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

20. Cyrtomium latifalcatum S. K. Wu & Mitsuta, Acta Phytotax. Geobot. 36(1-3): 22. 1985.

宽镰贯众 kuan lian guan zhong

Plants 20-30 cm tall. Rhizome erect, densely covered with lanceolate brown scales. Stipe stramineous, 10-12 cm, 2-3 mm in diam. at base, lower portion densely scaly; scales brown or blackish brown, ovate or lanceolate, margins dentate. Lamina broadly lanceolate, 17-22 × 6-9 cm, base slightly contracted, 1-imparipinnate, apex acute; rachis with linear brown scales or glabrous. Lateral pinnae 5-8 pairs, alternate, nearly spreading, shortly stalked, ovate, rarely broadly lanceolate; middle pinnae 4.5-5.5 × 2-3 cm, base oblique, acroscopic margins subtruncate, basiscopic margins rounded-cuneate, margins with inconspicuous small blunt teeth, apex acuminate; terminal pinna broadly ovate, lower portion forked or trifurcate, 6-7 × 3-5 cm; papery, glabrous on both surfaces; venation pinnate, slightly raised abaxially, indistinct adaxially, veinlets anastomosing to form 3 or 4 rows of areoles. Sori throughout abaxial surface of pinnae; indusia not seen.

● Broad-leaved evergreen forests; ca. 600 m. Yunnan (Xishuangbanna).

Cyrtomium latifalcatum is a sexual species.


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