78 



Cellulae radii integrae, sed cornubus binis apiculatae; 



discus continuus, strato saepe duplicate (ANOMOPEDIUM) 



cell, suborbiculares, radialium cornubus brevissimis . 4. integrum 

 Cellulae radii emarginatae, bilobae velbifidae; 



lobi cellularum radialium apice simplices (DlACTlNiUM) 



discus continuus, cellulae radii altius coniunctae ; 



cell. rad. levissime emarginatae, muticae vel 



submuticae 5. mulicum. 



cell. rad. late et leviter excisae, cornubus distan- 

 tibus brevissimis obtusis, aeque ac margine ex- 



cisurae tuberculato-crenulatis 6. vagum 



cell. rad. lunatae, lobis distantibus acutis . . 7. Selenaea 

 cell. rad. medio sinuatim excisae, loborum an- 

 gulo externo subapiculato, interno in cornu 

 breve obtusiusculum vel truncatulum acuminate 



(membrana cellularum laevis) 8. angulosum 



cell. rad. bilobae, lobis arcuatim convergentibus 

 longius acuminatis et in cornu acutiusculum 



sensim abeuntibus 9? forcipalum. 



cell, radii emarginatae vel breviter bilobae, cor- 

 nubus linearibus terminatae; 



cornua obtusiuscula vel capitellata ; 



membrana cellularum leviter 



punctata 10. Borjranum 



membr. cell, evidenter gra- 



nulata 10. /3. granulatum 



'. cornua apice bidentula .... 1 1 ? bidentulum 

 cornna obtusa, lobi ad basin cornuum 



exterius constricti 12? constrictum 



discus interrupts; cell. rad. ad basin tantum coniunctae; 

 cell. rad. ad medium vel ultra bilobae; 



lobi ovati, cornubus gracilibus elonga- 



tis terminal! ; (cell. 4 lacunam mediam 



includentes, rarius medio contiguae) . 13. gracile 



lobi sensim in cornua breviora atte- 



nuati, sublaeves ; 



lobi erect! ; cell, disci emargt- 

 natae; lacunae mediocres . l4. pertusum 

 lobi erect! ; cell, disci vix emar- 

 ginatae; lacunae parvae . l4. /3. micropnram 

 lobi erect! ; cell, disc! bipar- 

 titae; lacunae permagnae . l4. 7. clathratum 



