Following on from our trips to Austria last summer Carol and I are putting together a slide presentation. All is going well except for a correct caption for a slide of the small edelweiss. Looking through our books and on the web I have no less than three forms of its name, all equally well used and from reliable correspondents. The names I have found are: Leontopodium nivale; Leontopodium alpinum ssp. nivale and, surprisingly (to me) Leontopodium nivale ssp. alpinum. Is there a technically correct form of the name or will I just chicken out and go with the first!