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being longer and more bristly than usual. When originally found
its pinnules were somewhat depauperated, distant and confluent, hut
those features have not been permanent. I t was found by Mr. R.
Sim, at Ghislohurst, Kent.
4. nana (Sim). This also belongs to the spinulosa type, and is
described by Mr. Sim as boing about six inches high, and constant
to its dwarf pigmy charactor.
6. crispa (M.). This also belongs to the spinulosa type, and has
boon recorded by Dr. Dealdn, in tho Florigraphia Britannica (iv. 108,
figs. e ,f, on p. 111). I t is described as being very rigid, the margins
of the lobes of the pinnules closely rolled hack, and partly concealing
the sori ; they are said to he so rigidly curled back as to he
retained flat with great difiioulty when unrolled. The sori arc
larger and much darker than in the usual forms of sgrinulosa. I t
was found noar Shoflield in Yorkshire.
6. interrupta (M.). A slight variation of the spinulosa type, in
which the pinnules are irregularly developed ; horo and there depauperated,
and in some parts enlarged and broader than usual.
I t was found at Malton, Yorkshire, by Mr. Monkman.
7. tripinnata (M.). A very elegant form of the spinulosa type.
The fronds aro narrow, stiff, erect ; the pinnæ short, and the pinnules
small, hut the anterior and posterior onos unequal as in the
most marked forms of spinulosa ; the pinnules are, however, distinctly
divided into little oblong obtuse lobate-serrate or biserrate pinnulots.
The general aspect of the frond, is that of being made up of a
multitude of littlo parts. I t was purchased of a Fern hawker hy
Mr. F. C. Wilson, of Stamford Hill.
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THE BROAD BEICKLY-TOOTHED BUCKLER EERN.
LASTREA DILATATA.
L. fronds ovate, snbtriangular, or oblong-lanoeolate, bipinnate,
with the pinnules pinnate or pinnatifid, spinosely mncronate-serrate ;
scales of the stipes numerous, lanceolate, entire or fimbriate, usually
dark-centred ; indusium fringed with stalked glands.
— (type) : fronds ample, ovate, bi-tripinnate ; scales of the stipes
entire, strongly two-coloured, i. e., with a dark centre and paler
margins ; indusium prominent. [Plate X L I II.]
L a stkea d ila ta ta , Presl, Tent. Pterid. 77. Nevimmi, Nat. Aim.. 1844, 23.
BaUngton, Man. BrU. Bot. 4 ed. 422. Sowerby, Ferns o f Gt. Brit. 25, t. 13.
Moore, Handb. Brit. Ferns, 3 ed. 1 2 4 ; Id ., Ferns o f Gt. Brit. Nature
Printed, t . 22.
L a sth ea MULTIFLOE.A, NewTfian, Hist. Brit. Ferns, 2 ed. 215. Deakin, Florigr.
Brit. iv. 113, fig. 1613.
A s p id ium d i l a t a t u m , Smith, FI. Brit. 1125 ; Id., Eng. FI. 2 ed. iv. 280 ; Id .,
Eng. Bot. x x i. t . 1461. Swartz, Syn. Fil. 420. Fée, Gen. Fil. 291. Alet-
tenius, Fil. Hort. Bot. Lips. 93. Tenore, Ait. Accad. del Ii. Inst. Sc. Nat.
Napol. V. {repri; ^ 18, t . 2, fig 3). Loiue, Nat. Hist. Ferns, vi. t . 27.
A s p id iu m SPINULOSUM, Swartz, Schrad. Journ. Bot. 1800, ii. 38, in p a r t ; Id .,
Syn. F il. 54, in p a rt, 420. Smith, FI. B rit. 1124 ; Id ., Eng. Bot. xxi.
t. 1460 ; Id ., Eng. FI. 2 ed. iv. 279, in p a rt. Willd. Sp. Plant, v. 262.
Hooker A Arnott, Brit. FI. 7 ed. 586 (excl. 7 .) Bentham, Handh. BrU.
FI. 630, in p a rt. Fries, Sum. Veg. 82.
A sp id ium s p in u lo s um , v . d i l a t a t u m . L in k , Fil. Sp. 106. A . Gi’ay, Man.
Bot. North. U. States, 2 ed. 597.
A s p id ium spin ulo sum, 5., Ruprecht, Dist. Crypt. Ross. 38.
A s p id ium chistatum, FI. Wett. ; a c co rd in g to Steudel.
A s p id ium c a r th u s ia n um , Steudel, Nomcncl. Bot. 61.
P olypodium d ila ta tum , Hoffmann, Deutschl. FI. ii. 7.
P olypodium crista tum, Hudson, FI. Ang. 457. Hoffmann, Deutschl. FI. ii. 8.
Bolton, Fil. Brit. -t. 28.
P oly pod ium ca r th u s ia n um , Villars, Hist, des PI. Dauph. iii. 842, a c co rd in g to
W illd en ow .
P olypodium m u l tiflo r um , Roth, Catalect. Bot. i. 135.
P o ly st ic iium m u l t if lo r um , Roth, FI. Germ. iii. 87.
P o ly st ic iium s pin ulo sum, De Candolle, FI. Franç. ii. 561 (excl. sy n . Swartz).
Ledehoior,Fl. Ross. iv. 515, in p a rt.
P olystichum sp in u lo sum , d ila ta tum , Koch, Synops. 2 ed. 979.
P olystichum d ila ta tum , De Candolle, FI. Franç. v. 241.
N e ph r o d ium crista tum , Michaux, FI. Bor. Amer. ii. 269 ; a c co rd in g to Piirsh.
N e phrod ium d ila ta tum , Desvaux, A n n . de Soc. L in n . Paris, 261.
D r y o p t e r i s d i l a t a t a , A. Gray, Alan. Bot. North. U. States, 1 ed. 631.
L o p h o d i u m m u l t i f l o r u m , Weiümftîi, Phytol. iv. 3 7 1 ; Id ., 1851, A p p .K v i\.\
Id ., Hist. Brit. Ferns, 3 ed. 147 (excl. syn. Presl).
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