120 ENGLISH BOTANY. 



Yar. a. genuinum. 



Fronds bipinnate, or when small pinnate ; pinnae pinnatipartite 

 or pinnatifid, acute or subacute ; pinnules or ultimate segments 

 obovate or oblanceolate or rhombic-ovate, with large acuminate 

 mucronate teeth, which are as long as, or longer than broad. 



Yar. /3. obovatum. Gren. and Godr. 



A. obovatum, Viviani. Guss. Fl. Sic. Syn. p. 662. 



Fronds pinnate ; pinnae pinnatipartite or pinnatifid, more rarely 

 again pinnate, obtuse ; ultimate segments large, roundish-obovate, 

 with large rounded apiculate or shortly mucronate teeth, which are 

 not so long as broad. 



Yar. y. microdun. Moore. 

 A. marinum var. microdon, Moore, Ferns of Great Brit. Nat. Print, folio cd. sub tab. 38. 



" Frond pinnate ; pinnas undulated, with apiculate-dentate margins, 

 the lower ones distinct, obtuse, obliquely triangular, or unequally 

 cordate-subhastate, lobate below ; upper ones narrower, confluent. 

 Sori short." (Moore, Handb. Brit. Ferns, 8vo. ed. vol. ii. p. G7.) 



On ledges of rock, and walls and banks. Local. Frequent in Devon, 

 Cornwall, and Somerset ; it also occurs at Tunbridge Wells, on both the 

 Sussex and Kent side of the stream which divides these counties, near 

 the high rocks, and also on rocks in Eridge Park, Sussex; at Frenchey, 

 Beechly, and near Stapleton, Gloucestershire ; and in the counties 

 of Pembroke, Glamorgan, Merioneth, Denbigh, Carnarvon. Aery 

 rare in Ireland ; on both sides of the town of Kinsale, Cork, Mr. I. 

 Carroll, from whom I have specimens, and on an old tower at Reen- 

 cahirne, and on Ballycaibery Castle, near Cahirciveen, Rev. S. 

 Madden, Sup. ' Cyb. Hib.' Of var. /3 I have specimens from Mr. I. 

 W. N. Keys, from rocks near Tavistock, Devon, which I cannot 

 distinguish from the ordinary Asplenium obovatum of the Mediter- 

 ranean district. 



" Yar. microdon is a native of Guernsey, and was found in 1855 

 first by Miss Wilkinson, and subsequently in other stations by Miss 

 Mansell, of the Quesne, and Mr. C. Jackson, to the latter of whom we 

 are indebted for specimens and for our knowledge of the plant. 

 Mr. Jackson informs us that it grows on banks of rough masonry 

 without mortar, and intermixed with Asplenium lanceolatum, at some 



