOREST IN PUERTO RICO, 8. STUDIES OF STEM GROWTH AND FORM AND OF LEAF STRUCTURE
Volume 50, Page 225
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A REVISION OF THE MALESIAN AND PACIFIC RAINFOREST CONIFERS, I. PODOCARPACEAE, IN PART
Volume 50, Page 274
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A revision of the Malesian and Pacific rainforest conifers, I. Podocarpaceae, in part
Volume 50, Page 315
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THE VASCULAR SYSTEM IN THE AXIS OF DRACAENA FRAGRANS (AGAVACEAE), 1. DISTRIBUTION AND DEVELOPMENT OF PRIMARY STRANDS
Volume 50, Page 370
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COMPARATIVE MORPHOLOGICAL STUDIES IN DILLENIACEAE, IV. ANATOMY OF THE NODE AND VASCULARIZATION OF THE LEAF
Volume 50, Page 384
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ANATOMY AND ONTOGENY OF THE CINCINNI AND FLOWERS IN NANNORRHOPS RITCHIANA (PALMAE)
Volume 50, Page 411
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ASPECTS OF MORPHOLOGY OF AMENTOTAXUS FORMOSANA WITH A NOTE ON THE TAXONOMIC POSITION OF THE GENUS
Volume 50, Page 432
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A KARYOLOGICAL SURVEY OF LONICERA, II
Volume 50, Page 449
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NOTES ON WEST INDIAN ORCHIDS, I
Volume 50, Page 462
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POLLEN CHARACTERISTICS OF AFRICAN SPECIES OF VERNONIA
Volume 50, Page 469
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A NEW SPECIES OF FICUS FROM SURINAME
Volume 50, Page 478
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A REVISION OF THE GENUS FLINDERSIA (RUTACEAE)
Volume 50, Page 481
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A STUDY OF THE GENUS JOINVILLEA (FLAGELLARIACEAE)
Volume 50, Page 527
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Studies in the North American genus Fothergilla (Hamamelidaceae)
Volume 50, Page 599
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The tribe Mutisieae (Compositae) in the southeastern United States
Volume 50, Page 620
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A NEW SPECIES OF ARENARIA FROM THE BHUTAN HIMALAYA
Volume 50, Page 626
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THE DIRECTOR'S REPORT: The Arnold Arboretum During the Fiscal Year Ended June 30, 1969
Volume 50, Page 629
