ASPIDIACEAE 



ing, stout; stipes 40-70 cm. long, brown, stout, scarcely lustrous; 

 scales ovate-lanceolate, 1-1.3 cm. long, 1.5-3 mm. wide, 

 fugacious, dark brown, spinulose; blades glabrous, deltoid- 

 ovate, 50-80 cm. long and nearly as wide, acuminate, 3-pinnati- 

 parted in lower portion, bipinnate in upper portion, the rachis 

 smooth; pinnae 7-10 pairs, spreading, equilateral, 30-40 cm. 

 long, the lowest one 15-18 cm. wide, the middle ones 7-12 cm. 

 wide, petiolulate; pinnules equilateral, oblong- to deltoid- 

 lanceolate, 5-10 cm. long, 12-20 mm. wide, truncate at base, 

 acuminate, crenate-toothed, pinnately lobed or more often 

 -parted, petiolulate or sessile; pinnules ovate-oblong to ovate, 

 4-6 mm. wide, very obtuse to acutish; sori 1-12 on each pin- 

 nule, slightly nearer the costule than the margin, obliquely 

 ascending, linear, unequal; indusia linear, 2-3 (-4) mm. long, 

 straight, single, frequently diplazioid and longer on the lowest 

 anterior veinlets, subentire. Honshu, Shikoliu, Kyushu. 



45. Athyrium doederleinii (Luerss.) Ohwi. Asplenium 

 doederleinii Luerss.; Diplazium doederleinii (Luerss.) Ma- 

 kino; D. aridum Christ; Athyrium nudicaule Copel. Shi- 



ma-Shiroyama-shida. Rhizomes long-creeping, stout, with the 

 short persistent basal stubs of old stipes; stipes 40-50 cm. long, 

 pale green, dark brown toward base, scarcely scaly; blades 

 herbaceous, deltoid-ovate, 50-60 cm. long and as wide, bipin- 

 nate; pinnae 7-8 pairs, equilateral, alternate, ovate-oblong, 

 10-15 cm. wide, acuminate, petiolulate; pinnules nearly hori- 

 zontally spreading, narrowly ovate-deltoid to broadly deltoid- 

 lanceolate, 3.5-7 cm. long, 1.8-3 cm. wide, acuminate, sessile 

 or short-peuolulate, truncate at base, pinnately cleft to shal- 

 lowly parted; pinnules elliptic to obliquely ovate, rounded or 

 with a short acutish tip; veinlets sometimes forked; sori costu- 

 lar, on basal portion of the veinlets; indusia unequal in length, 

 3.5-4.5 mm. long, sometimes diplazioid on the lowest veinlets, 



solitary, 1.5-3.5 mm. long in those of the other veinlets. 



Honshu (Ise Prov. and westw.), Shikoku, Kyushu. Ryu- 



kyus, Formosa, s. China, Indochina. 



46. Athyrium hachijoense (Nakai) Ohwi. Diplazium 



hachijoense Nakai; D. siroyamense Tagawa Shiroyama- 



SHiDA. Rhizomes creeping, stout, blackish; stipes 45-60 cm. 

 long, stout, sparsely scaly and about 1 cm. across at base; scales 

 fugacious, fuscous, membranous, lanceolate to linear-lanceolate, 

 about 5 mm. long, 1-2 mm. wide, entire; blades deltoid-ovate, 

 40-80 cm. long, 30-60 cm. wide, bipinnate, the rachis greenish, 

 glabrous or very thinly puberulous; pinnae 8-13 pairs, 

 spreading, oblong-lanceolate, the lowest 18-40 cm. long, 

 8-13 cm. wide, acuminate, petiolulate; pinnules deltoid-lanceo- 

 late to linear-lanceolate, 4-7 cm. long, 1.3-2 cm. wide, acumi- 

 nate, truncate at base, short-petiolulate or sessile, pinnately 

 cleft or sometimes parted; ultimate pinnules elliptic, obsoletely 

 toothed; veinlets simple, or lower ones forked; sori median, 

 linear, 2-3 mm. long; indusia thin, erose, solitary, frequendy 

 diplazioid in the lowermost lobe. Woods in low moun- 

 tains; Honshu (Izu, Etchu Prov. and westw.), Shikoku, Kyu- 

 shu. Korea (Quelpaert IsL), and Ryukyus. 



