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

19. Cyrtomium taiwanianum Tagawa, Acta Phytotax. Geobot. 7(2): 78. 1938.

台湾贯众 tai wan guan zhong

Polystichum taiwanianum (Tagawa) C. M. Kuo ["taiwanense"].

Rhizome not seen. Stipe stramineous, ca. 25 cm, sparsely scaly; scales brown, lanceolate or filiform, margins subentire. Lamina oblong, ca. 30 × 15 cm, 1-imparipinnate; rachis with sparse filiform scales. Lateral pinnae 6 or 7 pairs, alternate, slightly ascendant, shortly stalked, oblong-lanceolate, lower pinnae 12-15 × 2.5-3 cm, base broadly cuneate to cuneate, margins serrulate, apex acuminate; terminal pinna oblong, ca. 10 cm, unlobed; papery; venation distinct abaxially, veinlets anastomosing to form ca. 5 rows of areoles. Sori in 5 or 6 irregular rows; indusia raised on center, margins entire.

● Forests; (800-)1400-1900 m. Taiwan.

Cyrtomium taiwanianum is a sexual species. The epithet has sometimes been corrected to "taiwanense," but the original epithet "taiwanianum" is not incorrect.


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