SCOLOPKNDUIUM VULGAUK. 231 



subundulatc; here and there lobcd or laciniate-dentatc, and 

 submarginate. The apex rounded; somewhat lobate, the costa 

 not cxtendmg to the margin, but developed in a leafy or 

 marginatc manner into a small pouch, which is occasionally- 

 fertile. The costa is occasionally prolonged as a horn through 

 the marginate apical membrane which forms the pouch. 



AcROCLADOx, Lowe. (Fig. 600.) — Found near Ambleside by 

 myself, in 185T. Fronds normal, except the wide-spreading 

 finger-like multifid apex, from which its name is taken. It is 

 a somewhat variable form; sometimes scarcely a frond is more 

 than partially branched, whilst in another every frond will be 

 beautifully characteristic. Length of frond twelve inches. 



Cristatum, Moore. (Plate L — A.) — A very handsome variety 

 of the Scohpendrium vulgare. The fronds are multifid, very 

 much divided, and forming large tasseled heads; the divisions 

 at the apex angular. Length of frond six or eight inches. 

 There are several sub-forms of this Fern in cultivation. For 

 fronds my thanks are due to Mr. Wollaston, of Chiselhurst, 

 and Mr. Stansfield, of Todmorden. The illustration is from a 

 plant in my own collection. 



Renikorme, Willia7ns. (Plate L — B.) — The Scolopendrium 

 reniforme is one of the curious and highly capricious forms of 

 the variety rariahile of Moore. It was gathered in Devonshire, 

 in 1850, by Mr. D. Hillman, and has also been found at 

 Oldstead by Mr. C. Monkman, and in the Channel Islands by 

 Mr. James, of Vauvert. The fronds are abrupt, and often truly 

 kidney-shaped. Other forms of fronds are occasionally produced 

 variously lobed, and others again approaching the normal form. 

 The veins radiating from the top of the stipes, twice furcate, 

 and free. Sori normal. Length of frond from one to four 

 inches, breadth from one to two inches. For plants my thanks 

 are due to Mr. James, of Vauvert, and for fronds to Mr. 

 Stansfield, of Todmorden. 



CoRNTiTO-ABRUPTUM, Moove. (Fig. COl.) — Found at Rivaulx 

 Abbey, Yorkshire, by Mr. C. Monkman, of Malton. A constant 

 form, with fronds six inches in length, and two inches and a 



