雉尾烏毛蕨

Blechnidium melanopus ( Hook.) Moore, Ferns Gr. Brit. Nat. Pr. oct. ed 2. 210. 1860; Tagawa in Journ. Jap. Bot. 12: 541. 1936; H. lto, Fil. Jap. 111. pl. 102. 1944. Spicanta melanopus ( Hook.) O. Kze., Rev. Gen.Pl. 2: 821. 1891. Blechnum plagiogyriifrons Hayata, lc. Pl. Form. 6: 157. pl. 20.1916. Blechnidium plagiogyriifrons ( Hayata) Hayata in Bot. Mag. Tokyo 40: 704. 1927; Masamune, Short Fl. Form. 8. 1936.

Rhizome creeping; scales abundant, dark brown, lanceolate, entire; c. s. with 2 large bundles and 4 smaller ones. Stipes distant, about as long as lamina, persistent, dark brown, sparingly scaly at base, grooved above, 15-30 cm; c. s. oval with 2 bundles connected by sclerenchyma tissue; fronds pinnate, glabrous, subcoriaceous; pinnae adnate, usually falcate, margins entire, median pairs longest, usually 3-5 cm long, lower 3 pairs very much shortened (0.5-2 cm long); venation hidden, with costal areoles, ultimate veinlets free, often forking. Sori costal continuous, not reching apex of pinnae and not quite reaching base; indusia brown, opening towards costa.

TAIPEI: Kankou, Simozawa s. n. 1932. ILAN: Taipingshan, Suzuki 1017. HSINCHU: Yuanyang Lake, Kuo 1523. TAOYUAN: Peichatienshan, Kuo 2621*.TAICHUNG: Pahsienshan, Chuang, Kuo & Kao 2759. CHIAYI: Mt. Alishan, Sasaki 550. TAITUNG: Kuehu, Kuo 106. HUALIEN: Tarokotaisan, Sasaki s. n. 1933.

Distributed in W. China, India and Taiwan. Growing on wet shaded places in middle altitude mountains.