82 



ASPIDIACEAE 



grandicrenatum Nakai ex H. Ito ^Nokogiri-hera-shida. 



Blades pinnately lobed to parted, the lobes rounded at apex, 



entire; sori few pairs on the lobes, short-linear. Honshu 



(Izu Isls.), Shikoku, Kyushu. Ryukyus and Formosa. 



11. Athyrium nakanoi Makino. Hime-hobi-shida. 

 Rhizomes short, with the remains of old fronds; fronds 15-30 

 cm. long; stipes 2-5 cm. long, slender, slightly lustrous, 

 brownish in lower part, with membranous, pale brown, en- 

 tire, ovate-triangular to broadly lanceolate scales 2-3 mm. 

 long; blades membranous-herbaceous, lanceolate, 13-25 cm. 

 long, about 3 cm. wide, gradually acuminate, slightly con- 

 tracted at base, deep green, thinly puberulent while very 

 young on underside and on rachis; pinnae 14-18 pairs, oblong 

 to ovate, 1-1.7 cm. long, 5-8 mm. wide, obtuse, auriculate 

 and nearly truncate on upper side at base, cuneate on lower 

 side, crenately toothed, spreading, penninerved, the lower 1 

 or 2 pairs smaller and subreflexed; veinlets usually simple 

 except the one on the auricle and this pinnately branched; 

 sori 5-10 on a pinnule, median; indusia membranous, reni- 



form or obovate, erose-dentate. ^Mountains; Kyushu (Yaku- 



shima); rare. Formosa. 



12. Athyrium okudairae (Makino) Ohwi. Diplasium 



o\udairae Makino Iyo-kujaku. Rhizomes creeping, 



nearly naked, 3-4 mm. across, rather loosely leaved; fronds 

 glabrous, flaccid; stipes 20-30 cm. long, pale green, brownish 

 at base, sparingly scaly; scales linear-lanceolate, dark brown, 

 3-5 mm. long, about 1 mm. wide, entire or obsoletely toothed 

 on margin; blades deltoid-lanceolate, 25-35 cm. long, 15-20 

 cm. wide, simply pinnate, caudate-acuminate, broad at base; 

 pinnae 10-12 pairs, thinly herbaceous, lanceolate, 7-11 cm. 

 long, 2-2.5 cm. wide, caudate-acuminate, falcate, the upper 

 ones adnate and decurrent on the winged rachis, the lower 

 ones short-petiolulate, auriculate and nearly truncate on outer 

 side at base, cuneate on lower side, pinnately lobulate and 

 acutely denticulate or doubly toothed; costa raised beneath, 

 the veins pinnate, the veinlets very slender, distinct on both 

 sides; sori subcostal, linear, to 1 cm. long; indusia linear, en- 

 tire, straight, solitary, rarely diplazioid. ^Woods; Honshu 



(Izu Prov. through Tokaido and s. Kinki to Chugoku Distr.), 

 Shikoku, Kyushu; rare. 



13. Athyrium wichurae (Mett.) Ohwi. Asplenium 

 u/ichurae Mett.; Diplazium wichurae (Mett.) Diels; D. 

 wichurae var. amabile Tagawa Nokogiri-shida. Rhi- 

 zomes creeping, rather loosely leafy, 2-2.5 mm. across, wiry, 

 nearly naked; fronds glabrous; stipes firm, 10-25 cm. long, 

 pale green to brownish, very sparsely scaly; scales subulate- 

 lanceolate, 4-6 mm. long, 1-1.5 mm. wide, entire, brown; 

 blades broadly lanceolate, 20-35 cm. long, 10-20 cm. wide, 

 short-caudate, not narrowed at base, the rachis not winged; 

 pinnae 10-15 pairs, 6-10 cm. long, 1-2 cm. wide, caudate- 

 acuminate, short-petiolulate or a few of the upper ones 

 sessile and adnate at base, slightiy falcate, denticulate, often 

 pinnately lobulate, strongly auriculate and truncate at base on 

 upper side, cuneate on lower side; costa and veins often im- 

 pressed above, distinct but scarcely raised beneath; sori on the 

 lowest veinlets, linear; indusia linear, solitary, very rarely 

 diplazioid, slightly arcuate, obliquely ascending, entire, 5-8 



mm. long, about 1 mm. wide. Woods; Honshu (s. Kanto 



Distr. and westw.), Shikoku, Kyushu; rather rare. Ryuk- 

 yus, Formosa, and China. 



