•318 LASTllKA TIIKI.YI'TEKIS. 



Lastrea — ? Thelypteris — ? 



The Marsh oi* Female Buckler Fern is an interesting bog- 

 growing species. 



Found in England in Devonshire, Somersetshire, Hampshire, 

 Sussex, Kent, Surrey, Berkshire, Essex, Suffolk, Norfolk, 

 Cambridgeshire, Bedfordshire, Huntingdonshire, Warwickshire, 

 Herefordshire, Staffordshire, Shropshire, Cheshire, Yorkshire, 

 Nottinghamshire, Northumberland, Cumberland, Westmorland, 

 and Isle of Wight. In Wales in Glamorganshire, Pembrokeshire, 

 Carnarvonshire, and the Island of Anglesea. In Scotland in 

 Forfarshire and Shetland. In Ireland in Antrim, Galway, 

 Mayo, Wicklow, and Kerry. 



General throughout Europe, Algiers, Cape of Good Hope, 

 New Zealand, Russian Asia, and North America. 



In a fernery a low boggy situation should be formed, where 

 this Fern would flourish luxuriantly with the Osmunda regalis, 

 a damp peaty soil being absolutely necessaiy for the growth 

 of this plant. 



Fronds lanceolate, membranaceous, erect; pinnate, pinna) 

 numerous, spreading, linear-lanceolate, and deeply pinnatifid. 

 The fertile fronds have the margins of their segments revolute, 

 are taller, and have a stouter stipes. Veins forked. Fructifi- 

 cation extending over the whole under side of the frond. 



Sori small, circular, and placed near the base of the venules. 



Indusium small and circular. 



Stipes as long as the leafy portion of the fertile frond; 

 smooth and round behind, channeled in front, near the base 

 black and polished, above pale green. 



Rachis smooth and circular behind, and channeled in front. 

 Caudex creeping. 



Length of frond from six to forty-eight inches; colour 

 delicate green. 



Easily cultivated in a damp situation with abundance of peaty 

 soil. 



This species I have procured wild from Oxton Bogs, and 

 for other plants I am indebted to Sir Oswald Mosley, Bart., 

 of Bolleston Hall, and for fronds to Mr. Norman, of Hull. 



The illustration is from a plant in my own collection. 



