Coniogramnie GYMNOGRAMMACEAE-ASPLENIACEAE Vittaria 



Key to the Species 



Veins anastomosing 1 . C. japonica 



Veins free 2. C. intermedia 



1. Coniog-ramme japonica (Thunb.) Diels (Gymnogramma japonica (Thunb.) Desv.) 

 Bamboo Fern (H. S. F. 390). 45-100 cm. tall; fr. VII-X; leaves pinnate above, 

 bipinnate below. China, Japan, Formosa; locally in An., Che., Ki., Ku. Wooded 

 hillsides. 



2. Coniogramme intermedia Hieron. (Ching 3:143). 40-100 cm. tall; fr. VII-X; 

 distinguished by free venation. China, Japan, India; locally in Ki. Wooded hill- 

 sides. Fig. 18. 



19. VITTARIACEAE Presl Mffifflft (Shu Tai Chiieh K'o) 



Epiphytic or petrophilous grass-like ferns, or in some genera very small and moss- 

 like: rhizome creeping, covered with clathrate scales: roots very hairy: leaves simple, 

 usually linear, sessile or substipitate; midrib usually distinct; lateral veins absent, 

 simple, or reticulate and without included veinlets; epidermis with idioblasts (spicular 

 cells): sori elongate, along the marginal veins, exindusiate: prothallia elongate, not 

 cordate. 9 genera. 



1. Vittaria J. Sm. flf^jtiii (Shu Tai Chiieh Shu; Bookmark Fern Genus) 



Epiphytic or petrophilous ferns: rhizomes short, creeping, covered with narrow 

 clathrate scales: roots covered with soft brown hairs: leaves tufted, narrowly linear, 

 entire, grass-like; midrib usually distinct: sori continuous, marginal or intramarginal, 

 often immersed in a groove: leaf margin often recurved. 80 species. 



Key to the Species 



Inner edge of soral groove prominently raised 1. V. flexuosa 



Inner edge absent or rudimentary. 



Leaves 2-3 mm. broad 2. V. filipes 



Leaves 5-7 mm. broad 3. V. japonica 



1. Vittaria flexuosa Fee (DeV. F. 117). 10-40 cm. tall; fr. VII- VIII; 4-9 mm. broad. 

 China, Japan, Siam, Himalaya; locally in Ki. Rocky ledges by streams. Fig. 19. 



2. Vittaria filipes Christ (DeV. F. 118). 5-15 cm. tall; fr. VII- VIII; 2-3 mm. broad. 

 China; locally in Ki. Rocky cliffs by streams. 



3. Vittaria japonica Miq. (DeV. F. 118). Up to 40cm. tall; fr. VII-X; 6-7 mm. 

 broad. China, Japan, Formosa, Korea; locally in Ki. Rocky ledges by streams. 



20. ASPLENIACEAE Gray tfcfaffl& (T'ieh Koh Chiieh K'o) 

 Terrestrial or petrophilous ferns: rhizome creeping or erect, scaly: leaves simple, 

 pinnate, or pinnately decompound; veins usually free: sori oblong to linear, attached 

 to the oblique veinlets, borne on one or both sides of the veinlet; indusia usually 

 present, sometimes fugacious, single or doubled, or curved and crossing the vein. 21 

 genera. 



Key to the Genera 



a. Sori exindusiate 4. Cornopteris 



aa. Sori with indusia (sometimes fugacious). 



Sori often doubled (back to back) 3. Diplazium 



38 



