On this last day of Texas Native Plant Week, I started a list of Texas Natives also found here at my place. I stopped at 30, including a number of trees, not breaking down Quercus into the many oaks, not the Hollies.
The first wildflower on the list I read at a Texas site was Ageratina havanensis. I found an Ageratina species, possibly Ageratina aromatica, on one of my plant searches the other day, blooming on the west side of a fence that backs up to a pine thicket.
The name has changed from Eupatorium to Ageratina. It is related to Joe Pye weed and boneset, recognized by the lack of petals around the ray flowers. Ageratina altissima causes poisoning of cattle. When passed to people in milk, it causes 'milk sickness,' reported to have caused the death of Abraham Lincoln's mother when he was only nine years old. This loss along with some other deaths of family members was believed to have contributed to Lincoln's tendency to melancholy.