Dryopteris nigricans

Dryopteris nigricans

(records of Tianmu Mountain, Zhejiang Province)

[source] it is the tender leaf of Dryopteris nigrescens.

[plant morphology] Dryopteris nigricans, also known as Parthenocissus macrophylla.

Perennial plants, 35-70 cm high. The rhizome is short and obliquely ascending, with large black bright scales ovate lanceolate at the base of petiole. Leaf clusters, petiole 10-30 cm long, except by brown large scales, up to the leaf axis and below the feather axis, densely covered with narrow lanceolate and inverted subulate scales; leaf blade lanceolate or broad lanceolate, thick papery, 25-50 cm long, 8-15 cm wide, 2-pinnate; middle pinnate 4-7 cm long, falcate lanceolate; small pinnate falcate triangular or oblique rhombic, above the base Lateral broad and triangular convex, lower cuneate, margin undivided, teeth with awn spines; veins pinnately branched. Sporangia are small, at the top of branching veins; sporangia are shield shaped, caducous.

He was born under the mountain forest. It is distributed in Yunnan, Gansu, Fujian and the Yangtze River Basin.

[function indications] for lower limb furuncle: fresh leaves of Dryopteris nigricans, remove scales and hairs, mash them, add proper amount of sugar, mix and apply them to the affected area, change them once a day; avoid eating sour and spicy food.