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FOC | Family List | FOC Vol. 2-3 | Dryopteridaceae | Polystichum

91. Polystichum saxicola Ching ex H. S. Kung & Li Bing Zhang, Acta Phytotax. Sin. 36: 250. 1998.

石生耳蕨 shi sheng er jue

Plants summer-green. Rhizome unknown. Fronds ca. 35 cm; stipe yellowish brown in lower part, ca. 18 cm, ca. 2 mm in diam. at base, scaly; scales ovate and linear, base of stipe covered with lanceolate scales, center of scales blackish brown, margins brown. Lamina bipinnatipartite, oblanceolate, ca. 34 × 8 cm, slightly contracted toward base, acuminate; rachis without proliferous bulbils, stramineous, both surfaces covered with linear scales, abaxially mixed with lanceolate scales. Pinnae 24 pairs, alternate, attached at right angles to rachis, shortly stalked, oblong-lanceolate, middle pairs 3.5-4 × ca. 2 cm, bases oblique and nearly truncate, auriculate acroscopically, pinnatipartite, apices obtuse or acute. Lobes 6 or 7 pairs, alternate, ascendant, obliquely oblong, 0.8-1 cm × 4-5 mm, bases obliquely cuneate and decurrent to costa forming narrow wings, apices rounded; auricles inconspicuous, serrulate, abaxially covered with filiform microscales, adaxially glabrous; frond texture papery; venation pinnate on lobes, indistinct on both surfaces. Sori in 1 row on each side of midrib of lobe; indusia present, incised.

● Alpine meadows, rock crevices; ca. 3100 m. Sichuan (Emei Shan).


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