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T^.NITIS. 



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FiLix bi-tripedalis, e caudice brevij terrae oblique immersOj radiculis multis 

 longis diffusis birsutis instructo, setisque atro-purpurascentibus vestito frondes 

 complures stipitatas efierens. . 



Stipites in plantis junioribus frondibus duplo longioresj m. adultis easdem 

 circiter aequantes, seque ac racbes tetragoni, hinc profunde canaliculatij utrinque 

 obsolete sulcati, glabri, nitidi, flavicante-virides , sub-bgnosi, adpinnar^m inser- 

 tionem fere crassitudine pennae corvinoSj caudicem versus sensim crassiores 

 setisque similibus vestiti. 



Frondes longe stipitatse, erectcCj pinnatGe. Pinnos ii-i3 (in planta juniore 

 plerumque 3-5), sub-oppositce aut sub-alternse, ereeto-patentes, lineari-lanceo- 

 latoe, 9-10 pollicares, f polL latse, plerumque in acumen longum producta; (plantse 

 junioris latiores et obtusx aut obtusiusculae), inferne ssepissime sub-oblique atte- 

 nuata;, margine sub-cartilagineo-incrassato insequali-repandae et sub-undulatce ; 

 glabrae, supra nitida^, saturate virides, venulosoe, costa angusta depressiuscula, 

 subtus dilute virides, costa elevata; inferiores magis extcnsoe, petiolis brevibus 

 sub-angulatis (in ilfb/wcca7z;5 sub-sessiles), apice sa^pe bifidos, aut ad basin usque 

 bi-tripartit^, aut foliolis compositae 2-3 sub-sessilibus, quorum lateralia minora; 

 superiores laterales sessiles aut adnatce, basi externa ad racliin sub-cuncato- 

 decurrentes, plerumque breviores minusque acuminatae, imo obtusae; terminalis 

 saepissime inferioribus paulo minor, brevius petiolata aut sessilis, integra, raro 

 bipartita. 



SoRi, paginam frondis inferiorem tenentes, utrinque costam inter marginemque 

 vittam referunt linearem, ab initio badiam, postea ferrugineam, a basi frondis 

 inde ad apicem adscendentem, rarius attingentem, continui aut, maxime infra 

 apicem, quidpiam interrupti, convexi , parum immersi, unde pinnae supra lineis 2 

 longitudinalibus notatai. Capsulce numerosae, minimos, ellipticce, pallide flavi- 

 cantcs, pedicello tenui sub-articulato impositae, ultra f ambitus annulo plano, 

 pallide ferrugineo, articulato, cinctas, corpusculis innumeris, clavatis, simplicis- 

 simis , basi tenuiore diaphanis articulatisque , apice incrassato sub-opacis et 

 materie grumulosa fusca fartis immixtis. ^y^or^ trigonse, palhdae, sat diaphana?, 

 laives. 



EXPLICATIO TABULARUM. 



TAB. xxviir 



Fls. 2, Frons sterilis cum caudice; magn. nat. 



TAB. XXIX. 



Frons fertilis ; magn, nat. 

 Fig. r. Segmentum frondis ferlllis ; auct. 

 Fig, 3. Corpuscula clavata , capsnlis admixta ; auct, 

 Fig. 3. Capsulae et sporse. 



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