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22. erosa (Woll.). The peculiarity of this form, which somewhat 
resembles the collina type, resides in the marginal toothing, which is 
so arranged as to produce a nibbled but scarcely unsymmetrical 
appearance. The frond is narrowly ovate, bipinnate; the pinnules 
distant, oblong obtuse, lobed, and the lobes serrated, the serratures 
being bristle-pointed, and often curved. A peculiar feature of the 
variety consists in the pinnules being somewhat unequal in size, in 
the lobes of the pinnules being also unequal, and consequently in 
the toothing being irregular. It was found by Mr. Wollaston at 
Tunbridge Wells. Mr. Clowes has found at Windermere a similar 
plant, but larger and more deeply lobed, the pinn® being, though 
very slightly, here and there interrupted. 
23. interrupta (M.). This, is a variety of the collina type, and is of 
medium size, and of irregular development. The fronds are lanceolate- 
ovate. The pinne, normally composed of close-set oblong obtuse 
pinnules, are sometimes wanting, sometimes reduced half or more in 
length, and acquiring an irregularly incised or laciniated margin ; 
sometimes nearly normal towards the tip, and having the pinnules 
near the base variously reduced, and altered in outline, as well as lacin- 
iated. It is as the name implies, one of the interrupted or irregular 
forms. The fronds are sometimes ramose as well as interrupted. It 
was found near Harrogate in Yorkshire by Mr. Clapham. 
» 24. cristata (M.). This appears to be a dwarfish form, of broad 
ovate outline. The pinne are mostly about twice-forked into short 
bluntly dilated segments forming a slightly crisped terminal tuft, 
and the apex of the frond is similarly but rather more deeply divided. 
When not thus tufted, the apices of the pinne are very broad, blunt, 
and dilated, showing by the branching of the veins a tendency to 
become forked, so that it is probable the plant may eventually prove 
to be more thoroughly eristate than our figure represents. It was 
found near Doncaster by Mr. S. Appleby, and was communicated 
by Mr. R. Sim of Footscray. [Plate XLIX A.] 
25. glandulosa (M.). This is a large growing and somewhat erect 
habited plant, with much the aspect of a large broad spinulosa, but 
differing from that plant in the scales of the stipes being frequently 
two-coloured and more lanceolate, and in the indusia being fringed with 
glands. The caudex proves to be decumbent or somewhat creeping. 

