I 



Plates XIX, XX. 



THE CRESTED BUCKLER FERN (Lasthea cristata). 



LASTREA, Prcd. 



Cluster* of Spore-cases circular, medial or subtcnninal on the venules, covered by an 

 imlusiiun, or membranous scale, fndusium rcniform, u e., more or less regularly 

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

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

 their extremities. 



L. cristata: fronds erect* narrow linear-oblong, sub-biplnnatc (or bipinnate) ; pinna* 

 short triangular, with oblong pinnules or segments, which arc nearly always 

 connected at the base, crenato-scrratc, or obscurely lobed, with oristato teeth ; 

 anterior and posterior basal pinnules on the lower pinmu nearly equal ; scales of 

 the stipes ovate, jwllid, scattered ; indusium without marginal glands. 



Umn caiatxiA, JV«/, Trnl**™ PUrLfyropk;*, 77, fitokim, Fhrfyrap&h JfrUmitM, ir* 107* Moore, 

 iUvlknkefJiritkh Err** t U4-5, Eali*ft<m t Xa*ia* of BritUk liotany. *10. Jfricwim, /littery </ ifrttfd 

 Frmt, 2 cA, 201. Sovrrty, Ftrn* t 2!. t, 10. 

 Lxviuzx CiLurrnu, JVmum, Ifiriory ofRrtiith Frr*4 r 2 ed*, 12* 



P0LYi*wc» caiiTAitSl, U***** t Sprit* PlwiAira, 1W1 ; according to tbo LmB«n Herbarium. 

 I'OLTroniL'M Gaumnn, £M*W, Sri/rOp jar X*t*rkumJe 9 ill 77. 



Ainoicic cbutitiv. j&cwfr, &lrwfcr'4 Journal fir Ae Brtmik, 1&X>, IL 37. 5*<*M. Ityfol ftotany, %%%, 

 U 2123 (not xxriii, L 1919) ; Aytol Flora, i*. 270. Hwtvr anJ Arnott, firittih Flow, fiGfc &****>, 

 Kryptwmi*** G<wc** ( 3fl,t 37. WtiUrno*, 8p«iM ittrtintM, r. 252. fyraoW, Sp**" Vr^tnUiimm, 

 ir. 101. 



A*l'l HI v C'WiTAtl II .-* ClLLiril 111*, I'm*, J7.-.: J. , . ., . fijpfc |MmoZ^ iLOOl ) . 



Aanotrw Goi-mlum*. offtoaw garden*; not af Hooktruid Grovitlc. ) T * rw v* 



AaripiCtf LAycMriiimr, Sprmctl, AAMuaj t uL KH. oVUmJr, Kiypttyvmutfo Gnritfor, l 



41,L+I. iri;Urwe F ^ W ' V *' ,ijrt '-^"» T -26^ $™jW ( £^«w r^Mi^tr. 101. ) ™ J * 



N i i'si i-oii u CfttaTAi r vt. J/frltfttJ, Flora RortjU~Antriat*o, iL 2*J0. 



IWvtTicitttt cnuriTL'il, Jfctfi, Jtora Grrnantat, iii. St. 



I'oLTrttcnrK Calii mnu, Jk CraW/* 17m ^Viif^ir^, 3 <*U ii. «tt. 



DiTortcnu OOfmi, ^. Gam/, Jfrrnuf of tetany afXprdm UnittJ Stater, 031. 



Loraotuir* Cnunmw, AaNav, Pfyt&gut, iv. 371 ; AfptnJU, x\x.i Hirtory of BritUx Rm> 3 cd., 170. 



Far. vuoikosa: fronds various: early fertile ones tall, erect* narrow, linear-lanceolate, 

 bipinnate below, with oblong-acutc, ndnate, inciso-scrrnto, or lobctl pinnules, 

 having aristato Incurred teeth ; barren ones shorter, with oblong blnntish 

 pinnules, adnatc or decurrent; later fertile ones broader, with oblong bluntish 

 crciiftto-sorrato pinnules ; anterior and |>ostcrior basal pinnules of the lowest 

 pinuas nearly c^iual in size. 



Lwkii* c iihTATA fa clioisom. ifew, Tr****rthn* (ftfttanifiit Scritty of KJM*r$\, W. ICO; PlytoUfiMt, ir. 



UO; IlonJtwk tf ffritM Ftm t 115. lMin$U>n, Manwt tf ltrilUK JU/tany^\(K 

 Ijaiwa VWim, yturn**, PAyl«b9irf t iii. 070> 



AiriDitru ipistui-wrsf, IMer and Ar#4t t UritUX Fkr#, C71 (in prt). 

 Asnoicw mm«mf^. vueiscoiot, J. tfmw; JW, JIMjiImW Aiw t 17. 



Uruoura rU0IK«CH, AV*™m. PkytotyUt. iv. SHI ; Afftrii*, 1». | //^r*fy t/BritUk Frrmr, 103. 



r</,\ sprjnjLOSA: see L.vstiika hpintlosa (Plato XXL). 



EXPLANATION OF THE PLATES. 



I'U" .\ QL— LiffVA CuisTATA ; fftTO lUvivv, Norfolk ; Br. AtUlin. 



rj-\Tx XX*— LuriiEi cniiTAi x tlioixosa ; i ultii-atHl i (from Oitnn llog, Notlin^bajtukiiv j /. IJofJ*) 



HADITAT.— Tbo ^\ant wbieli wo rc^uil ft* tl>o Ijjju of this group ii mre .mi-: load in UiU comity It occurs in bogpj 

 Mlimtioiui. TruAtutirthv roconb of ju viiitcniv t|Tpmr to bo rotitfu^l lo tlio counlic* of Norfolk nud SoltbU: in tbo 

 wi t wboniXT it »trcUbw woitwwd to th*»o of NoUmxtttm and Cl>crtcr. HualiogiUi ami Staff»rJ4iiro hm alto 

 Ih«i rrportcd, uid aro »uflIcioatl/ probable, but thc*c t together with n?mo othrr Ktt^liih ai well ai Scotcli ubJ IriiJi 

 coautir*, ritW nN|iurt* oonflmiatJoti or arc altoo^thcr crrocKoua. Tbo variety ittyiaw occun with cnW*r/*t in 

 Norfolk, Notlingtanuhire, tun] Cbc^btrc. It luu *W Iwn rcportMl froao r^ipini^ in Kwi t vn Ihc authority of 

 M r. NniM ( i F nbo ihouM bo luiiliar wttb it j but all tlv Emkx t>x*tnfh* WC havo *ccn under thi> nn»r-e f arc to ua 

 undiitiiigiiiihablo from tpi*ulw* r Mr. Watwm ratinulra iU mifzc in attitude, aa fiteoding from tbo mn lmLjIo 

 aU^tilOOrrtiabotLMt 



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