ASPIDIACEAE 



83 



koku, Kyushu; rather common. s. Kuriles, SakhaUn, Ko- 

 rea, Manchuria, China, and Formosa. 



17. Ath>Tium grammitoides (Presl) Milde. Diplaz- 

 ium grammitoides Presl; Asplenium grammitoides (Presl) 

 Hook.; A. conilii Fr. & Sav.; D. conilii (Fr. & Sav.) Makino; 

 D. japonictim var. conilii (Fr. & Sav.) Makino; A. conilii var. 

 coreantim Hook. & Bak.; D. japonictim var. latipes Rosenst.; 



Athyritim conilii (Fr. & Sav.) Tagavva Hosoba-shike-shida. 



Rhizomes creeping, branched, slender, 1-1.5 mm. across, 

 sparsely scaly; fronds nearly glabrous to sparsely pubescent; 

 stipes slender, 7-20(-25) cm. long, sparsely scaly, pale green, 

 brownish toward base; scales membranous, pale brown, 

 broadly lanceolate to linear-lanceolate, 2-5 mm. long, to 2 mm. 

 wide, entire; blades broadly lanceolate, 10-20 cm. long, 2.5-6 

 cm. wide, gradually acute to acuminate, slightly to scarcely 

 narrowed toward base, simply pinnate, the rachis often 

 sparsely scaly; pinnae 10-15 pairs, herbaceous, oblong-ovate to 

 elliptic, 1-3 cm. long, 5-8 mm. wide, obtuse to rounded, ses- 

 sile, spreading, crenate, the upper ones adnate to the rachis, 

 the lower ones undivided, lobed, cleft, or rarely parted; sori 



often diplazioid. Shaded places in lowlands and low 



mountains; Hokkaido, Honshu, Shikoku, Kyushu. Korea, 



Ryukyus, Formosa, Philippines, and Malaysia. Common and 

 variable, closely related to A. japonictim. 



Var. oldhatnii (Hook. & Bak.) Ohwi. Asplenium japoni- 

 ctim var. oldhamii Hook. & Bak.; Diplazium oldhamii (Hook. 

 & Bak.) H. Chr.; Diplazium conilii var. oldhamii (Hook. & 

 Bak.) Nakai; Athyrium conilii var. oldhamii (Hook. & Bak.) 

 Tagawa; D. japonicum var. oldhamii (Hook. & Bak.) C. Chr. 



Yabu-shida. Plants smaller, with narrower fronds and 



fewer scales. 



Var. simplicifolium (Makino) Ohwi. Diplazium conilii 

 var. simplicifolium Makino; D. lobatocrenatum Tagawa; D. 

 lancettm var. subtripinnatiim Nakai; Lttnathyrium lobato- 

 crenatum (Tagawa) Kurata; Athyrium lobatocrenatum (Ta- 

 gawa) Tagawa Hitotsuba-shike-shida. Blades simply 



pinnate. Honshu (Izu Prov.), Shikoku, Kyushu; rare. 



18. Athyrium japonicum (Thunb.) Copel. Asplenium 

 japonicum Thunb.; Diplazium japonicum Bedd.; Lunathyr- 

 ium japonicum (Thunb.) Kurata; Athyrium oshimense Christ; 



D. oshimense (Christ) H. Ito; D. thunbergii Nakai Shike- 



SHIDA. Rhizomes creeping, branched, about 2 mm. across; 

 stipes 15-35 cm. long, slender, the scales on lower half lanceo- 

 late to broadly so, 5-10 mm. long, 1.5-3 mm. wide, brown, 

 entire, those on the upper half linear-lanceolate to linear, 2-3 

 mm. long, 0.2-1 mm. wide; blades herbaceous, broadly lanceo- 

 late to narrowly oblong-ovate, 25-40 cm. long, 8-15 cm. wide, 

 acuminate, usually scarcely narrowed at base, pinnate, nearly 

 glabrous to thinly pubescent on both sides; pinnae pinnately- 

 cleft to sometimes parted, lanceolate, 1-2 cm. wide, acuminate, 

 spreading, or the lowest pair slightly reflexed, sessile, truncate 

 and nearly equilateral at base, sessile, the upper pinnae small 

 and adnate to rachis at base; pinnules elliptic, 4-7 mm. wide, 

 rounded to obtuse, crenate; sori 6-10 on each pinnule, median; 

 indusia lanceolate to broadly linear, 2-3.5 mm. long, closely 

 parallel, ascending, solitary or sometimes diplazioid in the 



lowest acroscopic one, minutely erose to ciliolate. Shaded 



places in lowlands and foothills; Honshu, Shikoku, Kyushu; 

 common. Korea, Ryukyus, Formosa, China, and India. 



