May, 1919] Nature of Diecious Co7idition 411 



2. Carpellate tree with a few carpellate catkins having some stamens. 



This tree was about hke the preceding in sexual expression. 



3. Carpellate tree with here and there a carpellate catkin having a 



few staminate flowers. 



4. Carpellate tree with a considerable number of staminate catkins, 



scattered here and there. In some cases the staminate catkins 

 were in the same cluster as the carpellate. Also some carpellate 

 catkins had a few stamens. This tree has female expression 

 with a strong male tendency. 



5. Carpellate tree with many staminate catkins and many mixed. 



There is a very strong tendency to male expression. 

 G. A tree with about half carpellate and half staminate catkins with 

 some mixed. The staminate are apparently slightly more 

 numerous. 



7. Tree with about an equal number of staminate and carpellate cat- 



kins, with very many catkins having both stamens and carpels. 

 A decidedly bisporangiate individual. 



8. Tree with about an equal number of staminate and carpellate cat- 



kins and also with some mixed catkins. 



9. A tree of about the same nature as number 8. 



10. An individual having about equal numbers of staminate and car- 



pellate flowers. Most of the catkins have both stamens and 

 carpels in varying degrees. 



11. Tree mostly staminate, with here and there a carpellate catkin or 



partially carpellate catkin on small branches in various parts 

 of the tree. 



12. Tree prevailingly staminate, with here and there a carpellate 



catkin; also with catkins having both kinds of flowers. Male 

 sex is characteristic, with a considerable female tendency. 



13. A tree prevailingly staminate, but with careful search showed a 



very few carpellate catkins. Male sex is expressed with a slight 

 female tendency. 



14. A wild seedling tree about 20 years old with a main central branch 



and three large side branches. One large branch had been cut 

 off. This tree was a staminate tree covered with staminate 

 catkins. Of the three large side branches two showed nothing 

 but pure staminate catkins. The third had reversed the sexual 

 state to a remarkable degree and was decidedly carpellate in all 

 of its parts. It produced over 1000 fruits which came to maturity. 

 However, the reversal was not complete for this branch produced 

 some pure staminate catkins and also some catkins with both 

 staminate and carpellate flowers. The main or central branch 

 was also purely staminate except that near the top of the tree 

 there was a small twig which produced four carpellate catkins 

 which developed into fruits. In this twig evidently the same 

 reversal of the sexual state had taken place as in the large branch 

 farther down. The large reversed branch was 4 inches in diam- 

 eter at the base and 12 feet long. 