47. Athyrium virescens (Kunze) Ohwi. Diplazium 

 virescens Kunze; Asplenium virescens (Kunze) Mett.; Asple- 

 nium wheeleri Bak.; D. wheeleri (Bak.) Diels; D. lutchuense 

 Koidz.; D. allantodioides Ching Kokumo-kujaku. Rhi- 

 zomes creeping, rather stout, black-scaly toward the tip; stipes 

 40-60 cm. long, straw-colored, prominently scaly and blackish 

 toward the base; scales broadly linear, 5-10 mm. long, 

 l-1.5(-2) mm. wide, nearly black, lustrous, prominently 

 spinulose; blades chartaceous to thinly coriaceous, broadly del- 

 toid-ovate, long-acuminate, glabrous, bipinnate in the lower 



portion; pinnae 5-8 pairs, alternate, the lower ones spreading, 

 equilateral, broadly lanceolate to narrowly deltoid-ovate, 17-30 

 cm. long, 6-15 cm. wide, gradually acuminate, distinctly 

 petiolulate, the lowest ones largest, the petiolules 2-5 cm. long; 

 upper pinnae simple, lanceolate-deltoid, lobulate to parted, the 

 terminal pinna decurrent on the rachis, pinnatilobed; pinnules 

 of the lower pinnae horizontally spreading, lanceolate-deltoid, 

 3-7 cm. long, 1-1.5 cm. wide, acuminate to acute, sometimes 

 obtuse, truncate at the base, crenately toothed, lobulate to 

 lobed, slightly recurved on margin; veins pinnately branched, 

 solitary in a lobule or lobe; sori linear; indusia thin, narrow, 



linear, 1-3 mm. long. Honshu (Izu and Kii Prov. westw.), 



Shikoku, Kyushu. Ryukyus, Formosa, s. China, and Indo- 

 china. 

 Athyrium okinawaense (Tagawa) Ohwi. Diplazium 



o\inawaense Tagawa Okinawa-kujaku. Stipes densely 



black-scaly at base; pinnae alternate, ovate-lanceolate, long- 

 petiolulate; pinnules ovate-lanceolate, acuminate, 3-angled, pin- 

 nately parted, the ultimate pinnules oblong, obtuse to rounded; 



sori linear, about 2 mm. long, subcostal. ^Reported to occur 



in Honshu (Kii Prov.), Shikoku, Kyushu (Tanegashima) . 



Ryukyus. 



48. Athyrium maximum (G. Don) Copel. Asplenium 

 maximum G. Don; Diplazium dilatatum Bl.; D. latifolium 

 Moore; Athyrium latifolium (Moore) Milde; D. uraiense 

 Rosenst.; D. latifolium var. cyclolobum Christ; D. crinipes 



Ching; D. uraiense var. cyclolobum (Christ) Tagawa 



HiROHA-NOKOGiRi-sHiDA. Rhizomcs short, ascending, stout; 

 stipes 30-60 cm. long, stout, rather densely scaly toward base, 

 green; scales lanceolate, 8-13 mm. long, about 1 mm. wide, lin- 

 ear to filiform at the tip, dark brown, remotely spinulose; blades 

 chartaceous, large, deltoid, 50-80 cm. long, narrower or nearly 

 as wide, acuminate, bipinnate in the lower portion, abruptly 

 pinnate in the upper part, dark green or brownish when dried, 

 paler beneath; pinnae 7-10 pairs, alternate, equilateral, the 

 lower ones broadly deltoid-lanceolate, 30-40 cm. long, 10-20 

 cm. wide, gradually acuminate, pinnate, petiolulate, the upper 

 pinnae deltoid-lanceolate, 10-20 cm. long, 2-4 cm. wide, 

 gradually long-acuminate, truncate at base, short-petiolulate, 

 doubly toothed, lobulate, the terminal pinna decurrent on the 

 rachis; sori few to each lobe, linear, subcostal; indusia 3-5 (-7) 

 mm. long, the lowest anterior ones longest and often diplazi- 

 oid. Honshu (Hachijo Isl., and Kii Prov.), Kyushu (s. 



distr.). Ryukyus, Formosa, China, Australia to Polynesia. 



Athyrium yakumontanum (Tagawa) Ohwi. Diplazium 



ya\umontanum Tagawa ^Yakushima-warabi. Differs 



from A. maximum in the narrower, linear-lanceolate pinnules 

 about 1 cm. wide near base. Honshu (Suwo Prov.), Kyu- 

 shu (Yakushima). Poorly understood. 



49. Athyrium petri (Tard.-Bl.) Ohwi. Diplazium petri 



Tard.-BI.; D. triangulare Tagawa Hiroha-miyama-noko- 



GiRi-SHiDA. Rhizomes creeping, firm; stipes light brown, 

 40-60 cm. long, rather prominently scaly, dark brown near 

 base; scales linear to broadly so, 5-10 mm. long, about 1-1.5 

 mm. wide, spinulose; blades chartaceous, broadly deltoid- 

 lanceolate to narrowly ovate-deltoid, 40-50 cm. long, 20-25 

 cm. wide, acuminate, not narrowed at base, bipinnatiparted 

 (in ours); pinnae 12-14 pairs, spreading, acuminate, equi- 

 lateral, 10-20 cm. long, 2.5-3 cm. wide, petiolulate, truncate to 

 slightly cordate at base, pinnately parted to deeply lobed, the 

 upper ones smaller and decurrent on the rachis; pinnules ob- 

 long to narrowly ovate-oblong, 5-8 mm. wide, rounded to 

 obtuse or acute, crenate-toothed; sori 8-14, median or slightly 



