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New Parmeliae (lichens) from Africa. 2
Vol 27, Iss 1, Page 1, Date 1973
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Catalogus Euphorbiarum 1973. Vol. III. Sect. XXVI. Tithymalus. 384-692
Vol 27, Iss 1, Page 8, Date 1973
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Miscellaneous notes on neotropical flora, IV
Vol 27, Page 41, Date 1973
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A new species of Fernonia [V. barelayi] from Mexico
Vol 27, Iss 1, Page 52, Date 1973
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Studies in the Senecioneae (Asteraceae). II. A new genus, Nelsonianthus
Vol 27, Page 53, Date 1973
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Notes on Caribbean Discomycetes. IV. Cookeina venezuelae, C. colensoi and the genus Boedijnopeziza
Vol 27, Iss 1, Page 55, Date 1973
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Notes on new and noteworthy plants. LXIII
Vol 27, Iss 1, Page 63, Date 1973
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Additional notes on the genus Aegiphila. XX
Vol 27, Page 73, Date 1973
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Supplementary notes on the American species of Strychnos. XIII
Vol 27, Page 97, Date 1973
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Notes on the species of Erythrina. VII
Vol 27, Page 108, Date 1973
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Santalum paniculatum var. chartaceum Deg. & Deg
Vol 27, Iss 3, Page 145, Date 1973
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Additional notes on the genus Aegiphila. XXI
Vol 27, Page 148, Date 1973
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Miscellaneous notes on neotropical flora, V
Vol 27, Page 169, Date 1973
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Begonia of Venezuela
Vol 27, Iss 4, Page 209, Date 1973
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Re-establishment of Acourtia D. Don (Asteraceae)
Vol 27, Page 228, Date 1973
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Studies in the Eupatorieae (Asteraceae). CXIV. The genera of Barro Colorado Island, Panama
Vol 27, Page 233, Date 1973
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Studies in the Eupatorieae (Asteraceae). CXV. A new genus and species, Pseudokyrsteniopsis perpetiolata
Vol 27, Iss 4, Page 241, Date 1973
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Studies in the Eupatorieae (Asteraceae).CXVI. New species of Neomirandea
Vol 27, Page 245, Date 1973
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Studies in the Liabeae (Asteraceae). I. A new species of Liabum [L. moorei] from Mexico
Vol 27, Iss 4, Page 252, Date 1973
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Studies in the Senecioneae (Asteraceae). III. The genus Psacalium
Vol 27, Page 254, Date 1973
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Studies in the Senecioneae (Asteraceae). IV. The genera Mesadenia, Syneilesis, Miricacalia, Koyamacalia and Sinacalia
Vol 27, Page 265, Date 1973
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The generic limits of Pluchea and Tessania (Inuleae, Asteraceae)
Vol 27, Page 277, Date 1973
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Restoration of the genus Jaltomata (Solanaceae)
Vol 27, Page 286, Date 1973
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Notes on new and noteworthy plants. LXIV
Vol 27, Iss 4, Page 289, Date 1973
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Additional notes on the genus Aegiphila. XXII
Vol 27, Page 290, Date 1973
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Dalbergia simpsonii, a new legume from Peru
Vol 27, Page 305, Date 1973
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Seven transfers from Episcia species in cultivation (Gesneriaceae)
Vol 27, Page 307, Date 1973
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One hundred transfers from Alloplectus and Columnea (Gesneriaceae)
Vol 27, Page 309, Date 1973
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Cassia in Nicaragua
Vol 27, Page 330, Date 1973
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Notes on new and noteworthy plants. LXV
Vol 27, Iss 5, Page 349, Date 1973
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Additional notes on the genus Aegiphila. XXIII
Vol 27, Iss 5, Page 352, Date 1973
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Studies in the Eupatorieae (Asteraceae). CXVII. A new species of Oxylobus [O. subglabrus] from Oaxaca, Mexico
Vol 27, Iss 6, Page 385, Date 1974
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Studies in the Eupatorieae (Asteraceae) CXVIII. New species of Ageratum, Fleischmannia, and Hebeclinum from northern South America
Vol 27, Page 387, Date 1974
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Studies in the Senecioneae (Asteraceae). V. The genera Psacaliopsis, Barkleyanthus, Telanthophora and Roldana
Vol 27, Page 402, Date 1974
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A NEW COMBINATION IN SOUTH AMERICAN LINUM
Vol 27, Page 440, Date 1974
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Noteworthy grasses from Mexico
Vol 27, Page 441, Date 1974
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AN UNUSUAL FLORIDA PIPEWORT
Vol 27, Page 444, Date 1974
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A preliminary generic key and geographic checklist of the Boraginaceae in Central America and Panama
Vol 27, Page 445, Date 1974
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A study of stem anatomy in Begonia L
Vol 27, Page 464, Date 1974
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STUDIES ON THE LICHEN FAMILY THELOTREMATACEAE PART 2
Vol 27, Page 490, Date 1974
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A new Colombian species of Besleria [B. barclayi] (Gesneriaceae)
Vol 27, Iss 6, Page 502, Date 1974
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Additional notes on the genus Verbena. XVIII
Vol 27, Iss 6, Page 504, Date 1974