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Plate VIII. 



THE MOUNTAIN PARSLEY FERN, or ROCK BRAKES 



(Allosokus crispds). 



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ALLOSORUS, Jicmhard 



r. 



Clusters of Spore-cases round (or elongate oblong), springing from near the apices of 

 the venules, distinct, at length becoming laterally confluent fnditsium none, 

 simulated by the involute unaltered margins of the pinnules of the contracted 

 fertile fronds which cover the sori. Veim suuplo, or forked from a distinct 

 venules disunited at their extremities, 



mid vein ; 



A, crispto: fronds of two kinds, ovato-dcltoid, bi-tri-pinnate ; ultimate divisions of the 

 sterile fronds obovate wedge-shaped, often bifid: of the fertile linear-oblong j 

 sori roundish. 



Auoaoaca CEiirca, Ikr*k*rJi t Stlrt&r** Kmm J**rx*t <frr ifcahmi*, 1SQC, I pU u. G ( 30. MuyfeE-, -VW*J 

 $f BrtiUK fitftxy, iOS, Ifafea, Ffori$r*plU Brit<m*i** t ir. 47. A«r»im, HUtery if BritiA Fens, S& 

 Mo*r, % tI*n<lM;tfJtritUk *&**,&. &*crty. Frw, ttl, L 39. %r^ &t*w* r<*tMNmm t W. IB. 

 Prut, Tmttmt* PttrU<$r*pM<t t 1S2. 



AlMEOECa StlXLlEl, IhypmU, Btitrfyt ;ur J^&mWW* &* Jfrut**« Jfrfeto, (/)»/« Crypt* 

 pttifm* ratcuiarittn in Imj*r\a Amvuo) iiL &U 



Oaureiu cw*ri, XAmmit o>w* Fl**t«rmm, 1522, ifefewi, filfe* XrUmA^ 10, t. 7. 



0«ML B *p.t ErrEbTEta, Salidvrjt ProJnmu*, 102* 



Pterie o-Wa, /taa-rw, Jftf. S**tt t Fton Jfrfo^fcu. 11» ( Apfe! Ar«ij f *til t. 1100; Aflatf 



*7<w*. ir. 300. SMwte 9 K^* fm faltat*kte,ilO.Lto. JntlJeno^SftttsMjHUrum^.Zm. 

 PttEJj SutLEEi, GaifiiN, AM G*i«nA™ ^tW. i*tfro/wJi7<»* (170S), iiL t, 13; f. L (KupprechU 

 l*rni« TEXriroLi*, Z*bwiy*, >*Jto Fr**i*"* t I 13. 



ACEO*TCClir/M CftlarVM, FiJflftrJ, /JitfaiTv ,iV., />&*/« «fe JtapltV, iiL S»3. 

 OXOCLU CBUPA, I{<tf«amn r DwteAfoaJ* Ftore, tl 1L 



CEtnooEAWHA cei.pa, A *«**, 4*p»* fo /WfcV* Jtiamaffr */ 1 Jbrrwy ** '** JW*f &«. Wfc SW. 



Ifa&rr and Anott, Uritiih Fttra. 575. Junfeayt Fhra Uiter*i** t ZVi* 

 PuoEOU>nc* cmanra, /*««■*, aiW« A b &•«>?/ AWcm* * P*rU t vL 20L ifr, tfe*e« AUnMb 130* 

 SfBOAVU oyocitoinia. Or*/, AW*™/ *frr«pm*jif efUntith Fla*U a iL lit. 



EXPLANATION OF THE PLATE. 

 I'UTE VIII,— Alloioevh camrva; from ConUtotic, Lancashire, Attit Ji, Jkrttr. 



i'ni 



HABITAT*— Tlut Fern b met with ralW plentifully. though locally, on tho mountain* oT &»tLui«l and tLow of the nc€th,„ 

 i**rt* of Eugbnl a «jJ <wurt •putngty in a few lO-Wtrn^l vtttidM in the -UtiricU of tho M>r*j» iho Trral. End tho 

 Sfcrcro. Ebo m DwoOAEiiT- In Walt* it ow-nr*. though not abundantly, in wt-frtl o^uiiv., in the north, including 

 the Snoudon diitrict. whilo In South Wale* it U more rare. In lr«Ui»I it b nbo mr* f bom* rccuriod only from Iho 

 ^italics of Down, Antrim, and Jxiutb- It b a roountain plant, preferring rocky u tuition*, and <kli s htins to gro* 

 among bouUew and toete rtoiirt, *hero it b protected from cicrx of nwbtuw. It occur* nnrly at the « level in 

 the moor* or LattmUra. In North Wale, it dneeoda to about «0 fret, and in tho Wcvt Highlatidj it aaecoda to an 

 elevation *>f u|wanU of 3000 feet— 1150 yard* according to Mr. Walton. 



GK0GRAPH1CAL lil^TICElIUTION.— The iipeeira b *yely dUpcraod om Europe, occurring to the north, in LnpUnd. 

 Nonray, S«e*kn ( and l>mtiiark ; again, w Qrv»t Kritain and IrelAnJ ( in flemiany. Hungary, Switxeriand. and 

 Franco; and thence CEtmdiitg ^uth«m>li into Spain and Italy, It Ea found at SitU (irt //oo*w). Kaulfuw 

 report* it rrom Unahuciifcfl, on i^^ \ n n 10 y <M [ t 1 > lcific q^^ ( fcut , hJa pIa(| ^ ^ Wd| Kupjirecht name* Atfaoru* 

 /owb/«E, b probably identical «ilh tho Cryptoframma amttitlriJt*, R. llrown. TV Rv-t Indiaa &jptqr*mm* 

 Britmniatto a wry doubtfidly diKtinet from A, cWjoki, 



Cauda small, short, tufted, erect or decumbent v scaly. Scales membranous, pale brown, subulate, 

 Fibres numerous, branche*!, dark brown, wiry, and slightly covercil with small hair-like scales. 



Stipes as long as, or usually longer than the frond, pale green, slender, smooth, with a few scattered 

 scales near the base ; adherent to the caudex. Jtac/ns smooth. 



Vernation circulate. 



Frond from four to twelve inches high, including the stipes, herbaceous, of a lively green, terminal 

 on the caudex, triangular or ova to -triangular in outline, of two forms, and hence described as 

 dimorphous. SterUt fronds leafy, usually about as long as the stipes, bi- or tri-pinnate, smooth. 



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