ASPIDIACEAE 



67 



short-petiolulate, toothed and lobulate, with Hnear to filiform 

 scales on costas (and costules) beneath, base of veins on upper 

 side with a fleshy short spinelike hair; veins single in each 

 lobule, subpinnate, die veinlets simple; lowest pinnae slighdy 

 deflexed, deltoid-lanceolate, 3-5 cm. long, 1-1.5 cm. wide, acute; 

 sori on both sides nearer the margin than to the costa; indusia 



orbicular-reniform, about 0.5 mm. across, entire. Honshu, 



Shikoku, Kyushu. China. 



Dryopteris tasiroi Tagawa. Tsukushi-6-kujaku. Said 

 to differ from the preceding in the smaller fronds, oblong- 

 lanceolate pinnae with parallel sides on the lower two-thirds, 

 and very short sometimes double, incumbent, long-acuminate 

 teeth, with 2 or 3 pairs of veinlets closer together, and smaller 

 intramarginal sori disposed in 2 irregular series on the pinnae. 

 Poorly understood. Kyushu. 



14. Dryopteris atrata (Wall.) Ching. Aspidium atra- 

 tum Wall, ex Kunze; Dryopteris cycadina (Fr. & Sav.) C. 

 Chr.; Aspidium cycadinum Fr. & Sav.; D. hirtipes sensu auct. 



Japon., non O. Kuntze Iwa-hego. Rhizomes stout, short; 



fronds evergreen; stipes crowded, 20—45 cm. long, pale brown, 

 prominendy scaly; scales spreading, chartaceous, black-brown 

 to purplish brown, lustrous, linear-lanceolate, the largest some- 

 times lanceolate, 7-20 mm. long, with a long filiform tip, 

 spinulose-ciliate, the basal scales ascending, brown, subentire; 

 blades chartaceous, oblanceolate to oblong-oblanceolate, 40-60 

 cm. long, 15-25 cm. wide, abruptly contracted and long-acumi- 

 nate, slightly narrowed at base, the rachis with smaller, broadly 

 linear, sparsely ciliate scales; pinnae 20-30 pairs, horizontally 

 spreading, broadly linear, 1-2 cm. wide, long-acuminate, 

 truncate to subcordate at base, sessile or very short-petiolulate, 

 sparsely scaly beneath, more densely so on the costas, nearly 

 glabrous above, coarsely toothed, with a broad mucro on 

 anterior margin near dp; veins single to a tooth, subpinnate, 

 the veinlets simple; lowest pinna sometimes smaller than the 

 others, deltoid-lanceolate, 5-13 cm. long, slighdy deflexed; sori 

 nearer the costa than the margin; indusia orbicular-reniform, 



about 0.5 mm. across, nearly entire. Honshu (s. Kanto 



through Tokaido to Kinki Distr. and westw.), Shikoku, Kyu- 

 shu. Quelpaert Isl., Formosa, China to n. India. 



15. Dryopteris sieboldu (Moore) C. Chr. Pycnopteris 

 sieboldii Moore; Aspidium sieboldii Van Houtte: Lastrea sie- 

 boldii (Moore) Moore; Nephrodium sieboldii (Moore) Hook. 

 0-^^TsuDE. Rhizomes stout, short-creeping; stipes straw- 

 colored or pale brown, rather stout, 30-60 cm. long; scales 

 deciduous, dark-brown, linear, 5-12 mm. long, tapering to a 

 long filiform tip, sparsely spinulose-ciliate, the basal scales 

 membranous, many, dense, brown, hnear-lanceolate, 15-20 

 mm. long, subentire; blades broadly ovate, 20-50 cm. long, 

 20-35 cm. wide, simply pinnate, the rachis straw-colored, 

 glabrate, rather stout, 5-20 cm. long; pinnae 2-5 pairs, coria- 

 ceous-chartaceous, unlobed, linear-lanceolate to oblong-lanceo- 

 late, oblique, abruptly or gradually acuminate, usually rounded 

 at base, with short, linear, hairlike scales beneath, glabrous 

 above, very short-petiolulate or sessile and the upper ones often 

 narrowly adnate at base, the costa raised beneath; fertile 

 pinnae 10-25 cm. long, 15-35 mm. wide, subentire or crenate, 

 the sterile broader, 10-30 cm. long, 3-7 cm. wide, crenate to 

 mucronatc-toothed; sori mosdy toward die margin; indusia 



orbicular-reniform, entire, about 1.5 mm. across. Woods; 



Honshu (s. Kanto to Tokaido and Chiigoku Distr.), Shikoku, 

 Kyushu. Formosa. 



