Published in American Fern Journal, in 2009, in volume 99, pages 56-58

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Published in American Fern Journal, in 1989, in volume 79, pages 26-27

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Published in Journal of The Botanical Research Institute of Texas, in 2012, in volume 6, issue 2, pages 330

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Published in Annals of the Missouri Botanical Garden, in 1994, in volume 81, pages 810-811

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Published in American Fern Journal, in 1997, in volume 87, pages 154

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Published in American Fern Journal, in 2000, in volume 90, pages 49-50

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Published in Sida, Contributions To Botany, in 1999, in volume 18, issue 4, pages 1290-1292

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Published in Phytologia, in 1982, in volume 52, pages 73-74

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Published in George Bentham letters to Asa Gray, 1839-1883, pages 1-2

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Published in George Bentham letters to Asa Gray, 1839-1883, pages 1-2

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Published in George Bentham letters to Asa Gray, 1839-1883, pages 1-2

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1843, pages 1-0

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1843, pages 1-0

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1842, pages 1

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1850, pages 1-2

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1850, pages 1-2

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1850, pages 1-2

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1845, pages 1-0

Created: 2017-06-24, modified: 2017-06-24

Published in George Bentham letters to Asa Gray, 1839-1883, in 1845, pages 1-0

Created: 2017-06-24, modified: 2017-06-24

Published in George Bentham letters to Asa Gray, 1839-1883, in 1844, pages 1-0

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1849, pages 1-0

Created: 2017-06-24, modified: 2017-06-24

Published in George Bentham letters to Asa Gray, 1839-1883, in 1849, pages 1-0

Created: 2017-06-24, modified: 2017-06-24

Published in George Bentham letters to Asa Gray, 1839-1883, in 1849, pages 1-0

Created: 2017-06-24, modified: 2017-06-24

Published in George Bentham letters to Asa Gray, 1839-1883, in 1843, pages 1-0

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1848, pages 1-0

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Published in George Bentham letters to Asa Gray, 1839-1883, in 1846, pages 1-0

Created: 2017-06-24, modified: 2017-06-24

Published in George Bentham letters to Asa Gray, 1839-1883, in 1842, pages 1

Created: 2017-06-24, modified: 2017-06-24