FLORA OF OXFORDSHIRE. 427 
H. chrysophyllum, Brid. 
Grassy stony places, chalk hills, ete. May. Wychwood; near Minster 
Lovell; Heyford; Blenheim; Holton; Shotover; Lewknor; Stoken- 
church. No fruit. 
H. stellatum, Schreb. 
Bogs and wet grassy places; fruit rare. May. Wychwood; Weston- 
on-the-Green ; Headington Wick; Bullingdon Bog, formerly very fine and 
plentiful, but now scarce, and threatened with extermination. 
H. aduncum, Hedw. 
Wet grassy places and marshes. May, June. By the roadside between 
Witney and Woodstock ; Weston-on-the-Green ; Port Meadow ; Marston ; 
Bullingdon ; Horsepath ; south side of Shotover ; ponds near Bagley Wood ; 
Pusey and Buckland, Berks. When grown to large size it is H. Kneiffii 
of Bruch and Schimper. I+ varies according to the depth of water from 3 
inches to 2 feet in length. The Marston locality indicates this as Sib- 
thorp’s H. fluitans. 
H. fluitans, Dill., Hedw. 
Marshes, peaty ditches, bogs, pools, ete. May. Between Gosford and 
Bicester ; Watereaton ; in several places near Woodstock, Mr. Holliday ; 
about a pool at Holton Stone Pits. ‘Less frequent with us than the last 
species. 
H. filicinum, Linn. 
Marshy ground, wet banks, springs, etc. April. Extremely variable ; 
formerly very fine and fertile at Bullingdon, but otherwise rare in fruit. 
H. commutatum, Hedw. 
Wet calcareous places, rocks and bogs. April. Near the spring in 
Wychwood Forest, on dripping rocks ; bogs near Stow Wood and Heading- 
ton Wick, but without capsules. Probably this is Sibthorp’s H. Crista- 
castrensis. The true one is not likely to occur here. 
H. faleatum, Brid. 
Bogs and wet places in calcareous districts. May, June. Wychwood 
Forest ; Canal bank ; bogs at Stow Wood, Headington Wick and Bulling- 
don; formerly fine and abundant at the last, but now nearly destroyed, 
like H. stellatum with which it grew. 
H. cupressiforme, Dill. 
Woods, trees, thatch; very common. November, December. 
Var. filiforme, common on tree trunks ; fruit rare. 
Var. ericetorum, Wychwood ; Shotover ; Wootton, etc. 
Var. lacunosum, on the ground; Wychwood; Headington Wick ; 
Goring ; Henley, etc. 
Var. resupinatum, (Wils.) Wychwood; Grave Hill Wood; Bagley 
Wood, etc.; rare in fruit, as all the varieties are. 
