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A new Psychotria (Rubiaceae) from Nicaragua and Honduras [P. jinotegensis]
Vol 50, Iss 1, Page 1
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Studies on Mikania (Compositae) -- VII
Vol 50, Page 3
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Notes on new and noteworthy plants. CLIII
Vol 50, Page 12
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THE VASCULAR PLANTS OF HACKENSACK RIVER AREA NEW-JERSEY USA
Vol 50, Page 15
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NOTES ON THE GENUS GEUNSIA VERBENACEAE
Vol 50, Page 46
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Plantae mesoamericanae novae I
Vol 50, Iss 1, Page 69
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Supplementary notes on the American species of Strychnos---XX
Vol 50, Page 73
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Supplementary notes on American Menispermaceae---XVII. Neotropical Triclisieae and Anomospermeae
Vol 50, Page 80
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Notes on the species of Erythrina. XVII
Vol 50, Page 112
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Oxalidaceae extra-austroamericanae IV: Oxalis L. sectio Articulatae Kunth
Vol 50, Iss 2, Page 130
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Additional notes on the genus Geunsia. I
Vol 50, Iss 2, Page 143
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Studies on the Maryland flora VIII: range extensions of Polygonum perfoliatum L., with notes on introduction and disperal in North America
Vol 50, Iss 2, Page 152
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Novitates Antillanae. IX
Vol 50, Page 161
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Some new combinations in the Icelandic flora
Vol 50, Iss 3, Page 171
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Significant collections of Louisiana plants. VII. Sabine Parish
Vol 50, Iss 3, Page 173
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Austral Hepaticae XVII. Pachyschistochila Schust. et Engel, gen. nov
Vol 50, Iss 3, Page 177
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A new variety of the Bolivian tuber-bearing Solanum capsici-baccatum
Vol 50, Page 181
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Dalbergia darienensis (Leguminosae), a new species from Panamá
Vol 50, Iss 3, Page 183
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New taxa and new combinations in the American Crotalarias (Fabaceae)
Vol 50, Page 185
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Studies on the Maryland flora IX: Cakile maritima Scop. naturalized in the Chesapeake Bay region
Vol 50, Iss 3, Page 207
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Lupinus aridorum J. B. McFarlin ex Beckner (Fabaceae), a new species from central Florida
Vol 50, Page 209
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Additional Notes on the Genus Recordia. III
Vol 50, Page 212
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Notes on new and noteworthy plants---CLIV
Vol 50, Page 214
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Additional notes on the genus Geunsia. II
Vol 50, Iss 3, Page 216
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A sixth summary of the Verbenaceae, Avicenniaceae, Stilbaceae, Chloanthaceae, Symphoremaceae, Nyctanthaceae, and Eriocaulaceae of the world as to valid taxa, geographic distribution and synonymy. Supplement 1
Vol 50, Iss 4, Page 233
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Lysurus cruciatus (Lepr. & Mont.) Lloyd in Illinois
Vol 50, Iss 4, Page 271
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Trillium virginianum (Fern) Reed in Maryland, Virginia, West Virginia and North Carolina
Vol 50, Page 279
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Additional notes on Cypripedium kentuckiense Reed
Vol 50, Iss 4, Page 286
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A new form of Trillium miyabeanum (Liliaceae) from Hokkaido
Vol 50, Iss 4, Page 289
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New yellow-flowered forms of Trillium (Liliaceae) from the northwestern United States
Vol 50, Iss 4, Page 290
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Additional notes on the genus Geunsia. III
Vol 50, Iss 4, Page 292
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Certamen Melastomataceis XXXIV
Vol 50, Iss 5, Page 297
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Notes on new and noteworthy plants---CLV
Vol 50, Page 308
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The algae of New Jersey (U.S.A.) I. Chrysophyta (yellow-green algae) A. Xanthophyceae, Chrysophyceae and Prymnesiophyceae
Vol 50, Iss 5, Page 311
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A study of four species of Cirsium native to Mexico
Vol 50, Page 317
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New state and county records for Hexastylis in Maryland, West Virginia and Kentucky
Vol 50, Iss 5, Page 327
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Halodule beaudettei along Potomac River, new to Maryland
Vol 50, Iss 5, Page 328
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Begonia nomenclature notes, 6
Vol 50, Iss 5, Page 330
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A new species of Balsamorhiza (Asteraceae) from the Siskiyou region of southwestern Oregon and northwestern California
Vol 50, Page 357
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Additional notes on the genus Geunsia. IV
Vol 50, Iss 5, Page 360
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Studies in the Eupatorieae (Asteraceae). CCXII. Additions to Austroeupatorium, Flyriella, and Teixeiranthus
Vol 50, Iss 5, Page 379
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Studies in the Eupatorieae (Asteraceae). CCXIII. A new genus, Prolobus, from Bahia
Vol 50, Iss 5, Page 385
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New Illinois angiosperm distribution records
Vol 50, Iss 6, Page 393
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Plantae Mesoamerican Novae, II
Vol 50, Iss 6, Page 401
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The algae of New Jersey (U.S.A.) II. Euglenophyta (euglenoids)
Vol 50, Iss 6, Page 405
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Notes on the genus Glossocarya (Verbenaceae)
Vol 50, Iss 6, Page 413
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Notes on the genus Hymenopyramis (Verbenaceae)
Vol 50, Iss 6, Page 432
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Plantae Mesoamericanae Novae, III
Vol 50, Iss 7, Page 457
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New combinations required for the Flora of Central Eastern United States
Vol 50, Iss 7, Page 461
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A new species of Oxalis
Vol 50, Page 463
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Notes on new and noteworthy plants---CLVI
Vol 50, Page 468
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Additional materials toward a monograph of the genus Callicarpa. XXIX
Vol 50, Iss 7, Page 470