PLATE 22. 



Fig. 1. 100. 4. Paljeophtcus simplex. 



1 a. A portion of a large stem, and section. 



I t. A fragment compressed and bent. 1 c. Section of the same. 



1 d. A small fragment, showing the groove along the side of the stem. 



(Pag. 63.) 



Fig. 2. 98. 3. BUTHOTREPHIS SUCCULENS. 



2 a. A portion of a large specimen, the branches scarcely compressed. 

 2 6. A single stem with branches, from another plant. 



(Pag. 62.) 



