124 ZYGOPHYLLACEiE. 



PLATE 149. GuAiAcuM (Guaiacidium) angustifolium, Engelm. ; — a 

 branch of the natural size, in flower and young fruit. 



1 . Diagram of the flower. 



2. External view of a stamen and its scale, magnified. 



3. Internal view of the same. 



4. The pistil, magnified. 



5. Vertical section of the same, and of the base of the stamens, petals, «fec. 



6. An ovule detached and more magnified. 



7. The fruit, of the natural size. 



8. Vertical section of the same, dividing the seed and embryo in one cell ; 



showing the seed entire in the other. 



9. Transverse section of the fruit, and of its two seeds. 

 10. The embryo detached entire, enlarged. 



