Yeso Formation

U.S. Fish and Wildlife Service. 2005. Draft 5-Year Review for the Gypsum Wild Buckwheat (Eriogonum gypsophilum). 21 p.

• black river
• Seven Rivers
• Polygonaceae
• gypsum wild buckwheat
• Eriogonum gypsophilum
• Gypsum
• Yeso Formation
• Ben Slaughter Draw