[source] it is the rhizome with petiole base of nelumbinidae.
[plant morphology] Dryopteris fortunei
The plant is short and thin, about 70 cm high. Petiole about 30 cm long, about 1 cm thick, leaf about 40 cm long, 2-pinnate, composed of 3-4 pinnae; pinnae alternate, broadly oblanceolate, 40 cm long, 12 cm wide above the middle, gradually narrowed to the lower part, 3.5-4 cm wide at the base, 1 cm long at the stalk, with narrow wings at the axial tip of the feather; pinnules about 25 pairs, alternate, spreading, almost sessile, slanting upward toward the upper part, with a distance of 1.5-4 cm About 1.5 cm, the base is the smallest, only 1.7-2 cm long, long ovate, short acuminate, 4 cm long in the middle, near caudate acuminate, 9 cm long and 1.5 cm wide at the top, lanceolate, long acuminate, near rounded at the base, a pair of near opposite at the top, with triangular obtuse saw teeth at the edge. Leaf veins few spreading, slender, forked and single to each other, curved toward top, reversed, pseudoveins distinct. The leaves are thin grass with no scales below. The sporangia are very small and oblong.
It is distributed in the south of Zhejiang Province.
[collection] it can be harvested all year round; the rhizomes are dug, the petioles are removed, and the slices are dried in the sun.
[herbal medicine] the dried rhizome has been cut into two pieces, long oval, slightly twisted, about 7-10 cm long, about 4-5 cm in diameter; the top has petiole residues, which show concave scars after removal; most golden villi can be seen at the junction of stem base, with many traces of microtubule bundles; the surface is dark brown, wrinkled, and scattered with sparse root marks; it is hard and light, and is not easy to break. The air is slightly fragrant and the taste is slightly bitter. It is better to be big, solid and light.
[flavor] slightly bitter and cool.
[function indications] soothe the mind and unblock the meridians. Treatment of neurasthenia, schizophrenia, fever, convulsions, arthralgia, coronary heart disease.
[usage and dosage] oral administration: decoction, 0.5-1 Liang (fresh 1-2 Liang); or stew oral.
(1) for neurasthenia, palpitation, insomnia, dreaminess and memory loss: xiandingxin powder for one or two. Take it in water.
② Treatment of schizophrenia: one to two liang of Dingxin powder, one pig heart or two liang of lean pork. Cook together and take with rock sugar for three to five times.
③ Treatment of coronary heart disease: Xian Ding Xin San Liang. Take it in water.
④ Treatment of icteric hepatitis: Dingxin powder, Paris polyphylla, Sanyeqing, etc. Take it in water.
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