80 ASPIDIUM DILATATUM. 



The form Chanterice, "Mrs. Chanter's prickly-toothed Buckler 

 Fern," differs in the narrowed form and attenuated apex of its 

 fronds. 



The form Angustatum, the "Linear prickly-toothed Buckler 

 Fern," has narrow lanceolate bipinnate fronds. It very closely 

 approaches A. spinulosum. 



The form Alpinum, the "Alpine prickly-toothed Buckler 

 Fern/' another form approaching A. spinulosum; common on 

 Ben Lawers. 



The form Glandulosum, the "Glandular prickly-toothed Buck- 

 ler Fern," is large and erect in habit. 



It would be impossible to describe the endless variety of this 

 very variable species. Mr. Moore, in his "Nature-printed Ferns," 

 gives the following as the most distinct of the varieties of 

 A. dilatatum, (the Lastrea dilatata of most authors.) 



1. — MuUifida, Wollaston. Kachis divided low down, so as 

 to make two fronds on one stipes. Not constant in cultivation. 



2. — Tanacetifolia, Moore. Broad tripinnate triangular frond. 



3. — Pumila, Moore. Small sub-deltoid bipinnate variety, 

 with pallid scales. A local Fern from Hampstead, Dumbarton- 

 shire, Carnarvonshire, Bute, and mountains of Dublin and 

 Wicklow. 



4. — Deltoidea, Moore. — An elegant variety, with deltoid 

 tripinnate finely-cut fronds. Found in Devonshire, by the 

 Eev. J. M. Chanter. 



5. — Fuscipes, Moore. Fronds nearly as broad as long, tripin- 

 nate, the points of the fronds and pinnse caudate. Found in 

 Guernsey, by Mr. G. Wolsey. 



6. — Micromera, Moore. Finely divided, though small it is 

 almost quadripinnate. Found near Ilfracombe, by the Rev. J. 

 M. Chanter. 



7. — Nana, Newman. Fronds ovate, bipinnate, and very 

 dwarf. From Settle and Ilfracombe. 



8. — Dumetorum, Moore. Dwarf, fronds ovate; stipes and 

 rachis clothed with glands, as well as the under side of the 

 frond. 



9. — Collina, Newman. Somewhat similar to Dumetorum, but 

 almost destitute of the glands so conspicuous in that variety. 



10. — Smithii, Moore. An Irish plant, somewhat related to 

 Collina. 



