ASPIDIACEAE 



81 



kino) Ohwi. A. o\uboanum Makino; Dryopieris o\uboana 

 (Makino) Koidz.; A. viridijrons forma o^tiboanum (Ma- 

 kino) Makino; Lunathyrium unijtircatum var. ol{tiboanum 

 (Makino) Kurata; Athyrium henryi auct. Japon., non Diels 



O-HiME-wARABi. Rhizomcs creeping; stipes light green, 



30-50 cm. long, with deciduous scales; scales membranous, 

 linear to broadly lanceolate, 3-10 mm. long, about 2 mm. 

 wide, entire, unequal, fuscous-brown; blades thinly herbaceous 

 to membranous, deltoid-ovate, or sometimes oblong-ovate, 

 40-80 cm. long, 25-50 cm. wide, acuminate, to bipinnatiparted 

 to bipinnate, green, the rachis sometimes with minute dark 

 brown scales; pinnae 7-10 pairs, opposite to alternate, oblong- 

 ovate, 20-40 cm. long, subsessile, the lower pinnae often short- 

 petiolulate with a pair of smaller pinnules at base, the costas 

 on both sides with some hairlike scales, the rachis winged; 

 pinnules broadly lanceolate to oblong, i-6 cm. long, 1-1.5 cm. 

 wide, acuminate to obtuse, usually broadly adnate at base to 

 the rachis, crenate-toothed or pinnately lobed to cleft; sori 10- 

 20, rounded; indusia reniform or sometimes hamate-oblong, 



about 0.5 mm. wide, erose-dentate. Woods; Honshu, Shi- 



koku, Kyushu. 

 Var. viridifrons. Dryoathyrittm viridijrons (Makino) 



Ching; Lunathyrium viridijrons (Makino) Kurata Midori- 



WARABi. Blades more finely cut, bipinnate-pinnatifid, the 

 pinnules with a broad costular wing. Honshu (Kanto to 



Kinki Distr.), Shikoku, Kyushu; rare. Korea (Quelpaert 



Isl.) and centr. China. 



6. Athyrium unifurcatum (Bak.) C. Chr. Nephrodium 

 unijurcatum Bak.; Dryopteris unijurcata (Bak.) C. Chr.; D. 

 tosensis Kodama; Lunathyrium unijurcatum (Bak.) Kurata; 



Dryoathyrium unijurcatum (Bak.) Ching O-hime-warabi- 



MODOKi. Rhizomes creeping, naked; stipes light brown to 

 pale green, 20-^0 cm. long, rather sparsely scaly in upper part 

 while young, naked at base; scales narrowly lanceolate to 

 linear, 2-5 mm. long, black-brown, slightly lustrous, suben- 

 tire, the scales on rachis often smaller; blades herbaceous, del- 

 toid- to oblong-ovate, 40-60 cm. long, 25-35 cm. wide, 

 acuminate, pale- to yellow-green when dried, pinnate; pinnae 

 7-9 pairs, alternate to subopposite, lanceolate, 3-5 cm. wide, 

 gradually acuminate, sessile, sometimes with sparse hairlike 

 scales on the costas on both sides, pinnately parted to cleft, 

 the upper ones gradually smaller; pinnules oblong, subacute 

 to rounded, ascending to spreading, obsoletely crenate-toothed, 

 sometimes lobulate; sori rounded, 5-12 on each pinnule; in- 

 dusia reniform to arcuate-oblong, about 0.5 mm. across, gray- 

 brown, erose-denticulate. Honshu, Shikoku, Kyushu. 



Formosa, s. China, and Indochina. 



7. Athyrium atkinsonii Bedd. Asplenium atkjnsonii 

 (Bedd.) C. B. Clarke; Aspidium senanense Fr. & Sav.; Dryo- 

 pteris senanensis (Fr. & Sav.) C. Chr.; Athyrium senanense 

 (Fr. & Sav.) Koidz. & Tagawa; Athyrium microsorum Ma- 

 kino Tebako-warabi, Miyama-6-inu-warabi. Fronds 



large, glabrous, vivid green; stipes pale brown, rather stout, 

 glabrous, sparsely scaly at base; scales thinly membranous, un- 

 equal, lanceolate to linear-lanceolate, 5-10 mm. long, entire, 

 pale brown, deciduous; blades thinly herbaceous, broadly 

 ovate or deltoid-ovate, 70-100 cm. long, tripinnate to tripin- 

 nate-pinnatifid, glabrous; pinnae ovate, 20-40 cm. long, 10-20 

 cm. wide, acuminate, petiolulate; ultimate pinnules rather un- 

 equal, oblong, 8-25 mm. long, 5-15 mm. wide, obtuse, broadly 

 cuneate at base, often short-petiolulate, pinnatiparted to lobed; 



sori rounded, 2-4 on each side along the costules; indusia 

 minute, membranous, reniform to short-lanceolate, pale gray- 

 brown, erose, 0.5-0.7 mm. long. Woods; Honshu (centr. 



distr. and Tango Prov.), Shikoku, Kyushu; rather rare. 



