Explanation of Pl. XV. 
Hhododendron. Kawakamii Haya. 
Fig. 1. A branch. 
2. A leaf, seen from above. 
2. 'Phe same, seen from below. 
4. 5. Dots on the lower surface of a leat. 
6. An outer-most bract of a flower-cluster. 
1T. S. Braets of the inner series : 
9. An inner-most bract. 
10. 11. Flowers. 
12. An calyx-lobe. 
13. Corolla, (expanded.). 
14. 15. Stamens, seen from different sides. 
16. An ovary. 
lY. An ovary, disc-glands seen. 
18. A fruit. 
19. 'The same, valves expanded. 
20. 21. Seeds of different shapes. 
22, An albumen. 
23. An embryo. 
21. The same, greatly magunified. 
