This is a leopard's bane. The leopard's bane has been one of my favorite flowers for a few years now. I discovered it when I was a kid, and I went shopping for perennials with my mom and my grandma. I was allowed to go pick out a couple of plants of my own. I chose a leopard's bane. Its bright yellow flowers stood in stark contrast to my mom's flowerbed, which was a uniform pink and purple. My grandma was aghast that I could choose such an "ugly" plant. The leopard's bane thrived, and eventually even my grandma asked if she could have some to put in her garden. I have several plants now, and each one can produce 40 or more flowers at a time! This bud is just about ready to burst.