11. Crepidomanes thysanostomum (Makino) Ebihara & K. Iwatsuki, Blumea. 51: 240. 2006.
球杆毛蕨 qiu gan mao jue
Trichomanes thysanostomum Makino, Bot. Mag. (Tokyo) 13: 46. 1899; Cephalomanes thysanostomum (Makino) K. Iwatsuki; Nesopteris thysanostoma (Makino) Copeland.
Plants 30-40 cm tall. Rhizome ca. 5 mm in diam.; hairs brown, multicellular, ca. 3 mm; rootlets wiry, blackish, rather thick. Stipe fuscous, columnar, 6-16 cm × 1-1.5 mm, firm, narrowly winged, with multicellular hairs at base; hairs dense, dark brown. Lamina ovate, 10-30 × 5-15 cm, base subcordate, apex acuminate; pinnae 10-12 pairs, closely spaced, somewhat imbricate to neighboring ones, alternate, ovate-oblong, 4-8 × 1.5-3 cm, oblique, apex acuminate; basal ones usually somewhat shortened; pinnules 8-10 pairs, closely spaced, alternate, spreading, subdeltoid-ovate, 1-2.5 × 1-1.5 cm, base unequally cuneate, apex obtuse; ultimate segments closely spaced, 0.3-0.5 mm wide, with a single veinlet, apex obtuse, straight or somewhat curved. Veins dichotomous, obviously raised on each surface, brown; lobes not constricted below base of involucres; mouth truncate, not dilated, ciliate; receptacles long projecting, brown, straight, up to 1 cm. 2n = 108, triploid.
On wet shaded rocks or cliffs; 300-400 m. S and SE Taiwan [Japan (Ryukyu Islands), Philippines].