Var. dimorphophyllum (Koidz.) Ohwi. A. dimorpho- 

 phyllum (Koidz.) Tagawa; Lunathyrium dimorphophyllum 

 (Koidz.) Kurata; Diplazium dimorphophyllum Koidz. 



Seitaka-shike-shida. Plant stouter; fronds slightly di- 

 morphic, usually thinly pubescent on both sides at least while 

 young; rhizomes 3-4 mm. across; stipes 20-50 cm. long, 

 sparingly scaly; scales linear-lanceolate to lanceolate, pale 

 brown, 5-12 mm. long; blades ovate-oblong to ovate, 20-50 

 cm. long, 20-30 cm. wide, not narrowed at base; pinnae 8-10 

 pairs, broadly lanceolate, 1.5-3 cm. wide, the pinnules nar- 

 rowly ovate-oblong. Shaded places; Honshu, Shikoku, 



Kyushu. 

 Var. kiusianum (Koidz.) Ohwi. A. kjusianum (Koidz.) 



Tagawa; Diplazium /{iiisianum Koidz. Mukuce-shike- 



SHiDA. Larger and denser pubescent; scales abundant on 

 stipes and rachis. Kyushu (centr. distr.). 



19. Athyrium iseanum Rosenst. A. goeringianum sensu 

 auct. Japon., non Moore; A. iseanum var. angustisectum Ta- 

 gawa, and var. obtusum Tagawa Hosoba-inu-warabi. 



Rhizomes short; fronds tufted; stipes 10-25 cm. long, straw- 

 colored to pale green, sparsely scaly toward the base; scales 

 pale brown, thinly membranous, linear-lanceolate, entire, 2-5 

 mm. long; blades broadly to narrowly ovate, 15-35 cm. long, 

 10-20 cm. wide, caudately acuminate, not at all or only slightly 

 narrowed at base, bipinnate; pinnae 5-10 pairs, broadly lanceo- 

 late or the smaller ones oblong-ovate, 1.7-3 cm. wide, caudately 

 acuminate, short-petiolulate; pinnules oblong-ovate to deltoid- 

 ovate, 1-1.7 cm. long, obtuse to acute, broadly cuneate at base, 

 oblique, rather irregularly lobulate to parted, rarely dissected 

 to the costules, coarsely mucronate-toothed, with a few fleshy 

 deciduous bristles on upper side along the costas; indusia 

 usually asplenioid, 1-2 mm. long, sometimes also athyrioid, en- 

 tire. Shaded places in low mountains; Honshu (Awa, Izu, 



and Echigo Prov. westw.), Shikoku, Kyushu; rather common. 

 Formosa. 



20. Athyrium frangulum Tagawa. A. iseanum var. 



fragile Tagawa Miyako-inu-warabi. Rhizomes erect, 



short; fronds soft, thin, tufted; stipes 15-35 cm. long, pur- 

 plish, glabrous, sparsely scaly at base; scales pale brown, mem- 

 branous, lanceolate to linear-lanceolate, 3-4 mm. long, entire; 

 blades oblong-ovate to ovate, 20-40 cm. long, 15-25 cm. wide, 

 acuminate, not narrowed at base, bipinnate; pinnae broadly 

 lanceolate to oblong-ovate, 2-5 cm. wide, long-acuminate, 

 obliquely spreading, short-petiolulate; pinnules narrowly ovate 

 to oblong-ovate, 1.5-2.5 cm. long, 5-10 mm. wide, acute to 

 obtuse, slightly oblique and cuneate at base, very short-petio- 

 lulate to sessile, lobulate to parted, acutely mucronate-toothed, 

 with a few fleshy deciduous bristies along the costas on upper 

 side; sori in 2 rows along the costas; indusia lanceolate to 

 oblong, straight (asplenioid), sometimes also athyrioid, very 



rarely diplazioid, entire. Low mountains; Honshu (Kanto 



Distr. and westw.), Shikoku, Kyushu. 



21. Athyrium tozanense (Hayata) Hayata. Asplenium 



tozanense Hayata Shima-inu-warabi. Rhizomes erect or 



ascending, the basal stubs of old stipes persistent; fronds 

 tufted, small, slender, glabrous, sometimes sparsely puberulent 

 on the rachis of the pinnae beneath; stipes 5-15 cm. long, 

 slender, scaly while young, pale green, brownish toward the 

 base, dull; scales thinly membranous, pale brown, broadly 

 lanceolate, about 3 mm. long, scarcely 1 mm. wide, entire; 

 blades membranous, lanceolate-deltoid, 12-20 cm. long, 5-10 

 cm. wide, acuminate to caudately acuminate, scarcely nar- 

 rowed at base, bipinnatisect or sometimes bipinnate in the 

 lower portion; pinnae 8 or 9 pairs, narrowly ovate, 2.5-5 cm. 

 long, 1-1.8 cm. wide, acute to short-acuminate, spreading. 



