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 Boccone, however, as early as 1697 figured the two forms as distinct. They are undoubtedly closely related, and intermediate forms are to be found difficult of assignment exclusively to either category, but this may also be said of H. coralloides and...  A Contribution to a Revision of the North American Hydnaceae - Pàgina 115 per Howard James Banker - 1906 - 96 pàgines Visualització completa -
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