PLATE 22. 
Fig. 1. 100. 4. Pa.mopHycus sIMPLEX. (Pag. 63.) 
la, A portion of a large stem, and section. 
1b. A fragment compressed and bent. 1c. Section of the same. 
1d. A small fragment, showing the groove along the side of the stem. 
Fig. 2. 98. 3. BurHoTREPHIs sUCCULENS. (Pag. 62.) 
2a. A portion of a large specimen, the branches scarcely compressed. 
2. A single stem with branches, from another plant. 
