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

101. Dryopteris ryo-itoana Kurata, J. Geobot. 15: 84. 1967.

阔羽鳞毛蕨 kuo yu lin mao jue

Dryopteris dispar Ching & C. F. Zhang; D. kaihuaensis Ching & C. F. Zhang; D. lungshanensis Ching & P. S. Chiu; D. lushanensis Ching & P. S. Chiu; D. pseudofuscipes Ching & P. S. Chiu; D. triangularifrons Ching.

Rhizome ascending. Fronds caespitose. Stipes dark or castaneous, ca. 30 cm, with lanceolate, dark brown, entire scales at base; upper part of stipe with sparse, smaller, light brown scales. Lamina deltoid-ovate, widest at base, 30-40 × 20-30 cm, bipinnate. Pinnae 10-12 pairs, subopposite; basal pair largest, 15-20 × 7-10 cm. Pinnules 7-10 pairs, lanceolate, pinnatifid or pinnatipartite; basiscopic pinnules on basal pinnae longer and larger than rest, 5-6 × 1.5-2 cm, proximally oblique, Segments obtuse with few acute teeth. Rachis and base of pinna rachises covered with lanceolate, light brown scales, abaxial surface of pinna rachis with sparse, light brown bullate scales. Costa grooved adaxially. Veins pinnate; veinlets simple or forked, obscure abaxially. Lamina herbaceous, yellowish green, glabrous adaxially, sparsely scaly abaxially. Sori in 1 row on either side of costa, slightly near a costa, indusiate; indusia reniform, entire. n = 123.

Subtropical broad-leaved evergreen forests. Jiangxi, Zhejiang [Japan].


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