++ Indiisivmi frin g ed with stalked glands.
4. L. rigida : fronds bipinnate, glandular.
** Serratures o f pinnules spirwse-mueronaie.
+ Seales o f stipes ovate ; in d u sium without marginal glands.
5. L. cristata: fronds erect, nan-ow linear, pinna te ; pinnæ short trian g u la r;
pinnules oblong, all connected, basal ones nearly equal, crenate-serrate or
lobed, with aristate teeth.
var. uliginosa : fronds erect : th e fertile naiTow-linear-lanceolate, bipinnate
below ; pinnules oblong acute, mostly adnate, inciso-serrate or lobed,
with aristate teeth, basal ones nearly equal ; segments of sterile
and autumnal fertile fronds broader.
var. spinulosa: fronds erect, narrow-oblong-lanceolate, bipinnate ; pinnules
oblong acute, posterior basal ones much th e longest, all lobed or
pinnatifid, with aristate teeth.
t*b Scales o f stipes lanceolate, entire or fimbriated ; in d u sium with stalked
marginal glands.
Î Scales two-coloured, the centre darker ; caudex erect.
6. L. dilatata : fronds lanceolate, ovate or snbtriangular ovate, bi-tri-pinnate.
var. dumetorum : fronds dwarf, oblong-ovate or triangular, bipinnate, very
glandular ; pinnules oblong, with coarse te e th ; scales broad lanceolate,
fimbriate, sometimes pallid.
var. coUina ; fronds narrow ovate elongate, bipinnate ; pinnules oblong-
obtuse, lobed; lobes obtuse, seiTateat end ; teetli coarse, acuminate.
var. Chauteriæ : fronds lanceolate narrowed below, caudate-elongate a t
apex ; pinnæ distant, tlie lowest only unequal ; pinnules oblong-
obtuse, distant, pinnatifid, th e lobes coarsely toothed.
var. augusta : fronds linear-lanceolate, bipinnate ; pinnæ short deltoid, very'
unequal.
var. alpina; fronds narrow linear-lanceolate, membranaceous; scales broader,
and paler ; sori large ; indusium small, fugacious, ragged.
var. nana : fronds small, ovate, bipinnate ; indusium small, fugacious,
s lightly glandular.
var. tanacetifoUa : fronds ample, triangular, trip in n ate ; indusium small,
slightly glandular,
var. cristata ; fronds and pinnæ dilated, or once or twice irregularly forked
or crested a t th e apex.
Î Î Scales p a llid whole-coloured, or very indistinctly two-coloured.
(o) Caudex erect.
var. lepidota : fronds broadly ovate, quadripinnate ; u ltima te pinnules small,
pinnatifid, spiny-toothed ; stipes and rachis everyivhere densely scaly.
(j8) Caudex decumbent or creeping,
var. glandulosa: fronds ample, lanceolate-ovate or oblong-lanceolate, tri-
pinnate below, very glandular ; scales broad, lanceolate-ovate, semi-
appressed.
Scales o f stipes lanceolate, crumpled or laciniated ; in d u sium with
sessile marginal glands.
7. L. oemula ; fronds trian g u la r or triangular-ovate, tripinnate, hay-scented ;
pinnules concave.
THE FEMALE BUCKLER FERN, or MARSH FERN.
LASTREA THELYPTERIS .
L. fronds lanceolate with, a broad base, pinnate, glandless ; pinnæ
linear-lanoeolate, deeply pinnatifid; lobes oblong, their margins
revolute in the fertile fronds, tbe divisions of wbicb tbus appear
contracted and more acute ; caudex creeping. [Plate XXIX.]
L a s t k e a T h e l y k t e e is , Bory, Diet. Class. d’I Iü t. Nat. ix . 2 3 3 . Presl, Tent.
Pterid. 7 6 , t . 2 , f ig . 1 6 . Deakin, Florigr. Brit. iy . 9 6 , f ig . 1 6 0 5 . Babington,
M a n Brit. Bot. 4 e d . 4 2 1 . Newman, Hist. Brit. Ferns, 2 e d . 1 8 3 . Moore,
Handb. Brit. Perns, 3 e d . 9 7 ; Id ., Ferns o f Ot. BrU. Nature PrinUd, t . 2 9 .
Sowerby, Ferns o f Gt. B rit. 1 6 , t . 7 . Hooker, Gen. Fil. t . 4 5 A, fig. 2 .
L a s t e e a p a l u s t e i s , j . Smith, Cat. Cult. Ferns, 5 6 .
A s p id iu m T h e l y p t e e i s , Swartz, Schrad. Journ. Bot. 1 8 0 0 , n . 4 0 ; Id ., Syn.
Pil. 6 0 . Smith, PI. BrU. 1 1 1 9 ; Id ., Eng. FI. 2 e d . i v . 2 7 2 . Hooker & Arnott,
B rit. FI. 7 e d . 5 8 4 . Maekay, PI. Hib. 3 4 0 . Bentham, Handh. Brtt. FI.
6 2 9 . Sehlmhr, Krypt. Gew. 6 1 , t . 6 2 . Willdenow, Sp. Plant. Y. 2 4 9 .
Sprengel, Syst. Yeg. i v . 1 0 4 . Fries, Sum. ' Peg. 8 2 . Pe'e, Gen. Fil. 2 9 1 .
Mettenius, F il. Hort. Bot. U p s. 9 2 . A . Oray, Man. Bot. North U. States,
2 e d . 5 9 7 . Lowe, Nat. Hist. Ferns, v i . t . 1 8 .
A s p i d i u m p a l u s t r e . Gray, Nat. Arr. Bril. PI. i i . 9 . .
A o e o s t i o h u m T h e l y p t e r i s , Linnceus, Sp. Plant. 1 5 2 8 . Bolton, Fil. B n t.
7 8 , t t . 4 3 , 4 4 . rr a m s
P o l y p o d iu m T h e l y p t e r i s , Linnæus, Mant. Plant. 6 0 5 . Hudson, I I . Ang.
4 5 7 . Flora Danica, t . 7 6 0 . Sturm, Deutschl. FI. (F am n .) i . t . 5.
P o l y p o d iu m p a l u s t r e , Salisbury, Prod. 4 0 3 .
P o l y p o d i u m p t e r o i d e s , ft Lainarck, FI. Franç. i . 1 8 .
P o l y s t i c h u m T h e l y p t e r i s , Ro(h, FI. Germ. i i i . 7 7 . Koeh, Synops. 2 e d . 9 7 7 .
Ledebour, FI. Ross. i v . 6 1 3 .
N e p h r o d i u m T h e l y p t e r i s , Sirempel, Fil. Berol. Synops. 3 2 .
A t h y r iu m T h e l y p t e r i s , Sprengel, A n l. (Eng. ed . 1 4 7 ) .
T h e l y p t e r i s p a l u s t r i s , Schott, Gen. Fil. ( s u f i t . 1 0 , i n n o t e . )
H e m e s t h e u m T h e l y p t e r i s , Newman, Phytol. 1 8 5 1 , App. x x u . ; Id ., Hist.
Brit. Ferns, 3 ed. 123.
D e y o p t e r i s T h e l y p t e e i s , A . Gray, Man. Bot. North V. SMxs, 1 e d . 6 3 0 .
Caudex extensively creeping, sparingly branched, producmg fronds
at intervals, slender, blaokisb-brown, scaly at tbe growing point.
Scafes few, pale brown, ovate-lanceolate. Filree numerous, dark
brown, much branched, smooth, or tomentose.
Vernation oiroinate.
Stipes as long as or longer than the leafy portion in tbe fertile