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Notes on American Rorippa (Cruciferae)
Vol 63, Page 1, Date 1961
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A re-evaluation of the generic status of Ascyrum and Crookea (Guttiferae)
Vol 63, Page 10, Date 1961
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Chromosome numbers of some Brazilian Leguminosae
Vol 63, Page 16, Date 1961
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A decade of botanizing in Illinois
Vol 63, Page 19, Date 1961
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New combinations in grasses
Vol 63, Page 24, Date 1961
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Rhododendron maximum in Hopkinton and Harrisville, New Hampshire
Vol 63, Page 26, Date 1961
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Campanular persistence
Vol 63, Page 29, Date 1961
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Notes on Lesser Antilles ferns
Vol 63, Page 31, Date 1961
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A new name for he puberulent sessile-leaved Uvularia
Vol 63, Page 36, Date 1961
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New records for North Dakota
Vol 63, Page 39, Date 1961
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A fern new to Rhode Island
Vol 63, Page 46, Date 1961
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Fourteenth report of the committee on plant distribution
Vol 63, Page 47, Date 1961
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A New Manual for Ohio Vascular Plants
Vol 63, Page 55, Date 1961
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An Indispensable Manual of Tropical Marine Botany
Vol 63, Page 57, Date 1961
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An ecological interpretation of Rhododendron colonies in Maine and New Hampshire
Vol 63, Page 61, Date 1961
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Taxonomic fern notes
Vol 63, Page 70, Date 1961
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A variegated foliage form of Commelina
Vol 63, Page 88, Date 1961
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Some new aspects of the fern Platyzoma microphyllum
Vol 63, Page 91, Date 1961
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The genus Lechea (Cistaceae) in the Southeastern United States
Vol 63, Page 103, Date 1961
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Mentzelia albescens and Lonicera xylosteum in Missouri
Vol 63, Page 118, Date 1961
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A new variety of Rudbeckia fulgida
Vol 63, Page 119, Date 1961
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Chromosome numbers in the Compositae. V. Mexican and Guatemalan Species
Vol 63, Page 121, Date 1961
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Notes on the grass flora of the Chicago region. II
Vol 63, Page 130, Date 1961
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Some notes on Myriophyllum spicatum
Vol 63, Page 139, Date 1961
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Bidens connata var. gracilipes Fern. in western Michigan
Vol 63, Page 145, Date 1961
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New plant records from Kansas
Vol 63, Page 146, Date 1961
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Eragrostis curvula from Illinois
Vol 63, Page 148, Date 1961
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Notes on the flora of Penikese Island, Massachusetts
Vol 63, Page 149, Date 1961
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SYNOPSIS OF THE GENUS XANTHOCEPHALUM (COMPOSITAE)
Vol 63, Page 151, Date 1961
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Roots and the taxonomic differences between Botrychium oneidense and B. dissectum
Vol 63, Page 164, Date 1961
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Two New Orchid Records for Ontario
Vol 63, Page 175, Date 1961
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A Range Extension for Parapholis incurva
Vol 63, Page 176, Date 1961
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A New Species of Haplopappus From Mexico
Vol 63, Page 177, Date 1961
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Contemporary Notes on Powell's Expeditions in the West
Vol 63, Page 179, Date 1961
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Spore studies in the genus Cystopteris I. The distribution of Cystopteris with non-spiny spores in North America
Vol 63, Page 181, Date 1961
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The genus Pteris of Costa Rica
Vol 63, Page 194, Date 1961
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A Second Station for Stewartia ovata on the Coastal Plain
Vol 63, Page 206, Date 1961
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VARIANCE IN HERBARIUM SPECIMEN IDENTIFICATION AND OTHER CONSIDERATIONS BASED UPON THE PREPARATION OF A LOCAL FLORA
Vol 63, Page 207, Date 1961
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A NEW ZEPHYRANTHES FROM SOUTHERN TEXAS
Vol 63, Page 214, Date 1961
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MERGER OF THE NORTH AMERICAN HOUSTONIA AND OLDENLANDIA UNDER HEDYOTIS
Vol 63, Page 216, Date 1961
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DRABA APRICA IN OKLAHOMA
Vol 63, Page 223, Date 1961
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GISEKIA PHARNACIOIDES, A NEW WEED
Vol 63, Page 226, Date 1961
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HETEROSTYLY AND HOMOSTYLY IN LITHOSPERMUM CANESCENS (BORAGINACEAE)
Vol 63, Page 229, Date 1961
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A new species of Panicum from New Jersey
Vol 63, Page 235, Date 1961
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EVIDENCE FOR THE HYBRID ORIGIN OF SCIRPUS PECKII
Vol 63, Page 237, Date 1961
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Environmental variation in Heterotheca sub-axillaris f Compositael
Vol 63, Page 243, Date 1961
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Observations on the Sagittaria subulata complex
Vol 63, Page 247, Date 1961
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The chromosomes of Podophyllum peltatum [Berberidaceae]
Vol 63, Page 267, Date 1961
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A list of algae from selected areas in Massachusetts
Vol 63, Page 275, Date 1961
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L Further notes on Chamaecyparis thyoides in New Hampshire
Vol 63, Page 281, Date 1961
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Which side is up? A look at the leaves of Oryzopsis [Gramineael
Vol 63, Page 285, Date 1961
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A check list of Walter Deane's seedling collection
Vol 63, Page 287, Date 1961
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The bulbiferous Ranunculus ficaria
Vol 63, Page 289, Date 1961
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A Useful Multilingual Botanical Dictionary
Vol 63, Page 291, Date 1961
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A Notable Assemblage of Plants in New Hampshire
Vol 63, Page 294, Date 1961
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The specific epithet of the pecan
Vol 63, Page 296, Date 1961
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Introgression of Alnus serrulata and Alnus rugosa [Betulaceae]
Vol 63, Page 297, Date 1961
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Some new or otherwise interesting reports of Liliaceae from the southeast states
Vol 63, Page 304, Date 1961
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Hybrid aspens in the Lower Peninsula of Michigan
Vol 63, Page 311, Date 1961
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A disjunct community of chestnut oak in Mississippi
Vol 63, Page 324, Date 1961
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Viola rafinesquii: Nomenclature and native status
Vol 63, Page 327, Date 1961
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The genus Oleandra of Costa Rica
Vol 63, Page 335, Date 1961
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Vascular plants on the cinder cone of Paricutin Volcano in 1960
Vol 63, Page 340, Date 1961
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A weedy crucifer again reaches North America
Vol 63, Page 345, Date 1961
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An albino fruited form of Gaultheria procumbens f Ericaceae]
Vol 63, Page 346, Date 1961
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Corrections in Reports of the Committee on Plant Distribution
Vol 63, Page 348, Date 1961
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A Botanical Atlas of the Danish Flora
Vol 63, Page 349, Date 1961