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  1. A botanical exploration of the north shore of the gulf of St. Lawrence including an annotated list of the species of vascular plants,
    By: St. John, Harold.
    Publication info: Ottawa,F. A. Acland, printer,1922.
    Contributed by: Harold B. Lee Library (archive.org)
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  2. Nomenclature of plants; a text for the application by the case method of the International code of botanical nomenclature.
    By: St. John, Harold.
    Publication info: New York,Ronald Press Co.[1958]
    Contributed by: MBLWHOI Library
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  3. Sable Island, with a catalogue of its vascular plants / by Harold St. John.
    By: St. John, Harold.
    Publication info: Boston :Gray Herbarium of Harvard University,1921.
    Contributed by: University of California Libraries (archive.org)
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  1. Additions to the Flora of Futuna Island, Horne Islands Pacific Plant Studies 33
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 36
    Date: 1977
    Page Range: 367--373
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  2. Cenchrus laysanensis (Gramineae) of the Leeward Islands
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 31
    Date: 1975
    Page Range: 22--24
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  3. The crinite headed Hieraciums of the northwest
    By: St. John, Harold. - Warren, F A
    Type: Article
    In: Proceedings of The Biological Society of Washington
    Volume: 41
    Date: 1928
    Page Range: 107--109
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  4. Diagnoses of Panicum species (Gramineae). Hawaiian plant studies 49
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 63
    Date: 1987
    Page Range: 368--395
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  5. Diagnoses of some Phanerogamae: Hawaiian Plant Studies 165
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 64
    Date: 1988
    Page Range: 177--178
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  6. Endemism in the Hawaiian flora, and a revision of the Hawaiian species of Gennera (Haloragidaceae). Hawaiian Plant Studies 11
    By: St. John, Harold.
    Type: Article
    In: Proceedings of the California Academy of Sciences
    Volume: 25
    Series: 4
    Date: 1946
    Page Range: 377--420
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  7. Evaluation of Waltheria indica L. and W. americana L. (Sterculiaceae). Pacific Plant Studies 28
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 33
    Date: 1976
    Page Range: 89--92
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  8. The Flora of Niuatoputapu Island, Tonga Pacific Plant Studies 32
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 36
    Date: 1977
    Page Range: 374--390
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  9. Monograph of the genus Elodea, summary
    By: St. John, Harold.
    Type: Article
    In: Rhodora
    Volume: 67
    Date: 1965
    Page Range: 155--180
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  10. More variants of Scaevola taccada (Goodeniaceae) Hawaiian plant studies 43
    By: St. John, Harold.
    Type: Article
    In: Proceedings of The Biological Society of Washington
    Volume: 88
    Date: 1975
    Page Range: 73--75
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  11. NEW COMBINATIONS IN ZANTHOXYLUM RUTACEAE HAWAIIAN USA PLANT STUDIES PART 44
    By: St. John, Harold.
    Type: Article
    In: Rhodora
    Volume: 78
    Date: 1976
    Page Range: 73--74
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  12. A new species of Panicum (Gramineae) from Molokai. Hawaiian plant studies
    By: St. John, Harold.
    Type: Article
    In: Rhodora
    Volume: 78
    Date: 1976
    Page Range: 542--545
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  13. Nomenclatorial changes in Glossopetalon (Celastraceae)
    By: St. John, Harold.
    Type: Article
    In: Proceedings of The Biological Society of Washington
    Volume: 55
    Date: 1942
    Page Range: 109--112
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  14. Novelties in PAnicum (Gramineae) from Kahoolawe. HAwaiian plant studies 102
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 47
    Date: 1981
    Page Range: 374--378
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  15. Plants collected in the Sandwich Islands by Thomas Nuttall. Hawaiian Plant Studies 85
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 41
    Date: 1979
    Page Range: 441--446
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  16. Plants collected on the Sandwich Islands by George Barclay. Hawaiian Plant Studies 89
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 43
    Date: 1979
    Page Range: 281--286
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  17. Plants of the Sandwich Islands collected by Archibald Menzies
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 38
    Date: 1977
    Page Range: 1--6
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  18. Plants of the Sandwich Islands collected by James Macrae. Hawaiian Plant Studies 77
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 39
    Date: 1978
    Page Range: 307--319
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  19. Revision of Joinvillea (Joinvilleaceae). Pacific plant studies 37
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 40
    Date: 1978
    Page Range: 369--374
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  20. A revision of the loco-weeds of Washington
    By: St. John, Harold.
    Type: Article
    In: Proceedings of The Biological Society of Washington
    Volume: 41
    Date: 1928
    Page Range: 97--106
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  21. A revision of the North American species of Potamogeton of the section Coleophylli
    By: St. John, Harold.
    Type: Article
    In: Rhodora
    Volume: 18
    Date: 1916
    Page Range: 121--138
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  22. Typification of the Hawaiian plants described by Asa Gray from the Wilkes Expedition Collections, and an enumeration of the other Hawaiian collections. Hawaiian plant studies 54
    By: St. John, Harold.
    Type: Article
    In: Rhodora
    Volume: 87
    Date: 1985
    Page Range: 565--595
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  23. The Variability of the Hawaiin Maile (Alyxia olivaeformis), Apocynaceae
    By: St. John, Harold.
    Type: Article
    In: Phytologia
    Volume: 32
    Date: 1975
    Page Range: 377--386
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  24. The Washington species of Draba
    By: Payson, E B - St. John, Harold.
    Type: Article
    In: Proceedings of The Biological Society of Washington
    Volume: 43
    Date: 1930
    Page Range: 97--122
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