ol2 CETERAC'U OJ'FICINAKUM. 



• Asplenlmn ceterach, Linn^us. Bolton. LiGiiTrooi. 



" " Sturm. Cavanilles. Lamarck. 



" " Hooker. 



" sinuatiuH, Salisbury. (Not of Poiret, Hooker, 



or Mettenius.) 



Blcchnam squamosum, Stokes. 



Pohjpodiam asplenioides, ScoPOLl. ScHKUHR. 



Ceterach — A name (ChetheraJi) given by the Arabian and Persian 

 pliysicians. ODicinarmn — ? 



Fronds numerous. Length one inch and a half to eight 

 inches, fleshy coriaceous, linear-lanceolate, profoundly pinnatilid, 

 frequently pinnate below^ deep green, smooth above, densely 

 tawny-scaly beneath. 



Veins forked and indistinct. 



Caudex brief, tufted, scaly. Vernation circinate. 



Stijjes brief, densely tawny-scaly, and venose, with numerous 

 black reticulations. 



Sori covering the whole luider side of the frond, linear 

 oblong. Indusium obsolete. 



A local Fern, growing on walls and ruins from the sea 

 level to an altitude of six hundred feet. 



Found in Cornwall, Devonshire, Somersetshire, Hampshire, 

 Dorsetshire, AViltshire, Sussex, Hertfordshire, Kent, Berkshire, 

 Essex, Surrey, Oxfordshire, Norfolk, Suffolk, Gloucestershire, 

 Warwickshire, INIonmouthshire, Herefordshire, Worcestershire, 

 Staffordshire, Shropshire, Nottinghamshire, (Nottingham Park, 

 Colwick, and Papplewick, probably now extinct in this county,) 

 Derbyshire, Cheshire, Lancashire, (I have seen it abundantly 

 in two new localities near Clitheroe, namely, Pendle Hill and 

 Browsholme Hall, always the variety crenatum.^ Yorkshire, 

 Northumberland, Westmorland, Cumberland, Brecknockshire, 

 Glamorganshire, Carmarthenshire, Pembrokeshire, Denbighshire, 

 Merionethshire, Carnarvonshire, Berwickshire, Dumfriesshire, 

 Ivircudbrightshire, Penfrewshire, Lanarkshire, Argyleshire, 

 Perthshire, Antrim, Down, Fermanagh, Sligo, Galway, Louth, 

 Dublin, AVicklow, Kilkenny, Waterford, Tipperary, Clare, 

 Cork, Kerry. Jersey, Isle of Wight, Arran Isles, and Anglesea. 

 Abundant in the west and north-west of England. Ireland, 

 abundant, but local. Hare in Scotland and on the east of 

 England. 



