Hymenophyllaceae 



35 



1, Hymenophyllum barbatum (v. d. Bosch) Bak. H. 



japonicum Miq.; Leptocionium barbatum v. d. Bosch. 



KoYA-KOKE-SHiNOBU. Costas beneath, stipes, and rhizomes 

 with red-brown crisped rather coarse hairs especially while 

 young; rhizomes filiform, loosely branched, long-creeping; 

 fronds 3-pinnatiparted, 6-12 cm. long, ovate to broadly lanceo- 

 late; stipes scarcely thicker than the rhizomes, 2-5 cm. long, 

 wingless or with a very narrow deciduous wing on each side; 

 blades broadly to narrowly ovate, the sterile obtuse, the fertile 

 usually more or less elongate, 3-8 cm. long, 2-3 cm. wide; 

 pinnae ovate, once or sometimes twice pinnatiparted; ultimate 

 segments 1.2-1.7 mm. wide, rounded to obtuse at apex, spin- 

 ulose; sori usually in upper portion of blade; indusia about 1.2 

 mm. wide, broadly ovate, the valves disrincdy toothed on up- 



per margin. Honshu (Ugo Prov. and southw.), Shikoku, 



Kyushu. Korea (Quelpaert Isl.) and China. 



2. Hymenophyllum simonsianum Hook. Shimon- 

 KOKE-SHiNOBU. Plant slender, nearly glabrous; rhizomes 



filiform, creeping; stipes remote, slender, 1.5-4 cm. long; 

 fronds 2-pinnadparted; blades broadly lanceolate to linear-ob- 

 long, 4-10 cm. long, 15-25 mm. wide, often narrowed at tip, 

 the rachis winged; pinnae flabellate to rhombic-cuneate, shal- 

 lowly parted, the lobes elliptic, obtuse, spinulose-toothed; ulti- 

 mate segments 2-3 mm. wide; sori in upper part of blade; 



indusia oblong, the valves prominendy toothed on margin. 



Reported to occur in Kyushu (Yakushima) ; rare. Formosa 



to India. 



3. VANDENBOSCfflA Copel. Hai-horagoke Zoku 



Usually epiphytic, sometimes terrestrial with hairy elongate rhizomes; fronds pinnately compound, thin; ultimate segments 



1-veined, without false veinlets; indusia cylindric to cup-shaped, with an entire mouth, the receptacle slender, elongate. More 



than 25 species, mostiy tropical, but also in N. America, southernmost S. America, S. Africa, and Europe. 



lA. Blades lanceolate to narrowly so, subsessile or very short-stiped, simply pinnate 1. V. auriculata 



IB. Blades ovate to broadly lanceolate, long-stiped, bipinnatiparted. 



2A. Stipes distincdy winged at top; fronds 10-20 cm. long, the ultimate segments 0.5-0.7 mm. wide 2. V. radicans 



23. Stipes scarcely winged; fronds 1.5-4 cm. long, the ultimate segments 0.8-1 mm. wide 3. V. titibuensis 



1, Vandenboschia auriculata (Bl.) Copel. Tricho- wide, obtuse; indusia 1.2-1.5 mm. long, exserted, tubular, nar- 



manes atiriculatum Bl. Tsuru-horagoke. Rhizomes rowed at base, the mouth somewhat dilated and truncate. 



long-creeping, wiry, 1.5-2 mm. across, while young with Honshu (Awa, Izu Isls. and westw.), Shikoku, Kyushu; 



dark brown, lustrous, jointed, straight hairs 1.5-2 mm. long; rather common. Ryukyus and Formosa. 



fronds rather remote; blades lanceolate to narrowly so, 15-35 Var. nipponica (Nakai) H. Ito. Trichomanes nipponicum 



cm. long, 3-5 cm. wide, very short-stiped or subsessile, simply Nakai Hime-hai-horagoke. Rhizomes 0.2-0.5 mm. 



pinnate, the rachis with dark brown spreading hairs while across; fronds 5-10 cm. long; blades 3-8 cm. long. Hok- 



young, often bisulcate by virtue of the very narrow upturned kaido, Honshu, Kyushu. Korea (Quelpaert Isl). 



wings; pinnae many, rhombic-ovate, 15-30 mm. long, 6-13 Var. naseana (Christ) H. Ito. Trichomanes naseanum 



mm. wide, obtuse, broadly cuneate at base, auriculate on an- H. Chr. Ryukyu-kogane, O-hai-horagoke. Rhizomes 



terior side at base, the pinnules parallel, entire, irregularly 1-1.5 mm. across; fronds 20-40 cm. long; blades 15-30 cm. 



toothed at the truncate apex; veinlets ascending to suberect; long; indusia tubular, not distincdy constricted or dilated 



indusia exserted, about 1.7 mm. long, mbular, narrowed at above, 1.5-2 mm. long. Honshu (Izu and Kii Prov.), Kyu- 



base, truncate at apex. Tree trunks; Honshu (Izu Isls. and shu. Ryukyus and Formosa. The typical variety is pan- 



Kii Prov.), Shikoku, Kyushu. Ryukyus, Formosa, China to tropic. 



India, and Malaysia. 3. Vandenboschia titibuensis H. Ito. Chichibu-hora- 



2. Vandenboschia radicans (Sw.) Copel. var. orientaUs goke. Rhizomes long-creeping, 0.2-0.3 mm. across, with 

 (C. Chr.) H. Ito. Trichomanes orientate C. Chr.; T. japon- dark brown hairs, remotely leaved; fronds 1.5^ cm. long; 



ictim Fr. & Sav., non Thunb.; T. amabile Nakai Hai-hora- stipes 2-10 mm. long, scarcely winged; blades bi- or partially 



goke. Plant nearly glabrous; rhizomes slender, 0.5-1 mm. subtripinnatiparted, oblong-ovate, the rachis winged; pinnules 



across, with dark brown lustrous jointed hairs, remotely rather close or somewhat imbricate, linear, entire, subacute, 



leaved; fronds 10-20 cm. long; stipes 4-7 cm. long, winged; 0.8-1 mm. wide; indusia short, tubular-campanulate, entire, 



blades more or less 3-angled, narrowly ovate to broadly lanceo- dilated above, slightly recurved on margin, 2-winged nearly 



late, 8-15 cm. long, 3-6 cm. wide, the rachis narrowly winged; to the top, about 2 mm. long. Honshu (Kanto to Kinki 



pinnae bipinnatiparted; pinnules linear, usually 0.5-0.7 mm. Distr.), Shikoku, Kyushu; rare. 



4. GONOCORMUS v. d. Bosch Uchiwagoke Zoku 



Usually epiphytic, with freely branched filiform or capillary rhizomes sometimes proliferous; fronds very small, palmately lobcd 

 to parted, glabrous, with flabellate venation; false veinlets absent; indusia immersed, elongate with an entire dilated mouth; re- 

 ceptacle extruded. Seven species or perhaps more, Africa to Japan, Queensland to Hawaii. 



1. Gonocormus minutus (Bl.) v. d. Bosch. Tricho- rupted; stipes 1-2 cm. long, about as thick as the rhizomes, 



manes minuttim Bl.; T. parvulum sensu auct. Japon., non Poir. pale green, nearly glabrous on the upper half, densely dark 



Uchiwagoke. Plant very small; rhizomes capillary, brown hairy at base; blades flabellate, 5-12 mm. long, 7-15 



branched and intricate, dark brown villous; fronds inter- mm. wide, cordate to truncate, rarely broadly cuneate at base, 



