毛叶耳蕨 mao ye er jue

Polystichum mediocre Ching & S. K. Wu; P. mollissimum var. laciniatum H. S. Kung & Li Bing Zhang.

Plants summer-green. Rhizome erect, densely covered with lanceolate brown scales. Fronds 8-20 cm; stipe stramineous, 2-8 cm, ca. 2 mm in diam. at base, lower part persistent, densely scaly; scales yellowish brown or brown, lanceolate and linear. Lamina bipinnatifid, lanceolate, 7-18 × 1.5-3.5 cm, slightly contracted toward base, acuminate; rachis without proliferous bulbils, stramineous, both surfaces densely covered with linear scales. Pinnae 11-24 pairs, alternate, slightly ascendant or attached at right angles to rachis, sessile, lanceolate, middle pairs 0.8-2 cm × 4-8 mm, bases obliquely broadly cuneate, auriculate acroscopically, pinnatipartite nearly to pinna rachis, apices acute. Lobes 3-6 pairs, nearly opposite, slightly ascendant, obliquely oblong, 1-3 × 0.5-1.5 cm, with forward-pointing teeth, acute; both surfaces covered with filiform microscales, microscales on abaxial surface denser; frond texture thinly papery; venation pinnate on lobes, indistinct on both surfaces. Sori in 1 row on each side of costa or midrib of lobe; indusia present, obtusely toothed.

● Alpine shrubs, dark coniferous forests, alpine meadows; 2600-3700 m. E Gansu (Xinglong Shan), Hebei (Xiaowutai Shan), Nei Mongol (Daqing Shan), Qinghai (Dongdu), Shaanxi (Taibai Shan), Shanxi (Huoxian, Ningwu), W Sichuan, Xizang (Banbar, Bomi), NW Yunnan.