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Bipinnate Leguminosae of Nicaragua
Vol 48, Page 1, Date 1981
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Contribution to the lichen flora of Brazil VIII. Lichens from Morro do Coco, Viamao, Rio Grande do Sul
Vol 48, Iss 1, Page 72, Date 1981
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TaxonomÃa y distribución de las gramÃneas de México, I. Hydrochloa caroliniensis var. oconneri: (Gramineae). Una nueva variedad de importancia forrajera
Vol 48, Page 77, Date 1981
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Biogeography and origin of Solanum acaule Bitter
Vol 48, Page 85, Date 1981
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Spiranthes emiliae, new species from Sierra de la Madera, Coahuila
Vol 48, Iss 1, Page 96, Date 1981
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Realignments in the Dichanthelium acuminatum complex (Poaceae)
Vol 48, Page 99, Date 1981
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Additional notes on the genus Ghinia. II
Vol 48, Page 111, Date 1981
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Notes on the genus Hoseanthus (Verbenaceae)
Vol 48, Iss 1, Page 116, Date 1981
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Chromsomes of Sachsia (Compositae - Inuleae)
Vol 48, Page 129, Date 1981
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Studies of American Plants--XX
Vol 48, Page 131, Date 1981
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NEOTROPICAL MYRSINACEAE 4
Vol 48, Page 137, Date 1981
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ADDITIONS TO CYANEA LOBELIACEAE OF OAHU AND MAUI HAWAIIAN USA PLANT STUDIES 106
Vol 48, Page 143, Date 1981
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Studies on the Maryland flora VII: addition of Cyperus houghtonii Torr. and Juncus trifidus var. monanthos (Jacq.) Bluff & Fing. to the state flora
Vol 48, Iss 2, Page 146, Date 1981
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Additional notes on the genus Lippia. XVI
Vol 48, Page 151, Date 1981
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A new Peperomia from Nicaragua
Vol 48, Page 186, Date 1981
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Noteworthy grasses from Mexico VIII
Vol 48, Iss 2, Page 189, Date 1981
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Episcothamnus and Bishopalea, two new genera of Vernonieae (Asteraceae) from Brasil, and the resurrection of Sipolisia
Vol 48, Page 209, Date 1981
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Studies in the Eupatorieae (Asteraceae). CCIII. A new genus Bishopiella
Vol 48, Iss 3, Page 218, Date 1981
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STUDIES IN THE EUPATORIEAE ASTERACEAE 104. NEW COMBINATIONS IN BRAZILIAN AND MEXICAN SPECIES
Vol 48, Page 221, Date 1981
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STUDIES IN THE EUPATORIEAE ASTERACEAE 105. 2 NEW SPECIES OF MIKANIA FROM BRAZIL
Vol 48, Page 223, Date 1981
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Two new tuber-bearing Solanum from South America
Vol 48, Page 229, Date 1981
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New species of Myristicaceae, Combretaceae, and Urticaceae from coastal Colombia and Ecuador
Vol 48, Page 233, Date 1981
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Certamen Melastomataceis XXXII
Vol 48, Iss 3, Page 238, Date 1981
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NOTES ON NEW AND NOTEWORTHY PLANTS 145
Vol 48, Page 253, Date 1981
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Additional notes on the genus Lippia. XVII
Vol 48, Page 255, Date 1981
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Additional notes on the genus Citharexylum. XVIII
Vol 48, Page 270, Date 1981
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Isoetes melanopoda in Sabine Parish, Louisiana
Vol 48, Iss 3, Page 274, Date 1981
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Additional collections of Botrychium lunarioides from Texas and Oklahoma and comments on its dormancy
Vol 48, Iss 3, Page 276, Date 1981
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Nomenclatural transfers and taxonomic notes on some South American Gentianaceae
Vol 48, Page 281, Date 1981
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A yellow-flowered form of Erythrina poeppigiana
Vol 48, Iss 4, Page 286, Date 1981
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Prodromus Bryologiae Andinae I. The Polytrichum juniperinum group in Bolivia --revival of Polytrichum aristiflorum
Vol 48, Iss 4, Page 287, Date 1981
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NOTES ON NEW AND NOTEWORTHY PLANTS 196
Vol 48, Page 290, Date 1981
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Additional notes on the genus Citharexylum. XIX
Vol 48, Page 292, Date 1981
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Notes on the genus Holmskioldia
Vol 48, Page 313, Date 1981
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Mimosa sousae, a new species of Sensitivae (Leguminosae) from Oaxaca, Mexico
Vol 48, Page 369, Date 1981
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Langermannia bicolor (Lev.) Demoulin & Dring
Vol 48, Iss 5, Page 373, Date 1981
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Additional notes on the genus Holmskioldia (Verbenaceae)
Vol 48, Page 384, Date 1981
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Notes on the genus Archboldia (Verbenaceae)
Vol 48, Iss 5, Page 386, Date 1981
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Notes on the genus Huxleya (Verbenaceae)
Vol 48, Iss 5, Page 388, Date 1981
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Notes on the genus Xolocotzia (Verbenaceae)
Vol 48, Page 390, Date 1981
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Notes on the genus Adelosa (Verbenaceae)
Vol 48, Page 392, Date 1981
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Notes on the genus Acharitea (Chloanthaceae)
Vol 48, Page 394, Date 1981
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Notes on the genus Tetraclea (Verbenaceae)
Vol 48, Page 397, Date 1981
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Additional notes on the genus Vitex. XVIII
Vol 48, Iss 5, Page 413, Date 1981
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Notas sobre Rubiaceae
Vol 48, Iss 5, Page 420, Date 1981
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Dicerandra radfordiana, a new Labiate from Georgia
Vol 48, Page 433, Date 1981
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NOTES ON AMERICAN GESNERIACEAE 8
Vol 48, Page 437, Date 1981
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NOTES ON NEW AND NOTEWORTHY PLANTS 147
Vol 48, Page 438, Date 1981
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NOTES ON THE GENUS TEUCRIDIUM VERBENACEAE
Vol 48, Page 439, Date 1981
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Notes on the genus UrbanÃa (Verbenaceae)
Vol 48, Iss 6, Page 445, Date 1981
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Notes on the genus Ubochea (Verbenaceae)
Vol 48, Iss 6, Page 450, Date 1981
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Additional notes on the genus Vitex. XIX
Vol 48, Page 452, Date 1981