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Plate LI. c. 



THE DWARF ADDER'S TONGUE, 

 (Ophioglossum lusitanigum). 



OPmOGLOSSUM, LintUBW. 



Clours nf fipwnm* naked, arranged in a ample difttichoofl Spike, forming a run 

 tmcted branch of the frond. Sjfow-ca&es uuiserial along each margin of the 

 compressed spike, leathery, without reticulations, horizontal, globose, but sunk 

 iu or connate with the spike, opening in two valves transversely to the axis. 

 Veins (ccosbite in British 8|>ocies> uniform, reticulated in elongated hcxagonoid 

 nrcolcs, with or without free included mnttts* 



0, LusiTANictJM; fronds solitary, or two-three from each crown ; barren branch linear 

 or linear-lanceolate, small, thick, fleshy ; fertile branch linear-oblong apiculate, 



OmiOOtOMrM l.ratraxlCClf. /^aoovj, $/wiVj FUatervm, I'lv \fwrr r J'fpuljt HUforf t/f Britith lfrrnw, 



2 «L 1&5. t, 22, fig. it. ^nwi, ItUt&y *f tiritiih IViw, 331* ^*rrfy, ftn* <f Gml Itritaiu, S2, 

 1. 47. JVa&ay/M, Mmm! cf llritiA Brt**f t 4 «L, 120. UWJc*** t $w« PUntim**, r. 50. Jfcr*-jr/ ( 

 8/tt**m rtftfalilium, ft. 22. IW*l f S*ppU*fMtn*t Tt*tem*b Pttri&fnp***, GO. ifoher a*J Greriik, 

 /mm Bfonv, t. SO, /Jja/fry, /VpAi*lr A*i'iip.b». 2 cd, 77. (fignro). 



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EXPLANATION OF THE PLATE, 

 Plate LI. 41. Oi»n ion lose ru LVtlTAXiccu : from Giionnvr; <?♦ MV^yaul C. Jack***, 



HABITAT.— Tib diminutive ijwrira ira* found in lSJi b/ Mr, G. Wolwy. to the noirfibowbood of Petit Dot Bay, on the 

 touth oxml uflhc hUndof GtJttlifttjs xuit) it luuaiurc Wn found abundantly in o4WLvatilit* h that ivland, nhiwv 

 both Mr. Wo1«t at id Mr. 0. Jaciwn U« fumiiiwd apmowna. It awns probable that a diluent **** wonlil br 

 mnruVil by it» discovery in th* utttera <**roti« of England* or in Irrland. It mu*i, ImmflT, b* *o*ghl in 

 midwinter. 



OEOOBAPmOAIi DISTBIBUTION^-tWi Foti U found in the Kuttpnm <*iinlri* bolder^ the McJi^r™««^ 

 r^rtttfi*!, SjMin, France, Ilnlv, Sicily and ( J rvoct% a* %A\ a- in many of lb* Mnncb of that m It rtows aba nt 

 Tnn^ww, AJgjt-n, and probably olmmnorc, CO tho African «<ut j and intbc Atlantic Maim!* : tbo Cmaim, Madron, 

 Tracrifie, and tnc Awro-, It m again frond at Snan River, and in Now VnAuA <//o. //rohr). A cWly allkd 



l.Uia, |H;f:. i; > M.-JLlJL*] *iiJi ♦■„0, l , Km, f-iujj.i ) v Mi-.^i.n, iit S:. Gifa i I, H I i Lhi'm mti il.ir I nit Utn r ; 



wilb in JCcw Grenada, in Jaw, and in Boruro* A TaMtianian plant n'fcrtvil bcro in tlic Hm^< rmn Hrrbariutn, 

 ■> ■ ... j. t r„in. K bimtvr in il- frondu ; anotbrr from the lale of Vbm, U brill tA3!cr ai>d broa.lw ; and n tl.inl from 

 St, Hitem, 18 a!eo broader. Tlje*o nro aJl at Ica*t rlcvelv allW to O. U*it*aieu#. Tfco 0. tiMiwit «f CoUwo. 

 from NV» Zi-jUtuI, U a diminutiie of thu norttatly vault i 



PfWiCS. 



Conn-tike Crown forming a thickened, oblong-fnsilbrm blunt descending axis (rhizome, Prcsl), the 

 terminal bud or growing fioint conical, and enclosed by a few brown membranaceous sheath* Root* 

 4x>arso, brittle, fleshy, spreatling or descending, unbranched, growing irregularly from the axitf, one (or 

 more?) ljccomtng elongated in a stolon-like manner, and producing a new crown towards lis extremity. 



SlijUis erect, smooth, cylindrical, succulent, one-third to one-half tho height of the fraud, furnished 

 with two or three slender vascular bundles, the base enclosed by membranaceous sheathing scales, 

 which are taper-pointed above, dilate*! below; <Uvided into a sc]»amto fertile and barren branch or 

 terminating iu a barren frond. 



V&wtiim plicate or folded straight 



Fronds from one to three inches high, thick ami fleshy or succulent in texture, of a pale-green 

 colour. Sterile rtulical froiuts (commonly but not always accompanying the fertile frauds) limrar- 

 lanceolate, smooth, tapering below into the stalk or stipes. Sterile branch of the fertile fronds linear. 

 or more frequently linear- lanceolate, tapered below to its junction with the fertile branch, spreading, 

 bluntibh. from throe-tourths of an inch to one and a half inch long, somewhat clovatetl at the margins. 



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