on muddy rocks at edge of stream
oil bodies mostly absent from epidermis, 1-2 per cell in hypodermis.
on rocks overhanging shallow stream
On muddy rocks at edge of stream in mature mixedwood forest. Leaf marginal cells small and thick-walled; median leaf cells 12-24 um on longest axis. Leaves irregularly toothed at apex. Shoots 1-2 cm in length.