Lycopus uniflorus, a
perennial herb that extends slender rhizomes, inhabits wetlands in
mountainous areas; stems grow to 20-40cm in height, with fine hairs
all through. Leaves are of opposite phyllotaxis, in the shape of a
long oblong-like lanceolate, 2-7cm in length, with obtuse serrations
on margins. Axils densely set small white labiate flowers, some
numbers each; corollas measure as large as two millimeters in
length. Bloom time: August-September.