庐山石韦 lu shan shi wei

Polypodium sheareri Baker, J. Bot. 13: 201. 1875; Cyclophorus drakeanus (Franchet) C. Christensen f. maximus Y. C. Wu; C. grandissimus Hayata; C. inaequalis (Christ) C. Christensen; C. sheareri (Baker) C. Christensen; C. sheareri f. maxima (Y. C. Wu) C. Christensen; Niphobolus inaequalis Christ; N. sheareri (Baker) Diels; Pyrrosia grandissima (Hayata) Ching; P. nanchuanensis Ching.

Plants 20-50 cm tall. Rhizome short (rarely shortly elongated), 2.4-7 mm in diam., in cross section with many scattered sclerenchyma strands; phyllopodia contiguous, rarely ca. 0.5 cm apart, lateral buds basal on phyllopodia. Scales dull brown to blackish, pseudopeltate, 2.7-4.7 × 0.7-1.2 mm, ciliate. Fronds monomorphic, stipitate; stipe 3.5-5 cm; lamina widest near base, 10-30 × 2.5-6 cm, base cordate-truncate to ± cuneate, often unequal, apex acuminate. Hydathodes distinct, distinctly sunken. Indument persistent, monomorphic, dense, brown to grayish brown; hairs 0.3-0.5(-1) mm in diam., with appressed, boat-shaped rays. Sori superficial, without central bundle of paraphyses. Sporangia on stalks to 0.5 × as long as capsule.

On tree trunks or rocks in forests beside streams; near sea level to 2500 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang [Vietnam].