Spanish Clover; Pursh's Lotus
Lotus unifoliolatus (=L. purshianus)
Fabaceae

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Named for Fredrick Traugott Pursh;
Pursh catalogued and described many of the new plant species
brought back from the western wilderness by Lewis and Clark.

unifoliolatus - single leaf

The only lotus in the area with pink veins
Wide-spread throughout the R-Ranch