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Plate XVIII. 



THE RIGID BUCKLER FERN (Lasirea iug.da). 



LASTKEA, Presl 



Clusters of Sporc-c*t$cs circular, medial or subtcrminal on the venules, covered by an 

 indusium, or membranous scale, Indxmum rcniform, u e„ more or less regularly 

 rotundato with a posterior notch; attached by the sinus or notch, the margin 

 becoming free, Feins simple, forked, or pinnate ; venules direct, disunited at 

 their extremities. 



L. higida: fronds elongate triangular or lanceolate, bipinnatc, glandular ; pinna* taper- 

 ing to the a]>ex ; pinnules oblong, blunt, lobed. the segments broad rounded, 



two- to five-toothed, the tooth not spinulosc ; indusium convex, pcrsiatontv 

 fringed with glands. 



Limit* Itioina. Pr**l r to«f« iVmJqrro;>W t 77. U*U*gt*n, Mtmiuil tf LritUh JMmy.ML SWty. 



fV/m.ALl]. Am*-*, ULtw, ef Brtitih Fer*t t 2 od, 101. JXowy, .//*aJow*y tiritUh ftrulll. 



JWttn, FMpraplta JfrtUnxiM, fa 90. 



PoLYronirw rawiiu^ FIBm, HiitM 4*4 PU&tt* *?» Itewpkitf, ii*. **3 ; not f Lmi»«»i or HuuW 



Poiifowt w VfttAUO, ifrJWi. ^«c£r nj Ffa*m JWruffi/aaunt, JQ, 



IWrobicu Qiuomu*! JKrMauM, JfttMrV Jr*Iw./fr4* Jht an & t 1 10 ; according to Wooer and Motifv 



A.r»irn W <H*t«, fewfe SrArouV/. /MfW/tr .to **,«*. |*00, U. OT. ftlMr, KtytopmM* G«W W , 



40, 1. as, /fofrr, &f^#wa/ to Eaglhh JJtf**y, t, 2721. /Aotwr **»,/ ylrwf/, Bridal i'fc™ SCSI 

 IJ'iWmmt, o>rtfo I>l a At*nm t v. 205, 4**9*'- .%**•*• Kp*M«*"i j r . |0& 



Asnincn rgaouya, Gr*f t X*tur*t Arraapwt tf B,i,U\ NoMU t $i not of Swurt*, 



AfnPlUV * A tL»m, Ifefc Wmm Spccir* in Hcrto JknJUr**; «&*>, 107. 



AmfttVU ttT&m*, "Awmr," £*W, /jufi-r FXk*m t in Liana*, nfaU 220. 



Aarmitu JJoorrti, TiwiV™.* ; according to J>r. A. Gray. 



A*ri»ir* ajuimnr, Ana<{Aw, iW.^,., JWmn, :M2. 



Nehikouiuu. rAUiftrit, ibry, EffSJitfca & U J/ot>, 2$7 t t &1, 



I\n>Y*ricaiT>i ihoidcm, XI* Q*n4dU t Ftw F™*(«w,3 cd, u. 500. 



!\>ia>ticiich miuOaim, ifofi, iTor* Gtrwuniea, iii. 80, 



likiorrcau bioiPhI, ^- Cray, lkta*y<fftl* AWA>m fniffJ Steto, G3\, 



J^HOWPK HI<ll|>irM v 3>IIW^^|^U|0i%M^/,Hl; //irfwy <f Briti*h Ftw t 175. 



EXPLANATION OF THE PLATE. 

 I'ut*; XVI1L— IiAfctnn KioiDit from Amriilr Knot. WoitmnnSn !. K H'tofr. 



IIAmTAT^TIit. U a local plant, oImo*l tatM? «ttfinod T ni for w roganU tlio Unito<l Kinguonw. to a few limoitono, m^gj- 

 moxifilaiooiu IracU 4i *ilhm % s»ull iro* in tie approi!iu»lin S portiaai of th* oounlin of Wcotaorebjul, LanoJutor 

 «h! York/' Tl^cro it a rworJ of ■ «i*s^ *bot torio- bc«, ftud ikot telfc-wtiff* it hid |-rob»biv btoa phnM \ 

 nod 3Ir, Uwbt- rq>orU (/^^oi^irf. iv. 7i»ft) batkg found it cuito rttaWtibed, 00 A wnU of *Uv-il*lo ovcrhtinj W 

 tnc*> *l TWnloj Hill, Id U.e coauty of LoalK IroUml In Kn«ba<l Eta Hmt»n abort tho « wo«M *nwar to 

 rauge between 1200 fwt nod lflOO fed. or tlH-MottouU. 



GKO<;KAPJllCAL DlsntlDimoX^lU. P^ b apread over iU a^iddto »| .octfc of Europe l^dc* fi«la<ML 

 o»d pcrliip IroUiid, it i> found m Franc*, Sritwrland, Sardmia, Calabria, Sidly, GanaA/, JKilmalb, CVdatai 

 Ilun^rj, and in tho llor,^ It hi. bwu obtaltiiHl from Mount typifa* in A^i Hum (//V //oo^) ( aud frooi' 

 Sj^ru- Kaulfu«*a J^m» arf*tu** ¥ frotn Cahfomia, i» tncrdy a largrr and moro d*u*lop«d fonu of |> H * k|k* k». 

 Acoordiug to J)r Am Gray, /-. r^tf* 1* fouuJ. tbou^h rardy. in ilawaditwlK North Amffkv, ubtw aJw U 

 ■oiuirvft a lar^rr turo »nd moro dVrctopod character than it dOM in Kurope. 



Cauda thick, scaly, tuftc<I, dcciinibcntv formed of the bases of the decayed fronds closely surrounding 

 a woody axis, to the apex of which the fronds arc attached and adherent Scale* lanceolate attenuate, 

 and linear-hutceolalo, or subulate. Fibres long wiry branched, dark-coloured 



Stipes short, about one-third of the length of the entire frond, sometimes more, thickened at the 

 base, glandular, densely clothed with long subulate or linear-lanceolate narrow-pointed, membranous, 

 scales intermixed with broader ones, all of a reddish-brown colour; the scales become smaller and 

 less abundant upwards, Rachis furnished with scattered hair-like scales ; both primary and secondary 

 rachides bearing numerous short-stalked translucent glands. 



