PLATE XXVI. 



Riibvs Kaiuakamii HAY ATA. 



Fig. 1. A branch of the plant. 



2. A flower, seen from a little above. 



8. The same, seen from a little below. 



4. The same, in vertical section. 



5. A petal. 



6. A stamen. 



7. A carpel. 



8. A seed. 



9. A prickle with a truncate apex. 



1C). Another form of a prickle with an acute apex. 



