|Isodon inflexus, a
perennial of 0.4-1m in height, occurs at the forest edges in fields
and mountains. Leaves are opposite, the margins coarsely serrated,
in the shape of a broad oval, each 3-6cm in length, the base
abruptly becoming narrow to follow the wing portion of the petioles.
Blue-purple flowers, 7-9mm in size, bloom in the slender spikes -
upper lips cleft in four, lower lips make the shape of a boat. Bloom