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Authors: F J W Schmidt

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Authors: J C Cunningham | W J Kaupp | N V Tonks

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Authors: Heinrich Georg Winter

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Authors: Heinrich Georg Winter

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Authors: B De Winter

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Authors: Gerald Z Jacobi | Richard W Baumann

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Authors: J Büttikofer

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Authors: C R Nelson | R W Baumann

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Authors: Lynds Jones

Published in The Wilson Bulletin, in 1914, in volume 26, issue 1, pages 18-19

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Published in Botanical Gazette, in 1919, in volume 67, issue 2, pages 173-174

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Authors: Karen J Kreisel | Steven J Stein

Published in The Wilson Bulletin, in 1999, in volume 111, issue 2, pages 243-250

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Authors: J Murray Speirs

Published in The Wilson Bulletin, in 1953, in volume 65, issue 3, pages 175-183

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Authors: Charles W Townsend

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Authors: Jean W Graber | Richard R Graber

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Authors: J P Stober

Published in Botanical Gazette, in 1917, in volume 63, issue 2, pages 89-109

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Authors: Tom J Cade

Published in The Wilson Bulletin, in 1955, in volume 67, issue 1, pages 5-17

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