Thelypteris ASPIDIACEAE CydosoruS 



anterior vein runs to the callus between the contiguous segments. China, Japan, 

 Korea; locally in An., Ki. At water's edge along streams. 



4. Thelypteris glanduligera (Kunze) Ching (Lastrea grocilescens Hook. var. glan- 

 duligera Kunze) (Bd. F. Suppl. 51). 25-55 cm. tall; fr. IV-XI; sori marginal. 

 China, Japan, Korea, Formosa; locally in An., Che., Ki., Ku. Wooded hillsides. 



5. Thelypteris japonica (Baker) Ching (Dryopteris japonica (Baker) C. Chr.) (Mak. 

 F. 948). 80-100 cm. tall; fr. VII-XI; sori medial. China, Japan, Korea; locally in 

 Ki. Mountain ravines. 



6. Thelypteris laxa (Fr. & Sav.) Ching (Fa. B. 6:333). 25-45 cm. tall; fr. V-X; sori 

 medial. China, Japan, Korea; locally in An., Ki., Ku. Wooded hillsides. 



7. Thelypteris chinensis Ching (Fa. B. 6:311). 1 m. tall; 6-8 veins per segment. 

 China; locally in An. Shaded rocky cliffs. 



8. Thelypteris uliginosa (Kunze) Ching South China Wood Fern (DeV. F. 63). 

 1 m. tall; fr. VI-XI; exindusiate. Asia, Australia; locally in Ku. Cultivated. 



9. Thelypteris oligophlebia (Baker) Ching Kuling Wood Fern (Fa. B. 6:339). 1 m. 

 tall; fr. VI-XI; indusia glabrous. China, Japan, Korea; locally in An., Che., Ki., 

 Ku. Wooded hillsides, streambanks. 



10. Thelypteris hattorii (H. Ito) Tagawa (T. nemoralis Ching) (Fa. B. 6: 338; Ito 

 141). 35-65 cm. tall; fr. VII-IX; indusia pubescent. China, Japan; locally in An., 

 Ki. Wooded hillsides. 



2. Leptogramma J. Sm. MMS (Chi Chiieh Shu; Stream Fern Genus) 



Small ferns of mountain streams, 20-40 cm. tall: leaves tufted, bipinnatifid, her- 

 baceous, hirsute throughout; veins pinnately forked, free: sori exindusiate, oblong or 

 linear, along the veins, hirsute. 6 species. 

 1. Leptog-ramma scallanii (Christ) Ching (Si. 7:101). 20-35 cm. tall; fr. VII-IX; 



lower pinnae petiolate. China, Tonkin; locally in Ki. In mountain streams. 



3. Hypodematium Kunze SIMMS (Chung Tsu Chiieh Shu; 

 Swollen-foot Fern Genus) 



Rhizome slender, creeping in crevices or dry rocky limestone cliffs or brick walls; 

 base of stipe swollen and covered with imbricating bright rufo-brown lanceolate scales', 

 blade not scaly except at base of stipe; leaves approximate, deltoid, pubescent on both 

 surfaces; basal pinnae largest; venation free: sori dorsal on veins: indusium membran- 

 ous, reniform, pubescent; margin ciliate. 3 species. 

 1. Hypodematium crenatum (Forsk.) Kuhn (Bd. F. Suppl. 18). 8-45 cm. tall; fr. 

 V-XI; leaves deltoid. Asia, Africa; locally in An., Ku. Crevices of brick walls. 



4. Cyclosorus (Link) C. Chr. ^MM (Mao Chiieh Shu; Hairy Fern Genus) 

 A genus of the dryopteroid group differing from Thelypteris in having the loiver 

 pair or pairs of veins uniting and sending an excurrent vein to the sinus: sori round; 

 sporangia glabrous; indusium persistent: blades similar to Thelypteris in usually not 

 having scales on stipe or rachis and having soft and simple pubescence on the under 

 side along the veins; under surface often glandular; laminae bipinnatifid to bipinnate. 

 200 species. (Greek, meaning round sori.) 



Key to the Species 



Base of pinnae narrowed; only 1 or 1 1/2 pairs of veins uniting 1 . C. gongylodes 



Base ot pinnae not narrowed. 



48 



