PLANTS OF IOWA 113 



MUSCI. MOSSES. 



SERIES I. ACROCARPI. FRUIT TERMINAL. 

 PHASCE^ TRIBE. 



Phascum, L. 



1430. P. cuspidatum, Schreb. 



Growing on clay hillsides exposed to the sun; common 

 in early spring. 



WEISLELE TRIBE. 



Astomum, Hampe. 



1431. A. nitidulum, Schimp. 



On wet, marshy ground, growing among grass and 

 weeds; rare. 

 Weisia, Hedw. 



1432. W. viridula, Brid. 



Very common on wet ground, fruiting throughout the 

 year. 

 Dicranella, Schimp. 



1433. D. varia, Schimp. 



On clay banks in open and exposed places; not common, 



1434. D. heteromalla, Schimp. 



Grows on the ground, often associated with species of 

 Barbula; common. 



1435. D. flagellare, Hedw. 



Growing on sandy hillsides, in the shade; not commonly 

 distributed over the state. 



1436. D. scoparium, Hedw. 



Common on low, sandy ground, in shaded places. 

 Fissidens, Hedw. 



1437. F. minutulus, Sulliv. 



Very rare; found only in the deep ravines al Wildcat 

 Den ; on the sandstone rocks near the water. 



1438. F. taxifolius, Hedw. 



On damp, shaded banks near streams; not common; 

 found only at one point. 



