
THE BROAD PRICKLY-TOOTHED BUCKLER FERN. 237 
more than twice the length of the anterior ones, and these posterior 
pinnules are themselves almost pinnate; the next pair is unequally 
deltoid, but the posterior pinnule is only about one-third longer than 
the anterior; and the inequality is nearly lost in the next and the 
succeeding pinna, which narrow gradually to the apex, the longest 
about the centre of the frond being about five inches long and an 
inch broad. The basal pinnules of the upper pinne are nearly 
oblong, their base being but little broader than their apex, which 
is very blunt; and they have a narrow stalk-like attachment, which 
becomes broader and more decurrent in the pinnules higher up the 
pinne. The pinnules of the lower pinne are more or less deeply 
pinnatifid according to their position, and the lobes, which are bluntly 
oblong, have a few coarse distinct teeth, each of which is terminated 
by a bristle-like point. The sori are small, numerous, forming a 
line along each side near the midrib of the smaller pinnules, and 
along the lobes of the larger ones; they are covered by reniform 
indusia, which are fringed with small stalked glands at the margin. 
This very marked variety, which we have found to be quite constant, 
and renewable from the spores, was discovered in 1854, by the Rev. 
J. M. Chanter and Mrs. Chanter, after whom it has been named, at 
Hartland, on the north coast of Devon, where it was met with 
growing in moderate quantity within a limited area, and accom- 
panied and surrounded by other common forms of the species. A 
similar plant, which may perhaps prove the same, has been gathered 
at Challacombe, Exmoor, by Mr. H. F. Dempster. 
8. angusta (M.). This variety has the outline and general features 
of the erect typical form of spinulosa (L. cristata, var.), but it possesses 
also the particular characteristics of dilatata. The fronds are nar- 
row linear-lanceolate, about two fect high, bipinnate; the stipes 
being as long as the lamina, and furnished rather scantily with 
large lance-shaped pale-brown dark-centred scales. The pinnee are 
shortly deltoid, and the lower two or three pairs very unequally so, 
the posterior pinnules being much the largest. The pinnules are 
narrow, oblong, obtuse, deeply pinnatifid with ovate or oblong lobes, 
having aristate teeth. The sori are small, abundant, occurring from 
the base to the apex of the frond, and covered by small indistinctly 
glandular convex indusia. The variety was established in our 

