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Published in Rhodora, in 1964, in volume 66, issue 768, pages 375-381
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Published in Rhodora, in 1983, in volume 85, issue 841, pages 97-113
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Published in Phytologia, in 1983, in volume 53, issue 3, pages 184-186
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Published in The Wilson Bulletin, in 1944, in volume 56, issue 3, pages 152-160
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Published in Proceedings of The Biological Society of Washington, in 1975, in volume 88, pages 127-139
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Published in Proceedings of The United States National Museum, in 1923, in volume 64, pages 1-4
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Published in Journal of The Arnold Arboretum, in 1961, in volume 42, issue 2, pages 157-164
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Published in The Wilson Bulletin, in 1977, in volume 89, issue 2, pages 286-290
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Published in Biol Bull, in 1971, in volume 141, pages 235-246
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Published in Annals And Magazine of Natural History, in 1905, in volume 15, pages 387-390
Created: 2011-09-22, modified: 2011-09-22![](https://www.biodiversitylibrary.org/pagethumb/34649317,60,60)
Published in Proceedings of The Biological Society of Washington, in 1985, in volume 98, pages 1028-1029
Created: 2011-06-10, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/47826545,60,60)
Published in Madroño, in 1963, in volume 17, issue 3, pages 91-92
Created: 2016-02-15, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/47943937,60,60)
Published in Madroño, in 1988, in volume 35, issue 2, pages 112-116
Created: 2016-02-15, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/53112962,60,60)
in 1887, pages 1-8
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/929105,60,60)
Published in Biol Bull, in 1928, in volume 54, pages 529-533
Created: 2010-01-06, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/1538785,60,60)
Published in Biol Bull, in 1970, in volume 138, pages 138-156
Created: 2010-01-06, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/1568841,60,60)
Published in Biol Bull, in 1975, in volume 149, pages 96-108
Created: 2010-01-06, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/18641198,60,60)
Published in Annals and Magazine of Natural History, in 1914, in volume 13, pages 439-444
Created: 2010-11-20, modified: 2013-09-08![](https://www.biodiversitylibrary.org/pagethumb/24722968,60,60)
Published in Annals And Magazine of Natural History, in 1881, in volume 7, pages 469-471
Created: 2011-09-29, modified: 2011-09-29![](https://www.biodiversitylibrary.org/pagethumb/2775573,60,60)
Published in Bulletin Museum of Comparative Zoology Harvard, in 1939, in volume 86, pages 25-128
Created: 2012-05-08, modified: 2012-05-08![](https://www.biodiversitylibrary.org/pagethumb/45651835,60,60)
Published in Scopus, in 2003, in volume 23, pages 13-28
Created: 2014-08-10, modified: 2014-08-10![](https://www.biodiversitylibrary.org/pagethumb/8441933,60,60)
Published in Journal of The Arnold Arboretum, in 1961, in volume 42, issue 1, pages 110-111
Created: 2016-07-07, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/33354293,60,60)
Published in Rhodora, in 1990, in volume 92, issue 869, pages 1-10
Created: 2016-07-19, modified: 2016-07-19