Grey Guanzhong

Grey Guanzhong

(Hunan medical records)

Centipede grass.

[source] it is the whole plant of Dryopteridaceae.

[plant morphology] Pteris opposite

Perennial herbs, 20-90 cm high. Rhizome erect, with dense lanceolate scales at the base of petiole. The leaf blade is lanceolate, papery, 15-25 cm long, 2.5-3.5 cm wide in the middle, almost invariable and narrow in the base, nearly smooth, once pinnate; the middle pinnate is 1.2-1.8 cm long (a pair of base is slightly short), 6-8 mm wide in the base, obliquely oblong or rhombohedral triangular, acute and with a convex tip, and the upper side of the base is slightly shorter Broad, triangular, convex, incised below, margin triangular acutely serrate; veins pinnately branched. Sporangia are found at the top of venules, usually arranged in a row only on the upper side of the main vein (sometimes 1-3 on the upper side of the lower side); sporangia are shield shaped and somewhat serrated.

In the crevice of raw limestone. It is distributed in Yunnan, Sichuan, Hunan, Hubei, Anhui, Guangdong and Taiwan.

[collection] harvest in summer and autumn, dry or fresh.

[flavor] sour and astringent, slightly cold.

Function indications: promoting blood circulation, relieving pain, detumescence and diuresis.

[usage and dosage] oral administration: decoction, 0.5-1 Liang. External use: tamping or removing after grinding.

[prescription selection] 1. Prevention of cold: five coins for the raw ear fern, fried in water as tea.

② Treatment of traumatic injury: on the health ear fern, Verbena, crushed, apply the affected area.

③ Apply a little garlic to the injured part, and then apply it to the affected part.