16. Dr>'opteris toyamae Tagawa. D. sieboldii var. 

 ioyamae (Tagawa) Kurata Nagasaki-shida-modoki. Very 



closely allied to the preceding; rhizomes stout, ascending; 

 stipes straw-colored, 20-30 cm. long, densely scaly toward the 

 base; basal scales brown, membranous, lustrous, lanceolate 

 to linear-lanceolate, 1-1.5 cm. long, long-acuminate, entire, 

 those on the upper part of stipes and lower part of rachis very 

 sparse, dark-brown, linear, 3-7 mm. long, sparsely spinulose- 

 ciliate; fertile blades broadly ovate, 30-40 cm. long, 25-40 

 cm. wide, the rachis 20-25 cm. long; pinnae 5-7 pairs, linear- 

 lanceolate, 2-3 cm. wide, gradually acuminate, the lower ones 

 pinnately parted, the upper lobed, mucronate-toodied, the lobes 

 oblique, ovate-deltoid to oblong, abrupdy acute to obtuse, the 

 basal pinnae often smaller and cut nearly to the base; veins 

 subpinnate, single to a lobe, the veinlets elongate, simple; 

 terminal pinna pinnatiparted; sori scattered, sometimes more 

 so toward margin; indusia orbicular-reniform, entire, about 



1.5 mm. across. Honshu (reported from Mount Kiyosumi 



in Awa Prov.), Kyushu (Hizen and Higo Prov.); rare. 



Formosa. 



17. Dryopteris sabae (Fr. & Sav.) C. Chr. Aspidium 

 sabae Fr. & Sav.; Nephrodium sabae (Fr. & Sav.) Hand.- 



Mazz.; A. filix-mas var. sabae (Fr. & Sav.) Christ Miyama- 



ITACHI-SHIDA. Rhizomes short, erect; stipes many, tufted, 

 15-30 cm. long, deep-brown, lustrous on lower half, promi- 

 nently scaly especially toward base; scales brown, narrowly to 

 broadly ovate, 5-10 mm. long, abrupdy acuminate, lustrous, 

 spreading, entire; blades ovate, 20-40 cm. long, 15-25 cm. 

 wide, abruptly acuminate, bipinnate, in the lower part often 

 tripinnate, the rachis straw-colored, sparsely scaly while young; 

 pinnae 5-7 pairs, narrowly oblong-ovate, the median equi- 

 lateral, the lowest deltoid-ovate, oblique, acuminate, short- 

 petiolulate; pinnules thick-chartaceous, deltoid-oblong to -lance- 

 olate, 1.5-4 cm. long, 8-25 mm. wide, obtuse to acute, acute- 

 or mucronate-toothed, glabrous on both sides, pinnately parted 

 to lobed, the lowest posterior pinnule of the lowest pinnae 

 largest, acuminate, 4-8 cm. long; sori on upper half of the 

 blade, mostly nearly median, in 2 series on the ultimate pin- 

 nule; indusia orbicular-reniform, 1-1.2 mm. wide, entire, 

 slightly incurved and thinner on margin. Hokkaido, Hon- 

 shu, Shikoku, Kyushu. 



18. Dryopteris hayatae Tagawa. D. suhexaUata sensu 



auct. Japon., non C. Chr. Inu-tama-shida. Rhizomes 



short; stipes tufted, slender, lustrous, 10-30 cm. long, chesmut- 

 brown, sparsely scaly toward base, nearly naked in upper part; 

 scales linear-lanceolate, gradually acuminate, brown, often with 

 few dark striations, spreading, 2-3 mm. long, the basal ones 

 chartaceous, 6-10 mm. long; blades narrowly ovate, 15-30 

 cm. long, 8-15 cm. wide, acuminate to caudate with an obtuse 

 to acute tip, bipinnate; pinnae 5-8 pairs, petiolulate, oblong- 

 ovate, rarely linear-oblong, 2-4 cm. long, often caudate at the 

 tip, the lowest pinnae ovate-deltoid, to 5 cm. wide, oblique; 

 pinnules chartaceous, narrowly oblong to deltoid-lanceolate, 

 1-2 cm. long, 5-10 mm. wide, rounded to obtuse, cuneate at 

 base, acute- to mucronate-toothed, often lobulate or parted, the 

 lowest pinnule of the basal pinnae largest, usually deltoid-ovate, 

 about 5 cm. long, 2 cm. wide; sori median in 2 series on the 

 ultimate pinnules; indusia subreniform, entire, strongly in- 

 curved on margin, 2- or 3-lobed at maturity, about 1 mm. 



across. Honshu (Hachijo Isl.), Kyushu (Osumi Prov. incl. 



Yakushima). Ryukyus and Formosa. 



19. Dryopteris sparsa (Hamilt. ex D. Don) O. Kuntze. 

 Nephrodium sparsiim Hamilt. ex D. Don; Aspidium sparsum 

 (Hamilt.) Spreng.; Lastrea sparsa (Hamilt.) Moore; N. viri- 

 descens Bak.; D. viridescens (Bak.) O. Kuntze Nagaba-no- 



