1015cm tall annual occurs in somewhat damp places like paths between
paddies or the like. Leaves are in an alternate arrangement, 1.5-3cm
long and 0.5-1.2cm wide, in the shape of an orbicular-ovate or
oblong, with no petioles, entire margins, and 3-5 conspicuous
parallel veins. Flowers, light red-purple, singly set themselves on
axils; corollas are labiate, about 6mm long, and calyxes are deeply
cut into five, and the lobes are linear-like lanceolate-shaped.
Bloom time: August-October.