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Palafoxia callosa (Nutt.) Torr. & A. Gray is a critically imperiled plant that has an extremely restricted distribution in Oklahoma with all previous observations recorded from Caddo and Pontotoc Counties. Here we report the first observations of P. callosa in Washita County, Oklahoma. Considering the restricted distribution and limited information available on P. callosa in Oklahoma, additional surveys are needed to assess the population status and current threats to the conservation of this species.
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Journal compilation (c) Oklahoma Native Plant Society
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