124 METROPOLITAN PARK FLORA. 
H. letum, Brid. 
Shaded places on roots, logs, etc. S, rare. 
H. salebrosum, Hoffm. 
On ground, stones, etc. Band S, common. 
H. velutinum, L. 
On ground, shaded places. Band S, common. 
H. rutabulum, L. 
On ground, roots, and stones. Band S, common. 
H. Nove-Angliz, Sulliv. & Lesq. 
On ground. Band S, common. 
H. populeum, Hedw. 
Usually on rocks. Band S, common. 
H. plumosum, Swartz. 
On moist rocks. Band S, common. 
H. strigosum, Hoffm. 
On ground. Band S, common. 
H. Boscii, Schwaegr. 
On ground. S, rare. 
H. serrulatum, Hedw. 
On ground. Band S, common. 
H. rusciforme, Weis. 
On stones in water. S, rare. 
H. Alleghaniense, Muell. 
Shaded banks. Mand S, occasional. 
H. denticulatum, L. 
On decaying trees. MV, rare. 
H. radicale, Beauv. 
On decaying wood, roots, etc. S, common. 
H. orthocladon, Beauv. 
On the ground, stones, etc., in damp places. WM, rare. 
H. adnatum, Hedw. 
On stones or base of trees. S, common. 

