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Published in Botanical Gazette, in 1904, in volume 37, issue 6, pages 437-447
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Published in Botanical Gazette, in 1890, in volume 15, issue 7, pages 177-179
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Published in Cr Ac Sci, in 1902, in volume 134, pages 961-964
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Published in Proceedings of the California Academy of Sciences, in 1927, in volume 16, pages 361-363
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Published in Rhodora, in 1902, in volume 4, issue 41, pages 94-97
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