18 November 2017, Columbia California.
I realized that there is a growth anomaly on one of the buckeyes, and it was the buckeye that had the most pronounced fungal bodies of Eutypella. The branches of this buckeye has lots of bumps on them. The other buckeyes do not seem to have this problem.
Photos of the bumpy buckeye are at the top. Photos of a normal buckey are lower down on the page. Click an image to enlarge it.