154 



ASPLENIL'M LAXCEOLATUM. 



their ajjex blunt, triangular-rotund. Pinnules petiolate, except 

 at the apex of the pinntc, distant, large; their base cuneate, 

 entire; their margins minutely fringed with diminutive teeth; 

 occasionally the pinnules are wanting. Length from four to 

 five inches; colour a rich green. My thanks are due to 

 Messrs. Stansfield for fronds. 



Fig 4i1G.— Apex. 



Obtusum, Clapliam. (Fig. 496.) — A distinct form raised 

 from spores by Mr. A. Clapham, of Scarborough. The fronds, 

 which are from eight to ten inches in length, terminate 

 obtusely. The pinnte are broader at the base. The basal 

 pinnules are much larger, more divided, and more distant. 

 ]My thanks are due to Mr. Clapham for fronds. 



MicKODON, Moore. {Aspleniiun microdon, Moore, and A. 

 marimim rar. microdon, Moore.) (Plate XXXIX. — B.) — This 

 handsome and very distinct form was found in Guernsey, in 

 1855, by Miss Wilkinson, and subsequently by Miss Mansell, 

 of the Quesne, and Mr. C. Jackson. Also near Penzance by 

 Mr. G. Wager. The fronds are irregularly linear, with a 

 tapering point, pinnate, and from six to twelve inches in 

 length. PinnfE distinct; approximate in the lower half of the 

 frond, briefly stalked, pyramidal, the lowest triangular, oblique, 

 deflexed, and tapering to a blunt point; the upper pinnre 

 shorter, crowded, adnate with the slightly-margined rachis; 

 lobed and undulated at the margin; the basal lobes rounded, 

 and divided nearly to the costa, and overlapping, the divisions 



