PLATE XXVIII. 



Layroila dentata (Elmer) Hayata. 



Pig. 1. The plant. 



2. A deformed llower. 



3. A riower. 



4. Tlie same, a part of the calyx taken off, the corolla seen. 



5. The same corolla, laid open. 

 (). A stamen, seen from without. 



7. An ovary. 



8. The same, in vertical section, much more magnified. 



9. The same, in cross section. 



10. A capsule. 



11. The same, after openiug. 



12. A seed. 



IH. An embryo. 



