THE BRITISH FERNS. 
Polystichum Lonchitis (i. 119). 
According to Mr. Westcombe, the habitats of this Fern are confined to rocks of 
micaceous formation. 
Mr. C. Jackson has sent a small frond in which the margins are crenately-serrate, 
and not at all spiny-toothed. 
Polystichum aculeatum (i. 129-133). 
Humber.—Yorkshire : Scarborough, A. Clapham. 
Tyne. Durham : Darlington, Mrs. Crawford Marley. 
W. Lowlands.—Dumfties-shire : Moffat, J. Anderson. 
E. Highlands.--Inverness-shire : Dunphail, Miss. F. Brown. 
1. lobatum (Deak.). Dumfries-shire : Moffat, J. Anderson. Inverness-shire : Dun- 
phail, Miss F. Brown. 
1.* lobatum acutum (Jerv.). A narrow attenuate form with the apex narrowed out 
to a long point, the pinn acute or almost acuminate, and the segments small 
close and remarkably spiny-toothed. Found in Staffordshire by Mr. S. Jervis, 
and in Somersetshire by Mr. Elworthy. 
5. multifidum (Woll.). Mr. Elworthy has found in Somersetshire a finely tufted 
constant form of this variety. 
Polystichum angulare (i. 140-159). 
E. Highlands. —Perthshire : Ochtertyre, Dr. P. Maclagan. 
Munster. —W aterford : Clonmel, J. Sibbald. 
2. hastulatum (M.). Devonshire : Marwood, Rev. F. Mules. Sussex : J. H. Sclater. 
Durham : Darlington, Mrs. Crawford Marley. A small form of this variety 
has been found by Mr. Elworthy, near Nettlecombe. 
. quadratum (M.). Devonshire : Marwood, Rev. F. Mules. Sussex : near Uckfield, 
J. H. Sclater. ` 
. acutum dissectum (M.). Devonshire: Marwood, Rev. F. Mules. Surrey : Leith 
Hill, H. Lavey. 
. aristatum (Woll.). Devonshire: Marwood, Rev. F. Mules. 
. densum (M.). Devonshire: Barnstaple, C. Jackson. Somersetshire : Nettlecombe, 
C. Elworthy ; Weston-super-Mare, H. Parker. 
11. rotundatwm (M.). This as it becomes more developed, has the pinnules some- 
what roundish-trapeziform, and indistinctly three- or four- lobed. It is a very 
remarkable form. 
15. biserratum (M.). Devonshire: Bideford, C. Jackson. Cork: Glendine near 
Youghal, A. Tait. 
15* biserratum incompletum (M.). A large form of biserratwm somewhat depaupe- 
rated in respect to the pinnules, which are here and there in an irregular way 
slightly reduced in size, and variously misshapen. Found in Somersetshire at 
Nettlecombe by Mr. Elworthy. 
16* curtum (M.). The fronds of this curious form are short and triangular, six or 
eight inches long and about five inches across the base. The pinne are rather 
irregular, crowded; the pinnules when least developed resemble those of 
biserratum (15), but are in some parts more or less pinnatifid approaching to 
plumosum (31). In all the fronds we have seen, the basal pair of pinne have 