14. Athyrium pterorachis Christ. Dryoathyrium ptero- 

 rachis (Christ) Ching; Lunathyrium pterorachis (Christ) 



Kurata; Parathyrium pterorachis (Christ) Holttum O-me- 



SHiDA. Stipes stout, light brown, tufted, about 60 cm. long, 

 dilated near base, to 15 mm. wide above the base, very sparsely 

 scaly in the upper part, rather densely so toward the base; 

 scales pale brown, membranous, broadly lanceolate to ovate, 

 1.5-2.5 cm. long, 4-8 mm. wide, entire; blades herbaceous, 

 narrowly oblong, often more than 1 m. long, 35-45 cm. wide, 

 short-acuminate, slightly narrowed at base, bipinnatiparted; 

 pinnae 15-20 pairs, subopposite to alternate, spreading, linear- 

 lanceolate, about 20 cm. long, 3.5-4 cm. wide, acuminate, 

 scarcely narrowed at base, sessile, sparingly pubescent while 

 young along costas, the rachis prominently winged; pinnules 

 numerous, horizontally spreading, narrowly oblong, 4-8 mm. 

 wide, obtuse, pinnately lobed; sori 12-20, subcosmlar; indusia 

 lanceolate, 1-2 mm. long, slightly arcuate, sometimes some- 

 what athyrioid, minutely ciliolate. Wet meadows in moun- 

 tains; Hokkaido, Honshu (centr. and n. distr.). Sakhalin, 



s. Kuriles, and Kamchatka. 



15. Athyrium henryi (Bak.) Diels. Aspidium henryi 

 Bak.; Dryoathyrium henryi (Bak.) Ching; Lunathyrium 

 henryi (Bak.) Kurata; Athyrium coreanum Christ; A. de- 

 cur sivum Yabe; Dryoathyrium coreanum (Christ) Tagawa; 



A. heterophyllum Nakai K5rai-inu-warabi. Rhizomes 



short-creeping; fronds tufted; stipes 20-40 cm. long, thinly 

 scaly in lower part, 4-5 mm. across near base; scales pale 

 brown, membranous, broadly lanceolate, entire; blades thinly 

 herbaceous, broadly lanceolate to narrowly ovate, 35-50 cm. 

 long, 17-22 cm. wide, slightiy narrowed at base, bipinnati- 

 parted, vivid green, paler beneath; pinnae about 10 pairs, sub- 

 opposite or subalternate, lanceolate, 2-3.5 cm. wide, long- 

 acuminate, sessile, short-hairy on costas above and on under- 

 side while young or glabrous, the rachis prominently winged; 

 pinnules rather many, oblong to oblong-ovate, 1-1.5 cm. long, 

 5-7 mm. wide, obtuse, lobed to coarsely toothed; sori 4-12, 

 nearly median; indusia 1-2 mm. long, slightly arcuate, often 

 athyrioid, minutely ciliolate. Honshu (centr. distr.), Kyu- 

 shu (n. distr.) ; rare. Korea, Manchuria, and e. Siberia. 



Var. kiyozumianum (Kurata) Tagawa. A. coreanum 

 var. kiyozumianum (Kurata) Ohwi; Lunathyrium henryi 

 var. \iyosumianum (Kurata) Kurata; Dryoathyrium core- 

 anum var. kiyozumianum Kurata Kiyozumi-me-shida. 



Stipes shorter, 9-16 cm. long; scales more abundant on stipes 

 and rachis. Honshu (Mount Kiyozumi in Awa Prov.). 



16. Athyrium pycnosorum Christ. A. acrostichoides 

 sensu auct. Japon., non Diels; Lunathyrium pycnosorum 

 (Christ) Koidz.; A. acrostichoides Diels var. pycnosorum 



(Christ) C. Chr. Miyama-shike-shida, Hakumo-inode. 



Rhizomes short; fronds tufted, to 1 m. long, nearly glabrous 

 or prominently pubescent; stipes 15-30 cm. long, pale green, 

 often purplish; scales membranous, linear to narrowly lanceo- 

 late, the upper ones 2-5 mm. long, the basal ones 2-3 mm. 

 wide, 8-12 mm. long; blades herbaceous, broadly oblanceolate 

 to oblong, usually broadest above the middle, 40-70 cm. long, 

 10-17 cm. wide, bipinnatiparted, abruptly long-acuminate, 

 gradually narrowed at base; pinnae 15-22 pairs, alternate, 

 spreading, linear-lanceolate, 6-10 cm. long, 1-1.7 cm. wide, 

 long-acuminate, truncate at base, sessile, the lower few distant, 

 ovate-deltoid, slightly reflexed; pinnules elliptic to oblong, 

 3-5 mm. wide, rounded at apex, crenately toothed; sori 3-6 

 pairs on each pinnule, obliquely ascending; indusia oblong to 

 lanceolate, 1-3 mm. long, solitary, rarely athyrioid and dipla- 

 zioid. Wet slopes in mountains; Hokkaido, Honshu, Shi- 



