By Cron Glynis V.   Balkwill Kevin   Knox Eric B.   in Taxon

ISSN:1996-8175|57|3|779-798

International Association for Plant Taxonomy‎(2008)‎

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By Cron Glynis V.   Pirone Cary   Bartlett Madelaine   Kress W. John   Specht Chelsea   in Systematic Botany

ISSN:1548-2324|37|3|606-619

American Society of Plant Taxonomists‎(2012)‎

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