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A multiyariate analysis of the Pinus chiapensis-monticola-strobus phylad
Vol 68, Page 1
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Cytogeography of Orontium aquaticum (Araceae)
Vol 68, Page 25
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AUTHORS OF PLANT GENERA AND THE INTERNATIONAL PLANT INDEX
Vol 68, Page 35
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STUDIES IN THE CAPPARIDACEAE-D VIII POLANISIA-DODECANDRA-D
Vol 68, Page 41
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POLANISIA DODECANDRA IN NEW HAMPSHIRE
Vol 68, Page 48
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Chromosome numbers in Vernonia (Compositae)
Vol 68, Page 49
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Natural hybrids of lady's slippers (Cypripedium) in Manitoba
Vol 68, Page 53
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A study of variation in the cytotypes of Dryopteris spinulosa
Vol 68, Page 59
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Varieties of Ballota nigra in the eastern United States
Vol 68, Page 93
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Paspalum minus (Gramineae) in Louisiana and Mississippi
Vol 68, Page 94
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Studies in the flora of Bolivia - IV
Vol 68, Page 97
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Errata: Volume 67
Vol 68, Page 120
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New data on North American oak ferns, Gymnocarpium
Vol 68, Page 121
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Lactuca muralis [Compositae] in New England
Vol 68, Page 138
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Cuchumatanea -- a new genus of the Compositae (Heliantheae)
Vol 68, Page 139
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SEED GERMINATION OF SHORTIA GALACIFOLIA T. & G. UNDER CONTROLLED CONDITIONS
Vol 68, Page 147
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The application of the Linnaean names of some New World species of Euphorbia subgenus Chamaesyce
Vol 68, Page 155
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IDENTITY OF WITCHWEED IN THE SOUTHEASTERN UNITED STATES
Vol 68, Page 167
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Bromus mollis and allies in New England
Vol 68, Page 168
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Contribution to the fungus flora of northeastern North America. IV
Vol 68, Page 175
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Notes on Rafinesque's species of Lechea (Cistaceae)
Vol 68, Page 192
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Gentiana puberulenta sp. nov., a known but unnamed species of the North American prairies
Vol 68, Page 209
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New chromosome numbers in Zinnia and Sanvitalia [Compositae]
Vol 68, Page 215
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Two new naiads [Naias gracillima, N. minor] from Illinois and distributional records of the Naiadaceae
Vol 68, Page 216
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Aquatic vascular plants new for Illinois [Naias marina, Ruppia maritima (Potamogetonaceae)]
Vol 68, Page 221
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Studies in the flora of Bolivia
Vol 68, Page 223
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Studies in the flora of Bolivia. IV. [Gramineae]
Vol 68, Page 241
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Native North American Species of Lespedeza (Leguminosae)
Vol 68, Page 359
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Environmental control of a taxonomic character separating Heterotheca s. str. from Chrysopsis
Vol 68, Page 406
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CONTRIBUTIONS TO THE FLORA OF NOVA SCOTIA VIII. DISTRIBUTION OF ARCTIC-ALPINE AND BOREAL DISJUNCTS
Vol 68, Page 409
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Some additions and corrections to the flora of Texas. III
Vol 68, Page 420
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Candolleodendron, a new genus of the Leguminosae (Caesalpinioideae)
Vol 68, Page 429
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Observations regarding the occurrence and relationships of Ruellia lorentziana (Acanthaceae) in southern Florida
Vol 68, Page 432
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Nomenclatural notes on monocots
Vol 68, Page 435
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Notes on Lesser Antilles ferns
Vol 68, Page 464
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A NEW SPECIES OF ASTERELLA FROM MEXICO
Vol 68, Page 470
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Rubus subgenus Eubatus in New England. A conspectus
Vol 68, Page 474
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THE IDENTITY OF SISYMBRIUM PAUCIFLORUM (CRUCIFERAE)
Vol 68, Page 513
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Botanical notes from the Pringle Herbarium. I. [Coniferae, Gramineae. ]
Vol 68, Page 514
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A new method [clear plastic] for maintaining the cones of Abies and Cedrus intact for study and storage
Vol 68, Page 516
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Some [angiosperm] plants new to Tennessee
Vol 68, Page 518
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SPERGULA MORISONII IN AMERICA
Vol 68, Page 520
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Revised checklist of the vascular plants of Maine
Vol 68, Page 521