广西长筒蕨 guang xi chang tong jue

Trichomanes siamense Christ, Bot. Tidsskr. 24: 103. 1901; Cephalomanes obscurum var. siamense (Christ) K. Iwatsuki;

Plants 10-12 cm tall. Rhizome creeping, densely covered with short reddish brown hairs. Stipe light brown, 4-6 cm. Rachis dark brown, glabrous, winged throughout. Lamina tripinnatifid, 4-6 × 2-2.5 cm; pinnae oblong-ovate, 1-2 cm × 8-10 mm; pinnules oblong or subovate, apex rounded. Involucres with slightly dilated mouth.

On wet rocks near streams in dense forests; 900-1200 m. Guangdong, Guangxi, Hainan [Japan, Thailand, Vietnam].