Onychiurrt PTERIDACEAE-GYMNOGRAMMACEAE Coniogramme 



the sterile more finely dissected than the fertile; stipes long, without scales; fertile 

 segments narrow, elliptical; veins free: sori marginal on a linear receptacle that 

 connects the tips of the veins; indusium membranous, formed by the reflexed leaf 

 margin, nearly broad enough to meet at the costa. 10 species. (From the Greek term 

 meaning "claw"; referring to the shape of the ultimate segments.) 

 1. Onychium japonicum (Thunb.) Kunze Japanese Claw Fern (H. S. F. 143). 25-80 



cm. tall; fr. IV-XII; segments 1mm. broad. China, Japan, Korea, Philippines, 



Java; locally in An., Che., Ki., Ku. Stone walls. Fig. 16. 



8. Adiantum Linn. Maidenhair Fern $£Hj#;I| (T'ieh Hsien Chiieh Shu; 



Iron Wire Fern Genus) 



Graceful ferns of rocky hillsides, woods and ravines: rhizomes usually creeping; 

 stipes and rachis slender, rigid, glossy, usually dark colored; leaves usually pinnately 

 or palmately compound; pinnules broad, dimidiate oblong or fan-shaped: sori marginal, 

 distinct, at the ends of free forking veins; sporangia borne on the reflexed lobes, 

 226 species. (The ancient name, meaning " unwetted "; the foliage shedding rain-drops.) 



Key to the Species 



a. Leaves pinnate 1 . A. caudatum 



aa. Leaves bipinnate. 



Rachis and rachillae covered with stiff rufous hairs 2. A. formosum 



Rachis and rachillae without hairs; pinnules cuneate. 



Sori borne on margin of leaf lobes; indusium oblong 3. A. capillus-veneris 



Sori borne in deep notches of the lobes; indusium 



renif orm 4 . A. cuneatum 



1. Adiantum caudatum Linn. Pinnate Maidenhair Fern (Bd. F. 83). 15-30 cm. tall; 

 fr. VII-XII; lamina rooting at apex. Asia, Africa; locally in Ku. Cultivated. 



2. Adiantum formosum R. Br. Scabrid Maidenhair Fern (H. S. F. 119). 30-60 cm. 

 tall; fr. VII-XII; pinnae rhombic. Australia, New Zealand; locally in Ku. Culti- 

 vated. 



3. Adiantum capillus-veneris Linn. Venus-hair Fern (H. S. F. 123). 10-40 cm. tall; 

 fr. V-XI; scales linear, only borne at base of stipe. Cosmopolitan; locally in An., 

 Che., Ki. Rocky cliffs. Fig. 17. 



4. Adiantum cuneatum Langsd. & Fisch. Common Maidenhair Fern (H. S. F. 124). 

 25-50 cm. tall; fr. I-XII; scales ovate, lanceolate, borne on base of stipe and up 

 about 1cm. South America; locally in Che., Ku. Widely cultivated. 



18. GYMNOGRAMMACEAE Ching MT^^f (Feng Liao Ts'ao K'o) 



Terrestrial or petrophilous ferns: rhizome creeping, usually short, covered with 

 hairs or scales ; stipe not articulate to rhizome ; leaves usually pinnate, rarely simple 

 or decompound; veins free, or if reticulate, without included veinlets: sori linear, 

 following the free or reticulate veins, exindusiate. 17 genera. 



1. Coniogramme Fee Jf,7J i rn (Feng Liao Ts'ao Shu; Phoenix Grass Genus) 



Large terrestrial ferns: rhizomes widely creeping, scaly: leaves pinnate to tripinnate, 

 usually glabrous; pinnae large, thin; margins entire or serrulate; veins free or reticulate, 

 ending in hydathodes: sori linear, exindusiate, following the veins from midrib to near 

 the margin. 20 species. (From the Greek, meaning " a dust line "; since the sporangia 

 occur in lines like dust.) 



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