OF CKETAOEOUS PLANTS. 



251 



Text-fig. 8.— CljOlllfritr^ (Enrginiltt (Brongu.), Sternberr,'. A cljui-acter- 

 istic spet-imen of tlie "species." Nat. size. After Brongniart. 



V. 88, V. 88 a. N'umerous ramifications of the branched 

 " thallus " penetrating the eandy matrix in various 

 directions. The branches are ^yhite in colonr and 

 C3'liiKlrical. In section they appear as circles scattered 

 in the matrix. LoTver Greensand ; Bignor Park, 

 Sussex. Efjerton Coll., 1882. 



5570,5573,5574, 5575, 5576, 5577, 5579, 5579 a. Similar 

 spociiiicns from the Greensand. Manti'll Coll. 



