40 



Pteridaceae 



Prov.), Shikoku, Kyushu; rare. Formosa and widespread 



in tropical Asia. 



2. Lindsaea japonica (Bak.) Bak. ex Diels. L. cultrata 

 var. japonica Bak. Saigoku-hongu-shida. Fronds ever- 

 green, small; rhizomes creeping, 1-1.5 mm. across, with sparse, 

 dark brown, linear-lanceolate scales about 1 nun. long; stipes 

 1-8 cm. long, dark purple-brown, few-scaled at base, not or 

 scarcely lustrous, sulcate on upper side; blades lanceolate, 3-10 

 cm. long, 1.5-2 cm. wide, acute, glabrous, pinnate, the rachis 

 pale green, sulcate on upper side, rounded on back; pinnae 

 7-12 pairs, the lower ones spreading, the upper ones ascend- 

 ing, broadly subovate or broadly subelliptic, 6-12 mm. long, 

 3-6 mm. wide, rounded to obtuse, broadly cuneate or rarely 

 subtruncate at base on anterior side, nearly truncate (crenate- 

 toothed in the sterile pinnae) on anterior margin, the posterior 

 margin entire, straight in lower half, incurved on upper half; 

 sori on the anterior margin of pinnae, straight, usually contin- 

 uous; indusia nearly entire, reaching the edge of the pinnae. 



Wet shaded rocks along streams in mountains; Honshu 



(Hachijo Isl. and Kii Prov.), Kyushu; rare. Ryukyus, For- 

 mosa, Korea (Quelpaert Isl.). 



3. Lindsaea orbiculata (Lam.) Mett. var. chienii 

 (Ching) Ohwi. L. chienii Ching; L. tenera var. chienii 

 (Ching) C. Chr. & Tard.-BL; L. orbiculata sensu auct. Japon., 



non Mett.; L. commixta Tagawa ^Edauchi-hongu-shida. 



Fronds glabrous, evergreen; rhizomes short, creeping or as- 

 cending, firm, densely leafy, while young with red-brown lus- 



trous linear-lanceolate scales about 1.5 mm. long; stipes 2-20 

 cm. long, dark purple-brown, lustrous, 4-angled, smooth, 

 sparsely scaly at the base; blades broadly lanceolate, simply 

 pinnate, 8-20 cm. long, 2-3 cm. wide, or bipinnate and nar- 

 rowly triangular, 5-12 cm. wide, gradually acuminate in 

 larger fronds, the rachis 4-angled, lustrous, pale green or often 

 purple-brown beneath on lower half; pinnules chartaceous- 

 herbaceous, elliptic, squarrose or ovate, 8-20 (-25) mm. long, 

 4-10 (-13) mm. wide, oblique, rounded to very obtuse, broadly 

 cuneate at base, short-petiolulate, entire and nearly at right 

 angles to the axis on the lower margin, acutely toothed and/or 

 lobulate toward the tip, palmately veined; sori usually inter- 

 rupted, short; indusia narrow, marginal. Honshu (Izu Pen. 



and Izu Isls. through Tokaido to s. Kinki Distr.), Shikoku, 

 Kyushu; rather rare. Ryukyus, Formosa, China, and Indo- 

 china. Polymorphic. 



Var. deltoidea Wu. L. chienii var. deltoidea (Wu) Ta- 

 gawa Edauchi-hongu-shida-modoki. Terminal pinna 



elongate-rhombic, lobulate, large. Honshu (Kii Prov.), 



Kyushu. Ryukyus, Formosa, and China. 



4. Lindsaea simulans Ching. L. orbiculata var. orbicu- 

 lata sensu Ohwi Uchiwa-hongu-shida. Blades simply 



pinnate, gradually narrowed at the tip to a single obtuse small 

 segment; pinnae scarcely lobulate, paler beneath, the lower 

 pinnae flabellate, nearly equilateral, truncate at base; sori con- 

 tinuous. Shikoku (Tosa Prov.), Kyushu (Yakushima); 



rere. China. Closely allied to the preceding. 