Formosa, China, and the Himalayas. 



8. Athyrium pinfaense (Ching) Ohwi. Diplazium pin- 



jaense Ching Fukuregi-shida. Rhizomes short, erect; 



fronds 4 or 5 in a tuft; stipes slender, to 17 cm. long, 2 mm. 

 across, stramineous, sparsely scaly at base, smooth above; 

 scales membranous, ovate-oblong, about 2 mm. long, acumi- 

 nate, entire, brown; blades ovate, 20-26 cm. long, to 16 cm. 

 wide, simply pinnate, the rachis slightly flexuous; pinnae thinly 

 herbaceous, 2 or 3 pairs, rarely 1 pair, alike, oblong-lanceolate, 

 10-14 cm. long, 3-3.5 cm. wide, acuminate, rounded to 

 rounded-cuneate at base, regularly aristate-toothed, glabrous 

 on both sides, the petiolules to 6 mm. long; veinlets forked, 

 slender, extending to the teeth, the anterior branch soriferous; 

 sori 1-1.6 cm. long, arising near the base of the branch, not 

 reaching the margin; indusia membranous, grayish while 



young, brownish with age. Kyushu (Fukuregi in Ama- 



kusa Isl. in Higo Prov.) ; very rare. s. China. 



9. Athyrium aphanoneuron (Ohwi) Ohwi. Diplaz- 

 ium aphanoneuron Ohwi; D. donianum sensu auct. Japon., 



non Tard.-Bl.; D. bantamense sensu auct. Japon., non Bl. 



Atsuba-kinobori-shida. Rhizomes short-creeping, rather 



stout; fronds about 60 cm. long, glabrous; stipes 30-40 cm. 

 long, about 3 mm. across, terete, with two deep grooves in 

 upper part, very sparsely scaly in upper part, those at base 

 broadly linear, 4-5 mm. long, acuminate, spinulose, black- 

 brown; blades ovate, pinnate, the rachis 10-15 cm. long; 

 pinnae 5-7, alternate, except for the lowest pair, firmly 

 herbaceous, broadly lanceolate to narrowly oblong, 15-18 cm. 

 long, 3-4.5 cm. wide, acuminate, acute, slightly unequal at 

 base, nearly entire except for a few teeth near tip, slightly re- 

 curved on margin, the petiolules of the lateral pinnae 2-10 

 mm. long, the terminal one 15-30 mm. long; costa prominent 

 especially beneath; sori usually double (diplazioid), linear; 

 indusia unequal, usually about 20 mm. long, erose and cilio- 



late. Kyushu (Yakushima and Tanegashima) ; rare. 



Ryukyus, China, and Tonkin. 



10. Athyrium dubium (G. Don) Ohwi. Asplenium 

 lanceum Thunb.; Diplazium lanceum (Thunb.) Presl, non 

 Bory; Athyrium lanceum (Thunb.) Milde, non Moore; Scolo- 

 pendrium dubium G. Don; Asplenium subsinuatum Wall, ex 



Hook & Grev.; Diplazium subsinuatum (Wall.) Tagawa 



Hera-shida. Rhizomes slender, long-creeping, about 2 mm. 

 across, remotely leafy, while young with black-brown linear 

 entire spreading scales 2-3 mm. long; stipes slender, pale 

 green, sparingly scaly, 3-25 cm. long; blades coriaceous- 

 herbaceous, lanceolate to linear-lanceolate, 7-20 (-30) cm. 

 long, 1-2.5 (-3) cm. wide, acuminate, obtuse to acute at base, 

 entire to obsoletely undulate, margin slightly recurved, gla- 

 brous, dark green above, paler beneath, flat except for the 

 raised midrib beneath; veins once to thrice forked near base, 

 the veinlets parallel, nearly at right angles to the costa; sori 

 linear, parallel; indusia linear, asplcnioid, somerimes also 



diplazioid, 5-12 mm. long, entire. Shaded places; Honshu, 



Shikoku, Kyushu; common. Ryukyus, Formosa, China, 



India to Ceylon. 



Var. crenatum (Makino) Ohwi. Diplazium lanceum var. 

 crenatum Makino; D. tomitaroanum Masam.; D. lanceum var. 



