云南贯众 yun nan guan zhong

Cyrtomium longipes Ching & K. H. Shing; C. spectabile Ching.

Plants up to 1 m tall. Rhizome not seen. Stipe stramineous, 40-55 cm, 3-5 mm in diam. at base, lower portion densely scaly; scales brown, ovate or lanceolate, margins toothed. Lamina oblong or oblong-lanceolate, 25-50 × 15-25 cm, base slightly contracted, 1-imparipinnate, apex obtuse; rachis glabrous. Lateral pinnae 4-6 pairs, alternate, slightly ascendant, shortly stalked, lanceolate, falcate; middle pinnae 10-18 × 2.2-4 cm, base rounded-cuneate or broadly cuneate, serrulate, acroscopic margins ± decurrent to pinna stipe, apex acuminate; terminal pinna ovate, forked, 8-11 × 3-6 cm; hard papery, glabrous on both surfaces; venation pinnate, indistinct on both surfaces, veinlets anastomosing to form 5 or 6 rows of areoles. Sori throughout abaxial surface of pinnae; indusia margins entire.

● Forests; 1600-3000 m. C and S Yunnan.

The name Cyrtomium longipes was sunk into synonymy of C. nervosum Ching & K. H. Shing in FRPS (5(2): 214. 2001). Following Matsumoto et al. (J. Plant Res. Suppl. 119: 57. 2006), it is conspecific with C. yunnanense.

Cyrtomium yunnanense is an apomictic triploid.