100 



POLYPODIACEAE 



toward base; blades firmly chartaceous, lanceolate to broadly 

 so, 25-40 cm. long, 4-7 cm. wide, usually broadest below the 

 middle, acuminate, narrowed at base, decurrent on the stipe, 

 subentire, undulate or rarely irregularly lobed, with ap- 

 pressed small scales beneath and on costas above; costas raised 

 on both sides, the veins 20-30 pairs, obliquely spreading, 

 slender, slightly flexuous, the veinlets scarcely distinct; sori in 

 a single series on each side of the costas, often also scattered, 

 round, sometimes elliptic, 3-5 mm. across, covered while 



young with numerous small peltate paraphyses. Shaded 



places and on moist rocks in mountains; Honshu, Shikoku, 

 Kyushu. Korea, Ryukyus, and Formosa. 



Var. platyphylla Tagawa. N. ensata var. phyllomanes Ta- 



gawa, excl. basionym Hiroha-kuriha-ran. Blades larger, 



6-9 cm. wide; sori close to the lateral veins. Honshu (Suwo 



Prov.) . Ryukyus. 



2. Neocheiropteris subhastata (Bak.) Tagawa. Poly- 



podium subhastatum Bak.; Microsorium subhastatum (Bak.) 

 Ching; P. subhastatum var. longifrons Takeda; M. subhastatum 

 var. longifrons (Takeda) Ching ^Yanone-shida. Rhi- 



zomes slender, long-creeping, wiry, 2-3 mm. across, the scales 

 membranous, spreading, more or less lustrous, lanceolate, 2.5-4 

 mm. long, acuminate, sparsely denticulate, clathrate; fronds 

 remote; stipes 2-6 cm. long; blades thinly chartaceous, broadly 

 linear to deltoid-lanceolate, 10-15 (-20) cm. long, 1.5-5 cm. 

 wide, acuminate, usually with an obtuse angle on both sides 

 at base, abruptly decurrent on the short stipe, subentire to 

 undulate, often sinuately lobulate on lower margin, nearly 

 glabrous on both sides; costa raised on both sides, the veins 

 and veinlets not distinct; sori round, or sometimes oblong, 

 about 2 mm. across, with peltate paraphyses while very young. 



Honshu (Kazusa and Izu Prov. and westw.), Shikoku, 



Kyushu. China. 



5. LEMMAPHYLLUM Presl Mamezuta Zoku 



Epiphytic; rhizomes long-creeping, the scales ovate-lanceolate, entire or short-ciliate; fronds dimorphic, jointed on the 

 rhizomes; sterile blades obovate to ovate or elliptic, entire, somewhat fleshy, usually glabrous or nearly so; veins reticulate; fertile 

 blades linear or oblanceolate; sporangia mosdy in continuous coenosori, these not confluent around the apex; paraphyses peltate, 

 clathrate. About 4 species, Japan to the Himalayas. 



lA. Fronds 1-3 cm. long; sori elongate along the costas 1. L. microphyllum 



IB. Fronds 3-5 cm. long; sori round to ovate, remote, the upper ones often nearly confluent 2. L. pyrijorme 



1. Lemmaphyllum microphyllum Presl. Taenitis mi- 

 crophylla (Presl) Mett.; Drymoglossum microphyllum (Presl) 

 C. Chr.; D. carnosum var. minor Hook.; D. nobu\oanum 



Makino; D. carnosum sensu auct. Japon., non J. Sm. 



Mamezuta. Evergreen; rhizomes long-creeping, filiform, 

 0.7-1 mm. across, fronds remote, the scales rather sparse, dark 

 brown, spreading, hnear-filiform, 1-1.5 mm. long; blades 

 coriaceous, orbicular to elliptic or broadly ovate to obovate, 1-2 

 cm. long, 6-15 mm. wide, rounded to very obtuse, rounded 

 to broadly cuneate at base, glabrous, entire, the stipes 2-8 

 mm. long; costa slighdy raised beneath in lower half, the 

 veins and veinlets invisible; fertile blades broadly linear to 

 narrowly oblanceolate, 1-3 cm. long, 3-4 mm. wide, obtuse to 

 rounded, gradually narrowed at base, the stipes 1-3 cm. long; 

 costa raised beneath and in lower half of upper side; sori 

 elongate along the costas and covering the entire blade be- 

 neath, with numerous minute peltate paraphyses while young. 



Rocks and tree trunks in lowlands and low mountains; 



Honshu, Shikoku, Kyushu; common. ^Korea, Ryukyus, 



and Formosa. 



2. Lemmaphyllum pyrifonne (Ching) Ching. Polypo- 

 dium pyrijorme Ching Oni-mamezuta. Rhizomes long- 

 creeping, very slender, scarcely 1 mm. across, loosely scaly to 

 nearly naked, the scales brown, broadly ovate, entire, abruptly 

 caudate-acuminate; fronds dimorphic; sterile blades ovate to 

 pyriform in outline, 2-4 cm. long, 1.5-3 cm. wide, glabrous, 

 the stipe 5-10 mm. long; fertile blades firmly coriaceous. 

 Ungulate-lanceolate, 3-5 cm. long, 5-10 mm. wide, sometimes 

 similar to the sterile, subacuminate, gradually attenuate at 

 base, very slightly recurved on margin, the stipes 2-3 cm. long; 

 sori in 2 rows on the blade, round to ovate, remote, the upper 

 ones often nearly confluent, medial. Epiphytic on tree- 

 trunks; Kyushu (Yakushima). China. 



6. DRYMOTAENIUM Makino Kuragari-shida Zoku 



Evergreen, epiphytic on tree trunks; rhizomes short-creeping, dictyostelic, with black lanceolate acuminate scales; fronds 

 approximate, all alike, jointed at base, narrowly linear, glabrous, coriaceous; veins concealed, anastomosing to form one or two 

 rows of areolae, these with a few included veinlets; sori continuous in a groove on each side of costa, uninterrupted, paraphyses 

 peltate, clathrate. A single species. 



rowed to a short obtuse apex, gradually narrowed to a short 

 stipelike base about 2 mm. across, glabrous, entire, with a 

 rounded margin, 1-grooved above, with a raised obtuse promi- 

 nent costa beneath, the veins hidden, anastomosing; sori con- 

 tinuous, in an elongate line along the costa, covered with small 

 peltate paraphyses while very young. Tree trunks in moun- 

 tains; Honshu (Mikawa and Hida Prov. and westw.), Shikoku; 

 rare. Formosa, China. 



1. Drymotaenium miyoshianum (Makino) Makino. 

 Taenitis miyoshiana Makino; Pleurogramma robusta Christ; 



Monogramma robusta (Christ) C. Chr. Kuragari-shida. 



Rhizomes creeping, about 2.5 mm. across, densely scaly, the 

 scales membranous, deltoid-lanceolate to narrowly deltoid-ovate, 

 2.5-4 mm. long, about 1 mm. wide, acuminate, slightly cordate 

 at base, minutely toothed, clathrate, with translucent, elliptic 

 cells and dark brown cell walls; fronds tufted, simple, fleshy, 

 elongate, narrowly linear, 25-50 cm. long, 3-4 mm. wide, nar- 



