IOWA ACADEMY OF SCIENCES. 157 



7. Dicramon scoparlum Hedw. Common on low, sandy- 

 ground, in shaded places. Johnson county, October 10, 1896, 

 T. E. S.: Muscatine county, November 8, 1897, Professor Shimek: 

 Delaware county, September, iS97, J. E. Cameron. 



8. Fissidens jitinutulus Sulliv. Very rare; found only in the 

 deep ravines at Wildcat Den; on sandstone rocks near the 

 water. Muscatine county, November In, 1897, Shimek' d- Savage. 



9. Fissidens taxifolius Hedw. On damp, shaded banks near 

 streams; not common; found only at one point. Henry county, 

 December 28, 1896, T. E. S. 



10. Leucobryioii vulgare Hampe. Plants whitish and spongy 

 like sphagnum, with capsule and peristome resembling a 

 Dicranum; gommon on low, shaded grounds. Johnson county, 

 1895, Professor Shi)iieJK: Johnson county, March 13, 1897, T. E. 

 N.; Delaware county, September, 1897, J. E. Cameron: Mnsca- 

 tine county, November 15, 1897, ShiinekS Savage 



11. Ceratodon imrpnreus Brid. Common everywhere in 

 exposed places on dry ground. Johnson county, May 10, 1896, and 

 Cedar Rapids, May 15. 1896, Professor SJwnek: Johnson county, 

 October 10, 1896, T. E. S.: Pottawattamie county. May, 

 1897, J. E. Cameron: Lyon county, July, 1897, Professor 

 <S7i««e/i'; Muscatine county, November 15, 1897, Shi)nek d'- Savage. 



12. Ceratodon imrpureus arisfatus Aust. Leaves narrower 

 than the last, with long excurrentcosta; capsule paler in color; 

 not common. Mason City, 1895, Professor Shimek. 



Tribe Potties. 



13. Ditrivhnin paf/idum'H.am.pe. Not rare; on the ground in 

 dry places. Henry county, March 26, 1897, T. E. S.: Musca- 

 tine county, November 15, 1897, Shimek d- Savage. 



14. Ditrichiim tortile Muell. Common on exposed hillsides; 

 often grows associated with Barbuda unguienJata. Johnson 

 county, March 13, 1897, T. E. S.: Delaware county, September, 



1897, J. E. Cameron. 



15. Desmatodon arenaceus Sulliv. & Lesq. Rare, collected 

 only on shaded sandstone rocks. Muscatine county, November 

 15, 1897, Shimek it Savage. 



16. Barbula rigida Schultz. Not common; found only on 

 the dry loess hills of western low^a. Council Bluffs, November, 



1898, Professor Shimek. 



17. Barbula unguicidata Hedw. Common everywhere; grow- 

 ing on the ground or on limestone rocks in damp places. 



