17. Parathelypteris caoshanensis Ching ex K. H. Shing, Fl. Reipubl. Popularis Sin. 4(1): 50, 321. 1999.
草山金星蕨 cao shan jin xing jue
Plants ca. 38 cm tall. Rhizomes erect, black, short. Fronds clustered; stipes 14-18 cm, bases dark brown, with dense spreading acicular long hairs and few lanceolate scales, distally castaneous red and to rachises with dense unicellular short acicular hairs; laminae 20-22 × ca. 9 cm, nearly tapering to bases, pinnate-pinnatifid, apices acuminate and pinnatifid; pinnae 11-15 pairs, alternate (proximal ones subopposite), oblique distally, shortly stalked, proximal pair shortened or slightly shortened; middle ones lanceolate, ca. 6 × 1 cm, bases rounded-truncate, symmetrical, pinnatifid nearly to costae, apices acuminate; segments ca. 18 pairs, ones below middle oblong, ca. 5 × 2.5 mm, entire along margins, rounded at apices. Veins evident, lateral veins simple, ca. 6 pairs per segment, proximal pair arising from near base of costules. Laminae herbaceous, dark brown when dry, abaxially with spreading short acicular hairs throughout and including veins with reddish purple spherical glands, adaxially with spreading hairs throughout. Sori orbicular, dorsifixed slightly above bases of lateral veins; indusia medium-sized, orbicular-reniform, brown, thinly herbaceous, separated from each other, sparsely pubescent, persistent.
● Wet soil of valley forests. Taiwan (Caoshan, Taibei).
On one page of the protologue (appendix, p. 321), the name is cited as "Cyclosorus" caoshanensis, but this is obviously a typographical error. It appears under the generic heading Parathelypteris with six other species of Parathelypteris, whereas numerous species of Cyclosorus appear later (pp. 331-350); it is not included in the index under Cyclosorus (p. 364); and the name appears as P. caoshanensis in the synopsis (p. ii), key (p. 32), main text (p. 50), and index (p. 377).