EXPLANATION OF THE PLATE. 

 Plate CXCIII. Prosopis juliflora, var. constricta. 



1. A flowering branch, natural size. 



2. A flower, enlarged. 



3. Vertical section of a flower, enlarged. 



4. A petal, enlarged. 



5. A stamen, enlarged. 



6. A pistil, enlarged. 



7. A fruiting branch, natural size. 



8. Vertical section of a portion of a fruit, natural sis 



9. A seed, enlarged. 



