96 



Aspleniaceae; Polypodiaceae 



l-1.5(-2) cm. wide, gradually narrowed at base to the short 

 winged stipe, subentire to remotely undulate-toothed, scarcely 

 cartilaginous on margin, sometimes bifid, nearly glabrous on 

 both sides; costa slightly raised on both sides; veins parallel, 

 once-forked; sori elongate, suberect to ascending, mostly on 

 the anterior branchlet of veins, distant, straight; indusia 7-20 



mm. long. Kyushu (s. distr.); rare. Formosa and sw. 



China to India. 



22. Asplenium scolopendrium L. Phyllitis scolopen- 

 drium (L.) Newm.; Scolopendrium vulgare Smith; S. of- 



ficinarum Sw. ^Ko-tani-watari. Rhizomes ascending to 



short-creeping, clothed with basal remains of old stipes; stipes 

 10-20 cm. long, shorter than the blades, densely scaly while 

 young, the scales membranous, deltoid-lanceolate, 5-8 mm. 

 long, 1-2 mm. wide near base, long-filiform at the tip, brown, 

 spreading, flexuous, very sparingly ciliate; blades chartaceous- 

 herbaceous, simple, narrowly to broadly lanceolate, 15-40 cm. 

 long, 3.5-6 cm. wide, acute, cordate-auriculate at base, entire 

 to undulate, green above, slightly paler and with minute 

 brown scales beneath while young, indistinctly hyaline on 

 margin; costa with brown linear scales while young, especially 

 beneath, the veins very slender, once or twice forked, the 

 veinlets closely parallel, spreading, ending short of the margin; 

 sori on upper two-thirds of blade, linear, paired, straight, 

 spreading, parallel; indusia membranous, 7-25 mm. long, the 



pairs overlapping while young. Shaded slopes and rocks in 



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



Kuriles, Sakhalin, Caucasus and Asia Minor to Europe, and 

 N. America. 



23. Asplenium antiquum Makino. Thamnopteris an- 

 tiqua (Makino) Makino; Neottopteris antiqua, (Makino) 

 Masam.; A. nidus L. forma intermedia Mett., pro parte; A. 

 nidus sensu auct. Japon., non L.; 'Neottopteris rigida Fee var. 



erubesce?is Nakai Tani-wataki, O-tani-wataei. Rhizomes 



short, erect; fronds tufted, obliquely spreading; blades 

 coriaceous, lustrous, vivid-green, scarcely paler beneath, simple, 

 linear-oblanceolate, 70-100 cm. long, 7-10(-12) cm. wide, en- 

 tire or nearly so, abruptly acute to short-acuminate, or grad- 

 ually narrowed at both ends, somewhat decurrent on the 

 short stipe, scaly beneath while very young; stipes very short to 

 nearly obsolete, winged in upper portion, the scales at base 

 firmly membranous, gray-brown, linear-lanceolate, 2-2.5 cm. 

 long, 3-5 mm. wide, acuminate, loosely toothed on margin 

 toward tip; costa rather stout, flat on upper side, raised and 

 obtuse beneath, often brownish toward base, the veins often 

 once forked near base, spreading, straight, close, connected 

 with a marginal vein; sori occupying nearly the whole length 

 of the veinlets on upper half of the fronds; indusia entire, 



about 0.7 mm. wide. Tree-trunks; Honshu (Hachijo Isl. 



and Kii Prov.), Shikoku, Kyushu. Ryukyus to Formosa. 



2. CAMPTOSORUS Link Kumo-no-su-shida Zoku 



Terrestrial; rhizomes short; scales linear, attenuate, cladirate; blades herbaceous, simple, lanceolate to linear, gradually pro- 

 longed and gemmate at the tip, cordate to cuneate or acute at base, glabrous; veins forking and freely anastomosing; sori rather 

 irregularly disposed. Two species, 1 in N. America, the other in e. Asia. 



1. Camptosorus sibiricus Rupr. Scolopendrium sibiri- 

 cum (Rupr.) Hook.; Phyllitis sibirica (Rupr.) O. Kuntze; 

 Asplenium ruprechtii Kurata ^Kumo-no-su-shida. Rhi- 

 zomes small, short-ascending to erect, the scales brown, nar- 

 rowly lanceolate, about 3 mm. long, acuminate, usually entire; 

 fronds evergreen, glabrous; stipes slender, I-IO cm. long, pale 

 green, the larger ones usually purple-brown and lustrous on 

 lower half, naked except for a few small basal scales; blades 

 linear to linear-lanceolate, 5-15 cm. long, 5-10 mm. wide, 

 long-tapering and usually rooting at the tip, usually cuneate 

 at base, undulate to obsoletely crenate, the small sterile blades 



usually elliptic, 7-30 mm. long, rounded to acuminate, usually 

 long-stipitate, costas raised beneath, the veins slender, scarcely 

 visible on either side, once to thrice forked, ascending, the 

 veinlets not reaching the margin, partially anastomosing and 

 forming areolae in a few irregular rows along the costa; sori 

 linear to oblong, ascending to spreading, 1-5 mm. long, the 

 longer ones mostly along the costa; indusia entire, membra- 

 nous, straight or slightly recurved. Calcareous rocks; Hok- 

 kaido, Honshu, Shikoku, Kyushu. Korea, Manchuria, n. 



China to s. Siberia. 



Fam. 20. POLYPODIACEAE Uraboshi Ka Polypody Family 



Mostly epiphytic, rarely terrestrial; rhizomes creeping or sometimes ascending, dictyostelic, scaly, the scales usually broad 

 and peltate, very rarely bristlelike or hairlike; fronds usually jointed at base of stipe, simple to pinnate, with free or reticulate 



venation; sori exindusiate, typically round, sometimes elongate along the veins. About 65 genera, with about 1,000 species, 



abundant in the Tropics. 



lA. Rhizomes hairy; fronds dimorphic; fertile blades much narrower than the sterile; paraphyses capitate 1. Cheiropleuria 



IB. Rhizomes scaly. 

 2A. Veins anastomosing, or if not the blades more than 2 cm. wide. 



3A. Fronds usually dimorphic, with stellate scales 7. Pyrrosia 



3B. Fronds usually all alike, the scales not stellate. 



4A. Veins free, or if anastomosing the areolae with a simple ascending veinlet, or the veinlet absent; paraphyses none or filamentous, 

 rarely clathrate or stellate. 



5A. Blades pinnatifid or compound, scarcely fleshy; sori round 2. Polypodium 



5B. Blades simple, entire, fleshy; sori elongate 13. Loxogramme 



4B. Veins anastomosing, with variously directed or branched veinlets in the areolae. 

 6A. Paraphyses peltate. 



7A. Fronds strongly dimorphic, the sterile elliptic to ovate or obovate, the fertile linear to oblanceolate 5. Lemmaphyllum 



7B. Fronds all alike (somewhat dimorphic in Crypsinus). 



