Mazus rugosus Lour.

Oregon: Multnomah County: Kenton, Portland.
45.52361° N, 122.675° W
Coordinate Source: Estimated.
Borders of estival-receding ponds and sloughs. Fairly com. Nat. from Asia. Herbarium of Charles Vancouver Piper.

M. W. Gorman 3700, Oct 28, 1915
WS, Accession: 102902