United States, Massachusetts, Hampden, Russell: east bound lane of Route 90, southeast of Route 23, vertical ledges of roadcut. Woronoco USGS Quadrangle.
Schist ledges wet from seepage, partly shaded. With Lythrum salicaria, Rubus odoratus, Solidago uliginosa, Salix discolor, Fragaria virginiana, Ludwigia palustris.