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Keywords from Image Description:
Piptatheropsis pungens as Oryzopsis pungens HC. en Piptatheropsis pungens Torr Romasch Peterson Soreng captioned Oryzopsis pungens mountain ricegrass usda gov symbol PIPTA USDANRCS PLANTS Database Hitchcock rev Chase Manual of the grasses of the United States USDA Miscellaneous Publication No Washington DC Hitchcock rev Chase