56 G. MISl'TENIIJS. 



lamina 3 1/2-7" longa, 9-16'" lata , spathulato- vel elongato- 

 obîonga, obtusa, margine attenuato calloso integerrima; costa sub 

 apice evanescens; nervi plerumque validi, in utraque pagina vel 

 supra proéminentes, origine circiter 1 l/2 rrr distantes, plerumque 

 bifurcati, inferiores sub angulo 70° decurrentes, superiores ma- 

 gis adscendentes, supremi flabellati; rami in decursu liberi vel 

 hine inde anastomosantes, omnes arcu intramarginali immerso, 

 ab margine attenuato remoto confluentes; fertilium petiolus 4-5 f 

 longus, lamina 4-5" longa, 9'" lata, lanceolata, basi longius atte- 

 nuata in petiolum decurrens, apice attenuato obtusa, supra ner- 

 vosa, infra sporangiis onusta ; paraphyses paucas articulât^ spo- 

 rangiis admixtse. 



«Balade» (1537). 



Inter species, nervis arcu intramarginali anastomosantibus prseditis, 

 generi Aconiopteridi Pr. (Fée) adscriptas, cum nulla nisiA. obtuso Fée 

 (Acr. 80, t. 40, f. 2) comparandum; in hac autem arcus nervorum ma- 

 nifestus et margini approximatus, non immersus et remotus a margine 

 attenuato. Adhuc autem, ut videtur, genus Aconiopteris eas species 

 tantum recepit, quarum arcus intramarginalis proeminet vel luce opposi- 

 lus nullo negotio observatur, dum species, arcu nervorum intramarginali 

 immerso, nisi maceratione vel epidermide et parenchymate circumdante 

 remoto detegendo prseditse, in variis sectionibus generis Acrostichi occur- 

 runt. Exempla prsebent inter Acrosticha Polylepidea : A. obductum Klf., 

 A. Bellermannianum Klf., A. muscosum Sw., inter A. Oligolepidea : 

 A. Sieberi Hk. Gen. , A. macropodium Fée. Hœc ultima A. Vieillardii 

 proxima, recedunt autem paleis rhizomatis et forma laminœ. 



3. A. (Leptochilus) varians, sp. nov. 



Rhizoma elongatum scandens radieulosum, paleis fuscis ad- 

 pressis imbricatis, 2-3'" longis, ovato-lanceolatis, squamosum ; 

 folia disticha distantia subcoriacea glaberrima, e basi cuneata late 

 ovata pinnatipartita difformia; phyllopodia abbreviata paleis 

 abscondita; sterilium petiolus 2-5" longus; lamina 1/2-1' longa, 

 laciniae 1-6-jugae, patentes vel erecto-patentes, ala 1 1/2-8'" lata 

 contluentes, sinubus acutis vel rotundatis distinctse, 4-7" longse, 

 7"-l 3/4" latse, oblongae vel lineares acuminatae vel apice atte- 



