_ ORYPTOGAMIA FILICES. 
ivads anaes Pinnetifid, or more or less numerously 
compounded. 
Spectres. 1. P. vulgare. 2. virginianum. « 3. incanum. 
Pluk. Phyt. t. 289. f. 1. 4.hewagonopterum. 5. “aad 
So . Ea 
828. -WOODSIA. R. Brown. 
_ Sori roundish, scattered. Indusium caliciform, 
“open, with acrinite margin, including the pedi- 
cellate capsules. 
Habit that of the preceding genus. 
Specres. 1. hyperborea. 2.ilvensis. Both species : 
; indigenous to Europe. . 
19. ASPIDIUM. Swartz. (Shield-fern.) 
_ “Seri roundish, scattered. Indusium umbili- 
ele or opening on one side. ‘ 
: Srrcigs. 1. A. cicutarium. 2. acrostichoides. 3. novebo- 
vacense. 4, Thelypteris. §.cristatum. 6. obtusum. 7. acu- 
‘leatum. 8. marginale. “9. Pilixe mas. 10. intermedium. 11. 
- 12; dilatatum. 13. Gulbiferum. 14. asplenioides. 
15. Pikx ‘femina. 716. angustum. 17. punctilobum, 1%. ato~ 
= - marium. 19. tenue. 20. rufidulum. 
320. ONOCLEA. L. (Sensitive Fern.) 
_ Capsules Sonschy. covering the back of the 
frond. Indusia squamiform, connate in the 
form of berries and not expanding. 
Sterile fronds b deeply Pinnatifid, fertile ones bipinnately 
Spectes. 1. O. 38 it dantbbabah North 
_ American genus. 
ae 
21. STRUTHIOPTERIS. Willd. 
Capsules densely covering the back of the 
Indusia potsge-ewienthy ‘' jinal, Seite 
