160 
IOWA ACADEMY OP SCIENCES. 
Tribe Polytricheje. 
36. Catharinea undulata Beauv. Somewhat rare; on damp 
ground in shady woods. Johnson county, May 20, 1896, Pro- 
fessor Shimek: Johnson county, October 10, 1896, T. E. S,; Dela- 
ware county, September, 1897, J. E. Cameron; Muscatine county, 
November 15, 1897, Shimek d- Savage. 
37. Catharinea angustata Bruch. & Schimp. More common 
than the last; growing on drier banks in the woods. Johnson 
county, September 20, 1896, and Henry county, December 29, 
1896, T. E. S.; Keokuk, June 2, 1897, Professor Shimek; Musca- 
tine county, November 15, 1897, Shimek d Savage. 
38. Pogonatum hrevicaule Beauv. Not common; stems 
short, springing from a dark green tangle of branched, fila- 
mentous prothalbium; growing on moist banks. Henry county, 
December 28, 1896, T. E. S.; Muscatine county, November 1897, 
S himek d Savage. 
39. Polytriclmm piliferum Schreb. Rare; the costa of the leaf 
is prolonged into a long hyaline point. Lyon county, July, 
1897, Professor Shimek: Decorah, March 24, 1898, P. G. Myers. 
40. Polytrichum juniperinum Willd. Not rare; growing on 
the ground in rather dry places. Johnson county, October 10, 
1886, and Henry county, December 28, 1896, T. E. S.; Delaware 
county, September, 1897, J. E. Cameron; Muscatine county, 
November 15, 1897, Shimek d Savage. 
41. Polytriclmm commune Linn. Plants larger than the 
preceding, with the longer leaves serrate to the base; common 
in the woods. Johnson county, October, 1896, and Henry 
county, December 29, 1896, T. E. S. 
Series 11. PLEUROCARPI. 
Tribe Leskeace^. 
42. Thelia asjjrella Sulliv. A very beautiful moss; common; 
growing at the base of trees. Johnson county. May, 1896, 
Professor Shimek: Johnson county, September 20, 1896, and 
Henry county, December 28, 1896, T. E. S.; Delaware county, 
September, 1897, J. E. Cameron. 
43. Leskea polycarpa Ehrh. Common in damp woods alpng 
streams; growing on the trunks of trees. Johnson county, 
October 1, 1896, T. E. S. 
44. Leskea ohscura HQdiW . Plants smaller than the da st, with 
which it is often associated on trees. Johnson county. 
May, 1896, Professor Shimek; Johnson county, February 3, 1896, 
T. E. S.; Muscatine county, November 8, 1897, Shimek d Savage. 
