金鸡脚假瘤蕨 jin ji jiao jia liu jue

Polypodium hastatum Thunberg in Murray, Syst. Veg., ed. 14, 935. 1784; Crypsinus hastata (Thunberg) Copeland; Drynaria hastata (Thunberg) Fée; Phymatodes hastata (Thunberg) Ching; Phymatopsis chenkouensis Ching; P. hastata (Thunberg) Kitagawa ex H. Itô; P. hastata f. arenaria (Baker) Ching; P. hastata f. dolichopoda (Diels) Ching; P. hastata f. nikkoensis (Christ ex Matsumura) H. Itô; P. hastata f. pygmaea (Maximowicz) H. Itô; P. hastata var. pygmaea (Maximowicz) Li & J. Z. Wang; P. hastata f. simplex (Christ) Ching; P. hunyaensis Ching; P. rotunda Ching; P. shandongensis J. X. Li & C. Y. Wang; P. similis Ching; P. simplicifolia Ching; P. tarningensis Ching; Phymatopteris chenkouensis (Ching) Pichi Sermolli; P. hastata (Thunberg) Pichi Sermolli; P. hunyaensis (Ching) Pichi Sermolli; P. rotunda (Ching) Pichi Sermolli; P. simplicifolia (Ching) Pichi Sermolli; Pleopeltis hastata (Thunberg) T. Moore; Polypodium arenarium Baker; P. dolichopodum Diels; P. hastatum var. dolichopodum (Diels) C. Christensen; P. hastatum var. nikkoense Christ ex Matsumura; P. hastatum f. pygmaeum Maximowicz; P. hastatum var. simplex Christ.

Rhizome 2-3 mm in diam., densely scaly throughout; scales reddish brown, lanceolate, ca. 5 mm, broad at peltate base, margin entire or sometimes sparsely toothed, apex long acuminate. Fronds monomorphic. Stipe straw-colored, 2-20 cm, 1-2 mm in diam., glabrous; lamina hastate or simple; simple lamina: ovate to linear or lanceolate, 2-20 × 1-2 cm, base cuneate or rounded, margin notched, apex acute or obtuse; hastate lamina: with 1 or 2 basal lateral lobes, sometimes one much longer than other, all lobes widest at base, apices acuminate. Costa and lateral veins distinct, veinlets obscure. Lamina papery or herbaceous, both surfaces glabrous, abaxial surface usually somewhat glaucous. Sori orbicular, large, 2-3 mm in diam., medial, superficial.

Terrestrial along paths on slopes, also on moss-covered rocks, common; near sea level to 800(-1200) m (in Taiwan). Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Japan, Korea, Philippines, Russia].

Small plants may become precociously fertile before they have developed the characteristic basal lamina lobes. Such plants have been described several times as distinct taxa.