Published in Forktail, in 1987, in volume 3, pages 63-66
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1858, pages 1-3
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), pages 1
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), pages 1
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1860, pages 1-3
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1854, pages 1-5
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1854, pages 1-2
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1854, pages 1
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1857, pages 1-2
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1858, pages 1-3
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1855, pages 1
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1856, pages 1-3
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1854, pages 1
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1860, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1857, pages 1-2
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1860, pages 1-2
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Published in Journal of South African botany, in 1949, in volume 15, pages 43-48
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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), pages 1
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Published in Madroño, in 1939, in volume 5, issue 4, pages 135-136
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Published in Biol Bull, in 1955, in volume 108, pages 182-195
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Published in Rhodora, in 1917, in volume 19, issue 222, pages 105-110
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Published in Rhodora, in 1917, in volume 19, issue 223, pages 119-130
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Published in Novon, in 2004, in volume 14, pages 29-32
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Published in Rhodora, in 1964, in volume 66, issue 768, pages 313-343
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Published in Rhodora, in 1921, in volume 23, issue 266, pages 43-47
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Published in American Fern Journal, in 1954, in volume 44, pages 49-65
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Published in Journal of South African botany, in 1952, in volume 18, pages 123-134
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Published in Journal of South African botany, in 1954, in volume 20, pages 125-126
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Published in Entomological News, in 1984, in volume 95, pages 43-44
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Published in Entomologist's Record and Journal of Variation, in 1981, in volume 93, issue 1, pages 7-10
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Published in Entomologist's Record and Journal of Variation, in 1981, in volume 93, issue 2, pages 30-35
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Published in Journal of South African botany, in 1954, in volume 20, pages 127-136
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Published in Biol Bull, in 1976, in volume 150, pages 453-467
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Published in Phytoneuron, in 2012, in volume 2012-112, pages 1-5
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Published in Proceedings of The Biological Society of Washington, in 1988, in volume 101, pages 234-250
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Published in Journal of South African botany, in 1964, in volume 30, pages 177-200
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Published in Torreya, in 1924, in volume 24, issue 4, pages 55-57
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Published in The Wilson Bulletin, in 1975, in volume 87, issue 2, pages 297-302
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Published in Madroño, in 1933, in volume 2, issue 13, pages 110-112
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Published in Journal of South African botany, in 1950, in volume 16, pages 39-45
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Published in Journal of South African botany, in 1957, in volume 23, pages 105-109
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Published in Novon, in 2002, in volume 12, pages 170-172
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Published in Journal für Ornithologie, in 1901, in volume 49, pages 230-245
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Published in Biol Bull, in 1992, in volume 182, pages 248-256
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Published in Phytologia, in 2022, in volume 104, issue 1, pages 1-3
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Published in Entomological News, in 1989, in volume 100, pages 169-172
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Published in Amphipacifica, in 1994, in volume 1, issue 3, pages 76-134
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Published in Madroño, in 1974, in volume 22, issue 8, pages 397-400
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Published in Palaeontology, in 1993, in volume 36, issue 1, pages 65-79
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