PLANTS OF IOWA 119 



1489. B. acuminatum, Beauv. 



Common in damp woods, on decayed logs. 



1490. B. acuminatum, var. setosum, Sulliv. & Lesq. 

 Habitat same as last. 



1491. B. rivulare, Bruch. 



In swamps and very wet places ; not common. 



1492. B. plumosum, Swartz. 



Rare; growing on damp sandstone rocks and on wet 

 ground. 

 Eurhynchium, Br. Eur. 



1493. E. liians, Hedw. 



Not rarely found on moist, shaded hillsides. 

 Rhynchostegium, Br. Eur. 



1494. B. serrulatum, Hedw. 



Very common in dry woods on the ground. 

 Plagiothecium, Br. Eur. 



1495. P. sylvaticum, Huds. 



Rare ; growing on the ground in deep shade. 

 Aiiblystegium, Br. Eur. 



1496. A. serpens, Linn. 



Common on decayed logs or on the ground in damp, 

 shady places. 



1497. A. irriguum, Hook. & "Wils. 

 Not rare on wet ground. 



1498. A. adnatum, Hedw. 



Commonly found on trees or on stones in damp places ; 

 rare. 



1499. A. riparium, Linn. 



Very common on decayed logs in damp woods and 

 along streams ; very variable. 



1500. A. riparium, var. fluitans, Lesq. & James. 



Not rare; growing in the mud or water on the borders 

 of streams. 

 Campylium, Sulliv. 



1501. C. hispidulum, Brid. 



Common in wet places on logs or roots of tiv. & 



