I had previously seen plants that I thought were hoary vervain at Ives Fen Preserve even though they weren't flowering. I added it to the list of plants in the preserve, but was a little uneasy. Could they have been white vervain? Yesterday, I confirmed the ID, and shot this image. That makes 825 species in the preserve. In the meantime, number 826 came along, Powell's amaranth. Keep your eyes peeled for the next one!