IOWA. ACADEMY OF SCIENCES. 
157 
7. Dicranum scoparium Hedw. Common on low, sandy 
ground, in shaded places. Johnson county, October 10, 1896, 
T. E. S.; Muscatine county, November 8, 1897, Professor Sliimek; 
Delaware county, September, 1897, J. E. Cameron. 
8. Eissiclens minutulus Sulliv. Very rare; found only in the 
deep ravines at Wildcat Den; on sandstone rocks near the 
water. Muscatine county, November 15, 1897, Shimek d- Savage. 
9. Eissiclens taxifoUus Hedw. On damp, shaded banks near 
streams; not common; found only at one point. Henrj^ county, 
December 28, 1896, T. E. S. 
10. Leucohryum vulgare Hampe. Plants whitish and spongy 
like sphagnum, with capsule and peristome resembling a 
Dicranum; common on low, shaded grounds. Johnson county, 
1895, Professor Shimek: Johnson county, March 13, 1897, T. E. 
S.: Delaware county, September, 1897, J. E. Cameron; Musca- 
tine county, November 15, 1897, Shimek & Savage 
11. Ceratodon purpureus Brid. Common everywhere in 
exposed places on dry ground. Johnson county. May 10, 1896, and 
Cedar Rapids, May 15. 1896, Professor Shimek: Johnson county, 
October 10, 1896, T. E. S.; Pottawattamie county. May, 
1897, J. E. Cameron: Lyon county, July, 1897, Professor 
N/wme/ij; Muscatine county, November 15, 1897, Shimek & Savage. 
12. Ceratodon purpureus aristatus Aust. Leaves narrower 
than the last, with long excurrent costa; capsule paler in color; 
not common. Mason City, 1895, Professor Shimek. 
Tribe Potties. 
18. Ditricliuyn pallidum PLdcmpe. 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. Ditrichum tortile Muell. Common on exposed hillsides; 
often grows associated with Barbula unguiculata. Johnson 
county, March 13, 1897, T. E. S.; Delaware county, Septemoer, 
1897, J. E. Cameron. 
15. Desmatodon arenaceus Sulliv. & Lesq. Rare, collected 
only on shaded sandstone rocks. Muscatine county, November 
15, 1897, Shimek d) Savage. 
16. Barbula rigida Schultz. Not common; found only on 
the dry loess hills of western lowm. Council Bluffs, November,. 
1898, Professor Shimek. 
17. Barbula unguiculataHedcsR . Common everywhere; grow- 
ing on the ground or on limestone rocks in damp places. 
