Published in Botanical Museum Leaflets, Harvard University, in 1964, in volume 20, pages 334-335

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Published in Botanical Museum Leaflets, Harvard University, in 1949, in volume 13, pages 213-247

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Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 14, pages 263-291

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Published in Botanical Museum Leaflets, Harvard University, in 1945, in volume 12, pages 33-75

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Published in Botanical Museum Leaflets, Harvard University, in 1967, in volume 22, pages 1-31

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Published in Botanical Museum Leaflets, Harvard University, in 1967, in volume 22, pages 33-63

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Published in Annals of the Missouri Botanical Garden, in 1948, in volume 35, pages 377-406

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Published in Botanical Museum Leaflets, Harvard University, in 1956, in volume 17, pages 151-178

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Published in Botanical Museum Leaflets, Harvard University, in 1959, in volume 18, pages 329-356

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Published in Botanical Museum Leaflets, Harvard University, in 1959, in volume 18, pages 413-427

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Published in Botanical Museum Leaflets, Harvard University, in 1959, in volume 18, pages 428-440

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Published in Botanical Museum Leaflets, Harvard University, in 1942, in volume 10, pages 217-252

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Published in Botanical Museum Leaflets, Harvard University, in 1956, in volume 17, pages 125-150

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Published in Botanical Museum Leaflets, Harvard University, in 1959, in volume 18, pages 389-411

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Published in Botanical Museum Leaflets, Harvard University, in 1959, in volume 18, pages 357-387

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Published in Botanical Museum Leaflets, Harvard University, in 1977, in volume 25, pages 221-242

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Published in Botanical Museum Leaflets, Harvard University, in 1956, in volume 17, pages 101-124

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Published in Botanical Museum Leaflets, Harvard University, in 1978, in volume 26, pages 237-255

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Published in Torreya, in 1909, in volume 9, issue 4, pages 74-77

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Published in Madroño, in 1944, in volume 7, issue 8, pages 258

Created: 2016-02-15, modified: 2023-02-16

Published in Palaeontology, in 1968, in volume 11, issue 4, pages 580-600

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Published in Rhodora, in 1919, in volume 21, issue 243, pages 69-70

Created: 2016-07-19, modified: 2023-02-16

Published in Rhodora, in 1943, in volume 45, issue 532, pages 167

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Published in Psyche: A Journal of Entomology, in 1926, in volume 33, issue 6, pages 151-155

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Published in Phytologia, in 1983, in volume 52, issue 6, pages 373-375

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Published in Madroño, in 1957, in volume 14, issue 2, pages 41-51

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Published in Palaeontology, in 1968, in volume 11, issue 5, pages 697-730

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Published in Palaeontology, in 1972, in volume 15, issue 1, pages 1-28

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Published in Palaeontology, in 1982, in volume 25, issue 3, pages 499-507

Created: 2016-04-23, modified: 2016-04-23

Published in Rhodora, in 1919, in volume 21, issue 247, pages 117-120

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Published in Torreya, in 1914, in volume 14, issue 2, pages 21-24

Created: 2022-12-14, modified: 2022-12-14

Published in Madroño, in 1988, in volume 35, issue 2, pages 159-161

Created: 2016-02-15, modified: 2023-02-16

Published in Palaeontology, in 1967, in volume 10, issue 4, pages 525-541

Created: 2016-04-23, modified: 2016-04-23

Published in Torreya, in 1915, in volume 15, issue 1, pages 9-11

Created: 2022-12-14, modified: 2022-12-14

Published in Torreya, in 1918, in volume 18, issue 5, pages 91-94

Created: 2022-12-14, modified: 2022-12-14

Published in American Fern Journal, in 1915, in volume 5, pages 65-78

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

Published in Rhodora, in 1932, in volume 34, issue 405, pages 174-177

Created: 2016-07-19, modified: 2023-02-16

Published in Madroño, in 1948, in volume 9, issue 5, pages 149-155

Created: 2016-02-15, modified: 2023-02-16

Published in Palaeontology, in 1983, in volume 26, issue 4, pages 687-734

Created: 2016-04-23, modified: 2016-04-23

Published in Nuytsia, in 2016, in volume 27, pages 33-73

Created: 2020-09-06, modified: 2023-03-22

Published in Rhodora, in 1929, in volume 31, issue 370, pages 193-194

Created: 2014-06-16, modified: 2023-02-16

Published in Madroño, in 1996, in volume 43, issue 3, pages 345-354

Created: 2016-02-15, modified: 2023-02-16

Published in Journal of The Arnold Arboretum, in 1920, in volume 2, issue 2, pages 111-112

Created: 2016-07-07, modified: 2025-12-17

Published in Bull. Zool. Nom., in 1967, in volume 24, pages 304-307

Created: 2009-12-23, modified: 2023-05-10

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 1-172

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

Published in Bulletin du Muséum national d'histoire naturelle, in 1933, in volume 5, issue 4, pages 285-289

Created: 2021-12-15, modified: 2021-12-15

Published in Palaeontology, in 1985, in volume 28, issue 3, pages 527-543

Created: 2016-04-23, modified: 2016-04-23

Published in The Wilson Bulletin, in 1993, in volume 105, issue 3, pages 427-435

Created: 2017-08-22, modified: 2023-02-16

Published in Molluscan Research, in 2003, in volume 23, issue 2, pages 101-107

Created: 2024-12-29, modified: 2024-12-29

Published in Bulletin of The British Ornithologists' Club, in 2008, in volume 128, issue 4, pages 267-268

Created: 2015-08-11, modified: 2015-08-11