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A revision of the moss genus, Hymenostyliella, with description of sporophyte
Vol 21, Page 1, Date 1971
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A new species of Cyclodictyon from Costa Rica
Vol 21, Page 4, Date 1971
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Bryophytes of Monteverde, Costa Rica
Vol 21, Page 6, Date 1971
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Studies in the Eupatorieae (Compositae). XXXIII. The genus Gyptis
Vol 21, Iss 1, Page 22, Date 1971
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Studies in the Eupatoricae (Compositae). XXXIV. A new genus, Barrosoa
Vol 21, Iss 1, Page 26, Date 1971
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Studies in the Eupatoricae (Compositae). XXXV. A new genus, Lourteigia
Vol 21, Iss 1, Page 28, Date 1971
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Additional notes on the genus Hierobotana. I
Vol 21, Iss 1, Page 31, Date 1971
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Additional materials toward a monograph of the genus Callicarpa. XII
Vol 21, Iss 1, Page 32, Date 1971
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Some types and range extensions in Hybanthus (Violaceae)
Vol 21, Page 56, Date 1971
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Miscellaneous additions and revisions to the flowering plants of Jamaica II
Vol 21, Iss 2, Page 65, Date 1971
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Scaevola kilaueae var. Deg. & Deg
Vol 21, Iss 2, Page 72, Date 1971
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Notes on Bromeliaceae, XXXII
Vol 21, Page 73, Date 1971
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Additional materials toward a monograph of the genus Callicarpa. XIII
Vol 21, Iss 2, Page 101, Date 1971
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Certamen Melastomataceis XVI
Vol 21, Iss 2, Page 115, Date 1971
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A list of Jamaican species of Cynanchum (Asclepiadaceae)
Vol 21, Page 137, Date 1971
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Rumex of Hawaii
Vol 21, Iss 3, Page 139, Date 1971
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ADDITIONAL NOTES ON THE GENUS PETITIA PART 3
Vol 21, Page 146, Date 1971
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Additional materials toward a monograph of the genus Callicarpa. XIV
Vol 21, Page 149, Date 1971
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The genus Columnea (Gesneriaceae) in Panama
Vol 21, Iss 3, Page 165, Date 1971
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SOME NEW DISCOMYCETE NAMES
Vol 21, Page 201, Date 1971
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ADDITIONAL MATERIALS TOWARD A MONOGRAPH OF THE GENUS CALLICARPA-D PART 15
Vol 21, Page 208, Date 1971
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An overview of the Hookeriales
Vol 21, Page 243, Date 1971
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Five more novelties in the Verbenaceae
Vol 21, Iss 4, Page 253, Date 1971
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New North American unifoliolate Crotalaria taxa (Leguminosae)
Vol 21, Page 257, Date 1971
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Additional notes on the Eriocaulaceae. XXXVI
Vol 21, Iss 4, Page 267, Date 1971
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OBSERVATIONS ON MENTZELIA-D IN SOUTHERN CALIFORNIA
Vol 21, Page 279, Date 1971
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A revised classification for the orders and families of mosses
Vol 21, Page 289, Date 1971
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Studies in the Eupatorieae (Asteraceae)---XXXVI. A new genus, Neobartlettia
Vol 21, Page 294, Date 1971
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Studies in the Eupatorieae (Asteraceae)---XXXVII. The genus Hebeclinium
Vol 21, Page 298, Date 1971
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Studies in the Eupatorieae (Asteraceae). XXXIX. A new genus, Guyania
Vol 21, Iss 5, Page 302, Date 1971
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Studies in the Eupatorieae (Asteraceae). XL. The genus, Urolepis
Vol 21, Iss 5, Page 304, Date 1971
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Studies in the Eupatorieae (Asteraceae) XLI. The genus Eupatoriastrum
Vol 21, Page 306, Date 1971
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Re-establishment of the genus Aldama (Compositae-Heliantheae)
Vol 21, Page 308, Date 1971
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SOME ALEURITES-D TAXA IN HAWAII AND A NOTE REGARDING ARGEMONE-D
Vol 21, Page 315, Date 1971
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PRITCHARDIA-M AND COCOS-M IN THE HAWAIIAN ISLANDS
Vol 21, Page 320, Date 1971
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Studies in the Sophoreae (Leguminosae) I
Vol 21, Iss 5, Page 327, Date 1971
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Additional materials toward a monograph of the genus Callicarpa. XVI
Vol 21, Iss 5, Page 328, Date 1971
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Two new varieties of pipewort
Vol 21, Iss 5, Page 352, Date 1971
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ADDITIONAL MATERIAL TOWARD A MONOGRAPH OF THE GENUS CALLICARPA-D PART 17
Vol 21, Page 375, Date 1971
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Four new species of mosses from Peru
Vol 21, Page 389, Date 1971
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Studies in the Eupatorieae (Asteraceae)---XXXVIII. A new genus Peteravenia
Vol 21, Page 394, Date 1971
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Studies in the Eupatorieae (Asteraceae)---LXV. A new genus Fleischmanniopsis
Vol 21, Page 402, Date 1971
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Sophora in Hawaii
Vol 21, Page 411, Date 1971
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PARMELIA-PERMACULATA A NEW SPECIES OF LICHEN FROM ALABAMA AND MEXICO
Vol 21, Page 425, Date 1971
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ADDITIONAL NOTES ON THE ERIOCAULACEAE-M PART 37
Vol 21, Page 426, Date 1971
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Nomenclatural notes on the Orchidaceae---IV
Vol 21, Page 433, Date 1971
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Nomenclatural notes on the Orchidaceae - V
Vol 21, Page 440, Date 1971
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ADDITIONAL MATERIALS TOWARD A MONOGRAPH OF THE GENUS CALLICARPA-D PART 18
Vol 21, Page 444, Date 1971