Explanation of PL I. 



foi'iinntfinum HAY ATA. 



Pig. 1. A bmiich. 



2. A hair on a leaf. 



3. A brancli of an inflorescence. 



4. A flower. 



5. An ovary, corolla taken off. 

 fi. A corolla, seen from above. 



7. The same, seen from l>elow. 



8. Stamens, seen from different sides. 



