is a perennial herb that inhabits rocks, which may submerge in water
when flooding along mountain streams. Stems arise from long
underground stems and grow to 10-30cm in height, with short downward
hairs. Leaves are in the shape of an ovate or triangular-ovate,
2-3.5cm long, with undulate serrations on margins and sparse hairs
on surfaces. Inflorescences of 3-5cm long set purple labiate flowers
with lower lips with no purple dots Bloom time: May-June.