团扇蕨 tuan shan jue

Trichomanes minutum Blume, Enum. Pl. Javae 2: 223. 1828; Gonocormus australis Ching; G. matthewii (Christ) Ching; G. minutus (Blume) Bosch; G. prolifer (Blume) Prantl; T. matthewii Christ; T. proliferum Blume; T. saxifragoides C. Presl.

Plants up to 5 cm. Rhizome dark brown or black, filiform, 0.2-0.3 mm in diam., densely covered with reddish brown or dark brown short hairs, irregularly branching. Stipes remote, 3-12 mm apart, dark brown to dark green, filiform, 1-10 mm, densely hairy at base, subglabrous upward. Lamina flabellate or ovate, 1-2 × 0.5-1.5 cm, base cordate or cuneate; ultimate segments linear, 1.5-8 × 0.3-2 mm, margin entire, apex obtuse. Sori terminal on lobes; involucres funnelform or bottle-shaped, winged, dilated at mouth. 2n = 72, 108, 144.

On muddy rocks in forests and valleys, or wet rocks near streams, on moss-covered tree trunks, in tropical evergreen forests; near sea level to 1600 m (in Taiwan). Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang [Bhutan, Cambodia, NE India, Indonesia, Japan, Korea, Malaysia, Nepal, Philippines, Russia (Siberia), Sri Lanka, Thailand, Vietnam; Africa, Australia, Pacific islands (Melanesia, Micronesia, Polynesia)].