680 SpHyEROcoccoiDEJE. Delessertu. 



t Frons indivisa, costa superne evanescente percursa, 



venis nullis. 



I. HOLONEURA. Frons indivisa, costa superne evanescente percursa, 



costulis nullis. (Sp. 1.) 



ft Frondes ramifications dichotoma decomposite, dichotomo- 



pinnatw. 



II. SCHIZONEURA. Frondes costa evanescenti percursw. Sort sphe- 



rosporarum rotundati, utroque lalere costce plures sparsi. 

 (Sp. 23.) 



III? CALOGLOSSA. Frondes costalie. Sori in apicibus segmentorum 

 aut in sporophyllis propriis ecoluti, subgeminati. Sphcero- 

 sporce in lineas a costa radiantes dispositce (Sp. 4.) 



IV. PTERIDIUM. Frondes cosfatfe. Sori in apicibus segmentorum 



aut in sporophyllis propriis evoluii subgeminati. Sph&ro- 

 sporce nullo ordine dispositft. (Sp. 5.) 



V. CRYPTONEURA. Frondes ancipiles, alis fere destitute. Sort in 



apicibus segmentorum aut in sporophyllis propriis evoluti. 

 (Sp. 610.) 



fit Frondes pinnatim decomposite; laciniis nempe lamina pin- 

 natijidte sensim separatis pinnatce. 



VI. STENOGLOSSUM. Frondes lineares pinnatce, pinnis ala decurrenli 



confluenfibus. Sori sphwrosporarum in segmentis termina- 

 libus aut in sporophyllis marginalibus evoluti, ulroque latere 

 costce singuli aut in unum confluentes. (Sp. 11 12.) 



VII. HEMINEURA. Frondes pinnatifuUe costa evanescente percursa, 

 costulis basi apiceque obsoletis. Sori sphcerosporarum ro- 

 tundati secus marginem laciniarum seriati, inter costulas 

 plures. (Sp. 13.) 



VIII. PIIYCODRYS. Frondes sinuato-pinnalifidfK costal^, costulis plus 

 minus conspicuis a costa progredientibus instructs. Sori 

 sphcerosporarum in segmentis terminalibus aul in sporo- 

 pltyllis propriis evoluti, utroque latere costce oppositi, ge- 

 minati aut in unum confluentes. (Sp. 14 19.) 



