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Coptis
japonica var. major, a perennial herb approximately 20cm
in height, occurs in damp areas in fields and mountains of hilly
districts. Rhizomes are thick and extend long. With long
pedicles, leaves are radical, dense, glossy, and have a
biternate compound leaf surface. Leaflets measure 1.5-5 cm long
and 1-3 cm wide, with coarsely indented or shallowly pinnately
cleft margins. Dioecious: Male flowers have stamens, and female
flowers have pistils. The white flowers measure about 1cm
across, and the sepals are 5-7 in number, and the petals are
8-10. Bloom time: March-April.
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