Rice Paddy Herb is an annual or perennial herb with
stems 1-2 ft, simple to much branched, hairless or glandular, base
prostrate and rooting from nodes. Flowers are white, blue-purple, or
pink, 1-1.3 cm, sparsely and finely glandular, inside white hairy.
Sepal-cup is 4-6 mm, hairless or glandular velvet-hairy, with raised
veins in fruit. Style tip dilated; stigma short, 2-lamellate. Flowers
arise singly in leaf axils or in racemes at branch-ends or in
leaf-axils. Flower-stalks are 0.5-2 cm, hairless or glandular.
Bracteoles are linear to linear-lanceshaped, 1.5-2 mm. Leaves are
opposite or in whorls of 3, stalkless, ovate-lanceshaped to
lanceshaped-elliptic, 1-5 x 0.3-1.5 cm, base semi-stem-clasping, margin
rounded toothed and sawtoothed; veins pinnate. Capsules are ovoid,
about 6 mm. Rice paddy herb is one of the many culinary herbs used only
or predominantly in Vietnamese cuisine.The flavour of rice paddy herb
goes well with mild Vietnamese curries, like chicken curry. Around
reservoirs and other moist places. Rice Paddy Herb is found at low
elevations in NE India, Bhutan, China, Taiwan, Japan, Korea, SE Asia
and Australia. Flowering: March-December.