Published in Rhodora, in 1960, in volume 62, issue 739, pages 199-201
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Published in Brigham Young University science bulletin, in 1975, in volume 20, issue 1, pages 1-42
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Published in Phytologia, in 1982, in volume 50, issue 5, pages 330-356
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Published in Rhodora, in 1998, in volume 100, issue 901, pages 96
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Published in Rhodora, in 1900, in volume 2, issue 13, pages 6-8
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Published in Rhodora, in 1914, in volume 16, issue 188, pages 141-144
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Published in PHYTOLOGIA, in 1965, in volume 12, issue 7, pages 414-426
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Published in Madroño, in 1946, in volume 8, issue 6, pages 193-195
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Published in Rhodora, in 1939, in volume 41, issue 489, pages 392-415
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Published in Rhodora, in 1956, in volume 58, issue 690, pages 148-157
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Published in Rhodora, in 1960, in volume 62, issue 741, pages 242-244
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Published in Rhodora, in 1952, in volume 54, issue 642, pages 161-163
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Published in Rhodora, in 1951, in volume 53, issue 626, pages 56-61
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Published in Rhodora, in 1940, in volume 42, issue 500, pages 302-306
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Published in Rhodora, in 1961, in volume 63, issue 752, pages 223-225
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Published in Botanical Gazette, in 1892, in volume 17, issue 10, pages 330
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Published in Botanical Gazette, in 1894, in volume 19, issue 8, pages 336-337
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Published in Madroño, in 1936, in volume 3, issue 8, pages 359-362
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Published in Torreya, in 1915, in volume 15, issue 11, pages 246-247
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Published in Biol Bull, in 1967, in volume 132, pages 23-33
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Published in Veliger, in 1966, in volume 9, pages 67-68
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Published in Phytologia, in 1978, in volume 39, issue 2, pages 112-126
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Published in Zoologica, in 1961, in volume 46, issue 15, pages 167-180
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Published in Rhodora, in 1961, in volume 63, issue 745, pages 1-10
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Published in Rhodora, in 1953, in volume 55, issue 655, pages 229-235
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Published in Phytologia, in 1970, in volume 19, issue 5, pages 311-312
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Published in Rhodora, in 1956, in volume 58, issue 687, pages 72
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Published in Rhodora, in 1956, in volume 58, issue 687, pages 73-76
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Published in Rhodora, in 1962, in volume 64, issue 757, pages 1-2
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Published in Rhodora, in 1964, in volume 66, issue 766, pages 97-99
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Published in Torreya, in 1916, in volume 16, issue 6, pages 125-130
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Published in Phytologia, in 1965, in volume 12, pages 369-400
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Published in Rhodora, in 1960, in volume 62, issue 733, pages 11-20
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Published in Phytologia, in 1964, in volume 9, issue 8, pages 497-500
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Published in Phytologia, in 1964, in volume 10, issue 3, pages 169
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Published in Phytologia, in 1967, in volume 14, issue 7, pages 393
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