Lori, what lovely photos. Are they all Arabis androsacea? Are they in your garden?
Mine has not bloomed yet so I am not sure what they will look like.
I just found the correct name, I turned it around from Draba androsacea, which is a synonym for Draba fladnizensis Wulfen . Thank you so much for bringing this to my attention.
http://www.edelweissperennials...