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Published in Rhodora, in 1950, in volume 52, issue 620, pages 185-188
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Published in PHYTOLOGIA, in 1950, in volume 3, issue 5, pages 282
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Published in Rhodora, in 1944, in volume 46, issue 542, pages 29-31
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Published in Sida, Contributions To Botany, in 1992, in volume 15, issue 2, pages 346-347
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Published in American Fern Journal, in 1960, in volume 50, pages 266-267
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Published in Rhodora, in 1950, in volume 52, issue 622, pages 229-232
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Published in Sida, Contributions To Botany, in 1967, in volume 3, issue 1, pages 1-76
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Published in Rhodora, in 1961, in volume 63, issue 748, pages 103-118
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Published in Rhodora, in 1965, in volume 67, issue 769, pages 63-82
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Published in Rhodora, in 1965, in volume 67, issue 770, pages 201-216
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Published in Botanical Gazette, in 1917, in volume 63, issue 5, pages 417-418
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Published in Sida, Contributions To Botany, in 1972, in volume 5, issue 1, pages 42-43
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Published in Biol Bull, in 1955, in volume 108, pages 346-358
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Published in Rhodora, in 1964, in volume 66, issue 765, pages 87-92
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Published in Rhodora, in 1962, in volume 64, issue 757, pages 60-62
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Published in The Auk, in 1903, in volume 20, pages 82-83
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Published in Torreya, in 1912, in volume 12, issue 9, pages 208-215
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Published in Torreya, in 1912, in volume 12, issue 8, pages 183-189
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Published in Torreya, in 1912, in volume 12, issue 5, pages 97-107
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Published in Torreya, in 1912, in volume 12, issue 7, pages 165-173
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Published in Biol Bull, in 1955, in volume 108, pages 359-365
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Published in Biol Bull, in 1952, in volume 103, pages 269-276
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Published in Rhodora, in 1981, in volume 83, issue 835, pages 465-470
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Published in Rhodora, in 1966, in volume 68, issue 774, pages 192-208
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Published in BULL BROOKLYN ENT SOC, in 1938, in volume 33, issue 3, pages 111-120
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Published in Rhodora, in 1954, in volume 56, issue 672, pages 261-265
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Published in Pacific Science, in 1964, in volume 18, issue 1, pages 101-103
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Published in Botanical Gazette, in 1908, in volume 45, issue 6, pages 367-408
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Published in Torreya, in 1917, in volume 17, issue 3, pages 49-52
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Published in Torreya, in 1913, in volume 13, issue 2, pages 33-36
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Published in Rhodora, in 1984, in volume 86, issue 847, pages 311-337
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