192 



FOSSIL PLANTS. 



Nillsonia. Two species in the lias. 

 Zamia. Fifteen species in the oolite and lias.* 

 One species from a deposit unknown. 



STEMS ONLY KNOWS. 



Cycadeoidea, Buckland, Mantellia, Ad. Brongn. The Fol- 

 lowing dicotyledonous plants are of doubtful affinity : 

 Phyllotheca, annularia, bechera, asterophyllites, &c. 



As this last genus is of frequent occurrence in the coal, 

 we subjoin a figure (130) and description of asteropliyllites 

 foliosa, Lindley and Hutton, PL 25. 



FIG. 129. 



FIG. 130. 



Aster opJiyllites. Bornia, Sternb. ; Bruckmannia, Sternb. 

 Stem scarcely tumid at the articulations, branched ; Leaves 

 verticillate, linear, acute, with a single mid-rib, quite distinct 

 at their base. 



Twelve species in the coal formation.t 



One species in the transition rocks. 



This is considered to be an extremely heterogeneous 

 assemblage, comprehending nearly all fossils with narrow, 



Pict. Atlas pi. iii., fig. 5. 



f Pict. Atlas, pi. v., fig. 10, 11. 



