秦岭贯众 qin ling guan zhong

Cyrtomium megaphyllum Ching & K. H. Shing; C. moupinense Ching & K. H. Shing.

Plants 40-80 cm tall. Rhizome erect, densely covered with lanceolate brown scales. Stipe stramineous, 18-36 cm, 3-4 mm in diam. at base, lower portion densely scaly; scales dark brown, ovate or lanceolate, margins toothed, often twisted. Lamina oblong or oblong-lanceolate, 30-60 × 15-26 cm, base not contracted or slightly wider middle pinnae, 1-imparipinnate, apex obtuse; rachis covered with lanceolate to linear brown scales. Lateral pinnae 5-7 pairs, alternate, slightly ascendant, shortly stalked, basal 1 or 2 pairs ovate and often larger, others oblong-lanceolate; middle pinnae 11-20 × 3.5-5 cm, base broadly cuneate or rounded-cuneate, serrulate, acroscopic margins slightly auriculate, apex acuminate or acute and caudate; terminal pinna broadly obovate, forked or trifurcate, 9-15 × 6-9 cm; hard papery, abaxially with lanceolate brown microscales, glabrous adaxially; venation pinnate, slightly raised on both surfaces, veinlets anastomosing to form multiple rows of areoles. Sori throughout abaxial surface of pinnae; indusia margins entire.

● Broad-leaved forests, Abies forests; 500-2400 m. Gansu (Kangxian), Guangxi (Longlin), Guizhou (Fanjing Shan), Shaanxi (Foping), Sichuan (Baoxing, Emei), Yunnan.

Cyrtomium tsinglingense is an apomictic species.