5. SPHENOMERIS Maxon Hora-shinobu Zoku 



Terrestrial; rhizomes creeping, with dark brown narrow hairlike scales; fronds erect, glabrous, pinnately compound; pinnules 

 usually cuneate at base; sori submarginal, terminating the veinlets, solitary or in pairs, sometimes in threes, usually united; vein- 

 lets free; indusia fixed by the base and sides. About 20 species, in the Tropics. 



1. Sphenomeris chinensis (L.) Maxon. Trichomanes 

 chinense L.; Davallia chinensis (L.) Smith; Stenoloma chi- 

 nense (L.) Bedd.; Odontosoria chinensis (L.) J. Smith; 

 Lindsaea chinensis (L.) Mett.; D. tenuifolia var. chinensis (L.) 

 Moore; Adiantum chusanum L.; Sphenomeris chusana (L.) 

 Copel.; Stenoloma chusanum (L.) Ching; O. chinensis var. 

 tenuifolia Matsum., excl. syn.; O. chusana var. tenuifolia 

 Masam., excl. syn.; D. tenuifolia sensu auct. Japon., non Sw.; 

 Stenoloma gracile Tagawa Hora-shinobu. Fronds ever- 

 green, glabrous, often somewhat brownish red; rhizomes short- 

 creeping, densely leafy; fronds 10-80 cm. long, tufted; stipes 

 4-30 cm. long, pale brown, smooth, scaly at base; blades 

 smooth, ovate to broadly lanceolate, 5-50 cm. long, 3-20 cm. 

 wide, acute to acuminate, slightly or not contracted at base, 

 3- or 4-pinnate, the rachis sulcate on upper side; pinnae nar- 

 rowly ovate to broadly lanceolate, more or less 3-angled, usu- 



ally narrowed at tip, petiolulate; ultimate segments coriaceous 

 to thick-herbaceous, 3-4 mm. long, 2-3 mm. wide at the trun- 

 cate and few-toothed broad tip, cuneate at base; veins not 

 prominent, once or twice forked; sori marginal, 1 to 3 on the 

 ultimate pinnules; indusia cup-shaped, depressed, often par- 

 tially united. Sunny exposed rocks and roadsides in low 



mountains and hills; Honshu (Kanto Distr. and westw.), Shi- 

 koku, Kyushu; common. Ryukyus, Formosa, China to 



India, Polynesia, and Madagascar. 



Var. Httorale (Tagawa) Ohwi. Stenoloma bifiorum 

 (Kaulf.) Ching; Davallia biflora Kaulf.; Sphenomeris biflora 

 (Kaulf.) Tagawa; S. Httorale Tagawa; S. chusanum var. Ht- 

 torale (Tagawa) H. Ito Hama-hora-shinobu. Rhizomes 



with longer and broader scales; blades thickly coriaceous, ovate 



to broadly so. Along the sea; Honshu (Shimosa Prov. and 



westw.), Shikoku, Kyushu. Ryukyus to the Philippines. 



6. HYPOLEPIS Bernh. Iwa-hime-warabi Zoku 



Terrestrial; fronds moderately large; rhizomes creeping, solenostelic, usually with reddish hairs; fronds herbaceous, compound 

 or decompound, hairy or glabrous; veins free; sori usually nearly marginal, protected by a reflexed tooth, rarely inframarginal 

 and naked. Pantropic, with about 45 species, north to Japan, south to New Zealand and South Africa. 



1. Hypolepis punctata (Thunb.) Mett. Polypodium 

 punctatum Thunb.; Phegopteris punctata (Thunb.) Mett.; 

 Nephrodium punctatum (Thunb.) Diels; Dryopteris punctata 



(Thunb.) C. Chr., non O. Kuntze Iwa-hime-warabi. 



Fronds deciduous, large, more or less pilose; rhizomes long- 

 creeping, remotely leaved, with red-brown jointed callose flex- 



uous short hairs; stipes 10-60 cm. long, sulcate on upper side, 

 yellow-brown, dull, 2.5-4 mm. across, scabrous; blades deltoid- 

 ovate to oblong, 20-120 cm. long, 16-60 cm. wide, acuminate, 

 3- or 4-pinnate, the pilose indument jointed, callose at the base; 

 pinnae broadly lanceolate to oblong-ovate, acuminate, short- 

 petiolate, spreading, the lower 2 or 3 pairs larger, 13-35 cm. 



