IOWA ACADEMY OF SCIENCES 27 
Camptosoeus. 
9. C. rJiizophyllus (L.) Link. Scarce on rocks. 
Deyoptekis. 
10. D. tJielypteris (L.) A. Gray. 
11. D. cristata (L.) A. Gray. Rare. 
12. D. goldieana (Hook) A. Gray. Plenty. 
13. D. spinulosa (Retz) Kuntze. Rare. 
Fmx. 
14. F. hulMfera (L.) Underw. Plenty in woods. 
15. F. fragilis (L.) Underw. Abundant in woods. 
WOODSIA. j 
16. W. ilvensus (L.) R. B. Very rare. 
17. W. oMusa (Spreng) Torr. Abundant in woods. 
MATEUCCIAw 
18. ilf. struthiopteris (L.) Todaro. Plenty. iOnoclca ^ strut Mop- 
teris (L.) Hoffm.] 
Onoclea. 
19. O. sensihilis L. Scarce. 
: i: 
ORDER EQUISETALES 
I 
EQUISETACEAE. 
Bqutsetum. 
20. E. arvense L. 
21. E. pratense Erbr. 
22. E. sylvaticum. 
23. E. fluviatile L. 
24. E. rohustum A. Br, 
25. E. Jiyemale L. 
26. E. laevigatum A. Br. 
SUBKINGDOM SPERMATOPHYTA. 
CLASS I GYMNOSPERMAE. ‘ 
pinaceae. 
JUNIPEEUS. 
27. J. virginiana L. Almost extinct; formerly plenty. 
CLASS II ANGIOSPERMAE. 
TYPHACEAE 
Typha. 
28. T. latifolia L. Common in swamps and marshes. 
SPAEGANIACEAE. 
Spaeganium. ' 
29. S. eurycarpum Engelm. Common in swamps. 
30. S. androcladum (Engelm) Morong. Rare. 
31 . 8. simplex Huds. Scarce. 
