Explanation of PL XTTT. 



VisGum Querci-Mbrii HAYATA. 



Fig. 1. The plant on Quercus Morii HAYATA. 



2. A branch. 



3. A male flower in an involucre on a node. 



4. The same, seen from a little above. 



5. The same, involucre taken off. 



6. A female flower bud in an involucre. 



7. The same, involucre taken off. 



8. Another female, fully grown. 



9. A sepal of the same flower. 



10. Another female flower, more advanced, sepals fallen off. 



11. The same, seen from a little above. 



12. Vertical section of the same. 



13. A young fruit. 



14. A mature fruit. 



15. A seed with a viviparous embryo. 



16. Another seed. 



17. The same, seen from side. 



18. Another seed. 



19. The same, seen from side. 



20. An embryo, taken from a fruit, shown in Fig. 14. 



21. A node of a branch. 



22. A portion of a branchlet. 



Fig. 1, reduced; 2, natural size; others more or less magnified. 



