https://www.botanic.cam.ac.uk/the-garden/plant-list/liatris-spicata-floristan-violet/liatris-spicata-floristan-violet-20150847-a-2-2/
Liatris spicata 'Floristan Violet' 20150847 A (2) - Cambridge University Botanic Garden
liatris spicatacambridge universityviolet