EXPLANATIONS OF THE PLATES. 23 



Plate VI. CHAMiEBATIA FOLIOLOSA, page H. 



Fig. 1. A flower, magnified. 



2. The same laid open longitudinally, more magnified. 



3. A stamen, front view, more magnified. 



4. The same, back view. 



5. The fruit enclosed in the calyx, magnified. 



6. Longitudinal section of the same, somewhat more magnified. 



Plate VII. CARPENTERIA CALIFORNICA. Tab. VII., page 1^ 



Fig. 1. A petal of the natural size. 



2. Front view of a stamen. 



3. Back view of the same. 



4. A capsule, with the persistent calyx, showing the manner in which the 



exocarp separates : slightly magnified. 



5. Longitudinal section of a capsule, exposing one of the placenta3, more 



magnified. 



6. Transverse section of the same. The notches in the margin indicate 



the lines of dehiscence of the exocarp. 



7. A separate cell, or carpel, after the removal of the exocarp. 



8. A seed, highly magnified. 



9. Longitudinal section of the same, equally magnified. 

 10. Embryo, still more highly magnified. 



Plate VIII. HYMENOCLEA SALSOLA, page 14. 



Fig. 1. A staminate head, moderately magnified. 



2. The involucre of the same, with a single staminate flower, and the chaff 



at its base. 



3. A staminate flower laid open. 



4. One of the stamens, considerably magnified. 



5. Style and stigma of the sterile flower. 



6. Fructiferous involucre, magnified four or five times. 



7. The same, cut open longitudinally, showing the enclosed achenium and 



the seed. 



8. Transverse section of the fructiferous involucre. 



9. An achenium, with its persistent styles. 

 10. The embryo. 



