PLATE XXI. 



Ärkmlsia oligocarpa Hayata. 



Fig. 1. The pLiut. 



2. A liead. 



o. A female flower. 



4. A perfect and sterile flower. 



5. The stamens of the same flower. 



6. The upper portion of the style of tlie same 

 flower, 



7. The same, more magnified. 



8. A stamen of the same flower. 



9. The upper portion of the corolla. 



10. An Achene. 



11. An embrvo. 



