Light purple Pulsatilla vulgaris
Of course, my collection is missing the white one and maybe there are others I don't know about. I really want to propagate more of the red one so that I wil have nice big clumps of it blooming in the spring. They are showy and quite visible from a distance. Their seed is "ephemeral" as the seed companies call it, expiring not long after ripe, so I'll plant the fresh seeds as soon as possible. Maybe I'll have a bunch of plants for fall planting. They may require cold stratification to germinate, so maybe we'll have seeds planted in the fridge again.
I've only ever purchased these seeds from Gardens North, a seed company with lots of native plant seeds. I get all tingly and starry-eyed just looking at their online catalogs...and I see they're having a 50% off sale all this month. No, they don't pay me to advertise, I just order their stuff frequently! I notice they don't have any pulsatilla at the moment though.