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Two new species of Rhynchospora (Cyperaceae) from Mexico

Two new species ofRhynchospora from Mexico are described and illustrated. The white-bractedR. oaxacana is clearly a member of subsectionLongibracteatae which is otherwise found only in South America. A key to all the species of that subsection is provided. The thickened achene summit and slightly sunken style base appear to placeR. durangensis in sectionHarveyae.