The taxa of fossil Mollusca introduced by Hermann von Ihering von Parodiz, Juan José, Cruz Urquiola, Armando, Kral, Robert, Rose, Kenneth David 1949-, Bown, Thomas M.

Two new species of Xyris from Cuba von Urquiola Cruz, Armando J., Kral, Robert

Cyperus Echinatus and Cyperus Croceus, the correct names for North American Cyperus Ovularis and Cyperus Globulosus (Cyperaceae) von Carter, Richard, Kral, Robert

The genus Xyris (Xyridaceae) in Venezuela and contiguous northern South America von Kral, Robert

A treatment of American Xyridaceae exclusive of Xyris von Kral, Robert

A report on some rare, threatened, or endangered forest - related vascular plants of the South von Kral, Robert

Flora of Ecuador von Kral, Robert

A report on some rare, threatened, or endangered forest - related vascular plants of the South von Kral, Robert

A report on some rare, threatened, or endangered forest - related vascular plants of the South von Kral, Robert

Flora of the Guianas

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