Published in The Great Basin Naturalist, in 1963, in volume 23, pages 166

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Published in Brigham Young University Science Bulletin - Biological Series, in 1963, in volume 4, pages 1-11

Created: 2012-11-10, modified: 2012-11-10

Published in Zoologischer Anzeiger, in 1879, in volume 2, pages 547-549

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Published in Zoologischer Anzeiger, in 1879, in volume 2, pages 618-620

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Published in Botanical Gazette, in 1899, in volume 27, issue 3, pages 212-213

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Published in Botanical Gazette, in 1899, in volume 27, issue 3, pages 208-212

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Published in Botanical Gazette, in 1904, in volume 38, issue 5, pages 378

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Published in Phytologia, in 1967, in volume 14, pages 205-212

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Published in Proceedings of The American Philosophical Society, in 1880, in volume 19, issue 107, pages 161-162

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Published in Proceedings of The American Philosophical Society, in 1888, in volume 25, issue 128, pages 212-225

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Published in Proceedings of The American Philosophical Society, in 1892, in volume 30, issue 138, pages 249-254

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Published in Annals of the Missouri Botanical Garden, in 1967, in volume 54, pages 178-181

Created: 2010-01-08, modified: 2015-12-16

Published in Contributions In Science (Los Angeles), in 1984, in volume 348, pages 1-20

Created: 2016-11-27, modified: 2023-02-16

Published in Proceedings of The American Philosophical Society, in 1869, in volume 11, issue 81, pages 317-367

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Published in Proceedings of The American Philosophical Society, in 1873, in volume 13, issue 81, pages 483-499

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Published in Proceedings of The American Philosophical Society, in 1887, in volume 24, issue 126, pages 229-241

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Published in Proceedings of The American Philosophical Society, in 1892, in volume 30, issue 137, pages 45-105

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Published in Proceedings of The American Philosophical Society, in 1893, in volume 31, issue 142, pages 325-333

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Published in Proceedings of The American Philosophical Society, in 1895, in volume 34, issue 147, pages 71-102

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Published in Proceedings of The American Philosophical Society, in 1897, in volume 36, issue 156, pages 438-440

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Published in Annals And Magazine of Natural History, in 1875, in volume 16, pages 41-53

Created: 2011-09-28, modified: 2011-09-28

Published in Wissenschaftlich Ergebnisse der Schwedischen Rhodesia-Kongo-Expedition 1911-1912, in 1921, in volume 1, pages 1-135

Created: 2016-07-15, modified: 2016-07-15

Published in Proceedings of The American Philosophical Society, in 1887, in volume 24, issue 126, pages 437-444

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Published in Proceedings of The American Philosophical Society, in 1888, in volume 25, issue 128, pages 225-231

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Published in Proceedings of The American Philosophical Society, in 1889, in volume 26, issue 130, pages 506-527

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Published in Proceedings of The American Philosophical Society, in 1890, in volume 28, issue 134, pages 242-259

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Published in Proceedings of The American Philosophical Society, in 1892, in volume 30, issue 137, pages 22-31

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Published in Proceedings of The American Philosophical Society, in 1894, in volume 33, issue 145, pages 187-192

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Published in Proceedings of The American Philosophical Society, in 1895, in volume 34, issue 149, pages 403-415

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Published in Proceedings of The American Philosophical Society, in 1898, in volume 37, issue 158, pages 178-205

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Published in Novon, in 2001, in volume 11, pages 484-488

Created: 2011-01-28, modified: 2016-02-16

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1897, in volume 49, pages 522-529

Created: 2013-03-02, modified: 2013-03-02

Published in Proceedings of The American Philosophical Society, in 1869, in volume 11, issue 81, pages 301-309

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Published in Proceedings of The American Philosophical Society, in 1884, in volume 21, issue 115, pages 345-412

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Published in Proceedings of The American Philosophical Society, in 1886, in volume 23, issue 124, pages 546-561

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Published in Proceedings of The American Philosophical Society, in 1887, in volume 24, issue 126, pages 366-377

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Published in Proceedings of The American Philosophical Society, in 1890, in volume 28, issue 132, pages 39-52

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Published in Proceedings of The American Philosophical Society, in 1895, in volume 34, issue 149, pages 361-364

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Published in Proceedings of The American Philosophical Society, in 1898, in volume 37, issue 158, pages 321-323

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Published in Annals of the Missouri Botanical Garden, in 1966, in volume 53, pages 377

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Published in Journal of the Arnold Arboretum, in 1972, in volume 53, pages 26-51

Created: 2011-01-27, modified: 2011-06-21

Published in American Fern Journal, in 1972, in volume 62, pages 1-8

Created: 2017-04-23, modified: 2017-04-23

Published in Journal of the Arnold Arboretum, in 1970, in volume 51, pages 427-430

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Published in Journal of the Arnold Arboretum, in 1970, in volume 51, pages 18-40

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Published in Journal of the Arnold Arboretum, in 1971, in volume 52, pages 69-85

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Published in Journal of the Arnold Arboretum, in 1971, in volume 52, pages 159-195

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Published in Journal of the Arnold Arboretum, in 1971, in volume 52, pages 305-318

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Published in Proceedings of The American Philosophical Society, in 1879, in volume 18, issue 103, pages 259-260

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Published in Proceedings of The American Philosophical Society, in 1885, in volume 22, issue 120, pages 332-354

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Published in Proceedings of The American Philosophical Society, in 1886, in volume 23, issue 121, pages 48-86

Created: 2017-01-01, modified: 2017-01-01