Dryopteris ASPIDIACEAE Dryopteris 



Lamina bipinnatifid; stipe scales light brown. 4. D. panda 

 Lamina bipinnate; stipe and rachis densely 



scaly; scales reddish brown 13. D. championii 



ff. With bullate scales on underside. 



Scales on stipe few, entire, narrow, dark 



brown 12. D. erythrosora 



Scales abundant. 



Bullate scales abundant; stipe and rachis 



scales dark brown, entire 11 . D. fuscipes 



Bullate scales few, small; stipe and rachis 



scales reddish-brown, fimbriate 13. D. championii 



dd. Lamina tripinnatifid to decompound. 



g. With bullate scales on under-surface. 



Texture coarse: stipe and rachis densely scaly; 



scales of various colors, light brown to black. 14. D. varia 

 Texture thin: scales few; lamina anadromous. . . . 15. D. miqueliana 

 gg. Without bullate scales beneath. 



Stipe castaneous, at least at base 8. D. sparsa 



Stipe stramineous. 



Without scales, except at base of stipe 7. D. gymnophylla 



Stipe and rachis with small scales 9. D. chinensis 



Two species of Athyrium^*^ which closely resemble Dryopteris are placed in this key to 

 help in their identification. 



1. Dryopteris sieboldii (van Houtt.) Ktze. (Nephrodium sieboldii (van Houtt.) Hook.) 

 (H. S. F. 261). 60-80 cm. tall; fr. IV-X; lvs. with a terminal pinna, and 1 to 3 

 prs. of lateral pinnae. China, Japan; locally in Che., Ki. Wooded ravines. 



2. Dryopteris cycadina (Fr. & Sav.) C. Chr. (DeV. F. 69). 30-80 cm. tall; fr. V- 

 XI; pinnae to 12 cm. long. Asia; locally in An., Che., Ki., Ku. Wooded hillsides. 



3. Dryopteris dickinsii (Fr. & Sav.) C. Chr. (DeV. F. 69). 30-45 cm. tall; fr. VI- 

 X; pinnae 6 to 8cm. long. China, Japan; locally in An., Ki. Wooded hillsides. 



4. Dryopteris panda (Clarke) Christ (Fa. B. 8:418). 20-50 cm. tall; fr. VI-IX; pin- 

 nules crenate; indusia large. Asia; locally in Ki. Dripping rocky caves. 



5. Dryopteris lacera (Thunb.) Ktze. {Nephrodium lacerum (Thunb.) Baker) (H. S. 

 F. 273). 30-65 cm. tall; fr. V-XI; base of stipe with larger linear brown scales. 

 East Asia; locally in An., Ki. Exposed hillsides. Fig. 26. 



6. Dryopteris uniformis Mak. (Mak. F. 953). 35-60 cm. tall; fr. V-XI; scales black 

 on stipe. East Asia; locally in An., Ki., Ku. Wooded hillsides. 



7. Dryopteris gymnophylla (Baker) C. Chr. (Fa. B. 8:468). 35-55 cm. tall; fr. VI- 

 XI; first pinnule on basal pinna largest. China; locally in Ki., Ku. Wooded 

 ravines. 



8. Dryopteris sparsa (Ham.) Ktze. (Nephrodium sparsum (Ham.) Don) (H. S. F. 276). 

 30-80 cm. tall; fr. V-XI; lamina much longer than broad. Asia; locally in An., 

 Che., Ki., Ku. Woods. 



9. Dryopteris chinensis (Baker) Koidz. (Nephrodium chinense Baker) (H. S. F. 278). 

 18-36 cm. tall; fr. V-X; basal pinna largest. East Asia; locally in An., Ki., Ku. 

 Wooded hillsides. 



10. Dryopteris decipiens (Hook.) Ktze. (Nephrodium decipiens Hook.) (H.S.F. 260). 

 30-50 cm. tall; fr. VI-X; scales on stipe glossy, purplish brown. China, Japan; 

 locally in An., Ki. Wooded hillsides. 



11. Dryopteris fuscipes C. Chr. (Fa. B. 8:476). 30-80 cm. tall; fr. IV-XI; first pinnule 



51 



