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The nomenclature and synonymy of the Amaranthaceae, Chenopodiaceae and Nycteginaceae of the flora of Texas
Vol 18, Iss 1, Page 1, Date 1968
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Additional notes on the Eriocaulaceae. XVII
Vol 18, Iss 1, Page 44, Date 1968
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NOTES ON THE GROWTH OF ULVA AS A FUNCTION OF AMMONIA NITROGEN
Vol 18, Page 65, Date 1969
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Five novelties in the Verbenaceae
Vol 18, Page 70, Date 1969
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Annotated list of fungi on Verbenaceous hosts from the 'Mycologia Index'
Vol 18, Page 113, Date 1969
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Additional records for Porella pinnata in southeastern United States
Vol 18, Iss 2, Page 129, Date 1969
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Notes on Bromeliaceae, XXIX
Vol 18, Page 137, Date 1969
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Mimosa bahamensis, a Bahama-Yucatan disjunct
Vol 18, Page 143, Date 1969
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Certamen Melastomataceis XIII
Vol 18, Iss 3, Page 147, Date 1969
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New tree species from Esmeraldas, Ecuador
Vol 18, Page 195, Date 1969
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Six addtional verbenaceons novelties
Vol 18, Iss 4, Page 209, Date 1969
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Qataria Reed, nom. nov. for Polygonella Elliott
Vol 18, Iss 4, Page 212, Date 1969
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Notes on Neotropical Euphorbiaceae 4. Monograph of the genus Actinostemon
Vol 18, Page 213, Date 1969
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Additional notes on the Eriocaulaceae. XX
Vol 18, Page 241, Date 1969
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Flora of the Prairie provinces. Part II (continued). Additions and corrections
Vol 18, Iss 5, Page 281, Date 1969
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A half dozen noteworthy phanerogams
Vol 18, Iss 5, Page 294, Date 1969
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Additional notes on the Eriocaulaceae. XXI
Vol 18, Page 295, Date 1969
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Ormosia schunkei, another new species from Peru
Vol 18, Page 337, Date 1969
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Homonymy in Arthrospira Stizenb. (Oscillatoriaeceae)
Vol 18, Iss 6, Page 339, Date 1969
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A FURTHER NOTE ON CHROMOSOME NUMBERS OF THAILAND COMPOSITAE-D PLUCHEA-INDICA-D
Vol 18, Page 340, Date 1969
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Additional notes on the Eriocaulaceae. XXII
Vol 18, Page 344, Date 1969
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A new species of Cordia [C. porcata] (Boraginaceae) from Panama
Vol 18, Iss 6, Page 397, Date 1969
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Psilopilum mexicanum sp. nov
Vol 18, Page 401, Date 1969
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NEW COMBINATIONS IN POLYTRICHACEAE
Vol 18, Page 403, Date 1969
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New tree species from Esmeraldas, Ecuador (Continued)
Vol 18, Page 404, Date 1969
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Two new species [Scutellaria lewisiana, Cordia dwyeri] from Panama
Vol 18, Iss 7, Page 419, Date 1969
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Three new subspecific taxa in Petrea, Permna, and Vitez
Vol 18, Iss 7, Page 421, Date 1969
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ADDITIONAL NOTES ON THE ERIOCAULACEAE-M XXIII
Vol 18, Page 422, Date 1969
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New tree species from Esmeraldas, Ecuador (Continued)
Vol 18, Page 457, Date 1969
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A synopsis of the genus Piscidia (Leguminosae)
Vol 18, Page 473, Date 1969
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A NEW SPECIES OF LANTANA-D FROM HISPANIOLA
Vol 18, Page 500, Date 1969