P o ly s t io h u m L o n o h it is (i. 119).
According to Mr. Westcombe, th e habitats of this Eern are confiued to rocks of
micaceous formation.
Mr. C. Jackson has sent a small frond in which th e margins are crenately-serrate,
aud n o t a t all spiny-toothed.
P o ly s t io h u m a c u le a tum (i. 129-133).
//limïier.—Yorkshire : Scarborough, A . Olapliam.
T y « .—Durham : Darlington, Mrs. Crawford Marley.
IF. Xoioitmds.—Dumfries-shire : Moffat, J . Anderson.
E. Highlands.—luverness-sliire ; Dunphail, Miss. F. Brown.
1.' lohatnm (Deak.). Dumfries-shire : Moffat, 7. Anderson. Inyerness-shire : Dunpliail,
Miss F. Brown.
1 • loUtum aentum (Jerv.). A narrow attenuate form with th e apex narrowed ou.t
to a lono- point, th e pinnæ acute or almost acuminate, and th e segments small
close and remarkably spiny-tooüied. Found in Staffordshire by Mr. S. Jervis,
and in Somersetshire by Mr. Elworthy.
5. mu ltifid um (Well.). Mr. Elworthy has found in Somersetshire a finely tufted
constant form of th is variety.
P o ly s t i c h u m a n g u la r e (i. 140-159).
E. J/iyMimds.—P erthshire : Ochtertyre, Dr. P . Maclagan.
Alunster.—Waterford : Clonmel, J . Sibbald.
2. hastulatum (M.). Devonsliire : Marwood, Per. P. Mules. Sussex ; 7 W. Sclater.
Durham : Darlington, Mrs. Crawford Marley. A small form of th is variety
has been found by Mr. Elworthy, near Nettlecombe.
3. quM ra tum (M.). DevonsMre : Marwood, Bev. P. Mules. Sussex : near Uckfield,
7 H. Sclater.
5. acutum dissectum (M.). Devonshire ; Marwood, Bev. P. Uules. Surrey : Leith
Hill, H. Lavey.
6. arislatwm (Woll.). Devonshire : Marwood, Bev. P. Mules.
9. densum (M.). Devonshire : Barnstaple, C. Jackson. Somersetshire ; Nettlecombe,
C. Elworthy ; Weston-super-Mare, H. Parker.
11. rotundatum (M.). This as i t becomes more developed, has tho pinnules somewhat
roundish-trapeziform, and indistinctly three- or four- lobed. I t is a very
remarkable form.
15. biserratum (U.). Devonshire: Bideford, C. Jackson. C o rk : Glendine near
Youghal, A . Tait.
15- büerratum incompUtum (M.). A large form of biserratum somewhat depauperated
in respect to th e pinnules, which are here aud there m an irregular way
slightly reduced in size, and variously misshapen. Found m Somersetshire at
Nettlecombe by Mr. Elworthy.
16* curtum (M.). The fronds of th is curious form are short and triangular, six or
eiirht inches long and about five inches across th e base. The pinme are rath er
irreoular, crowded ; th e pinnules when least developed resemble those of
Userratum (15), h u t are in some p arts more or less pinnatifid approaching to
plumosum (31). In all th e fronds we have seen, th e basal pair of pinnæ have
ADDENDA.
th e ir posterior pinnules enlarged, and quite pinnate a t tl e
natifid u pw a rd k hence acquiring something of th e outline charartei
of Lastrea dOatata. I t was found near Nettlecombe, Somersetshire, hy Mr.
Elworthy.
16.** pyramidaU (M.). A distiiict-looking form, with th e
giving i t a pyramidal or elongately-triangular outline. The ' P "™
of a foot lonri exclusive of th e stipes. The pmnce are dense, th e basal ones
five inches fong, th e next p air t o o ^ d
dently stalked, oblique, th e basal ones t a t
lobes ; th e upper p a rt of th e pinnules is biserrate aud the
prominently aristate. I t has been recently found by Mr. Elworthy
combe, Somersetshire.
'Nf'SSii,
hy Mr. Wollaston.
the se are separated by acute open sinuses producing a biserrated appeaianc ,
tlfe large prominent spiny te e th give i t a d istin ct aspect.
I t was found hy Mr. Wollaston, nea r Worthing, Sussex.
th e pinnules irregularly depauperated, th e main rachis bemg also arrested an
t X p e J r t f f e t m of a L a U horn or spur amongst th e misshapen pm n ..
I t was found in Devonshire, by Mr. Wollaston.
or with a few large angular teetb. The rachis is ““ “ “ “ J \
Mr, W. WiUison, and in Somersetshire, near Weston-super-Mare, by Mr. H.
Parker.
26. proemorsum (AUeli.). Mr. Elworthy has recently found near Nettlecombe. two
forms closely allied to th is variety.
/Mf \ TEk 1«? intermediate in character between prcesnor^im
p » - - - « i ». i
Elworthy.
th a n in th a t variety, and standing hack so as to appear almost reenrved.
. i "15
I
I f
” u
f,
; : ¡ i
,
< 1 .11
:i. T' I
■ 'V f f
1 (Í S