Edited: Drabas (Genus Draba). I initially suggested that Need help: I am guessing possible Goldbloom Saxifrage (Saxifraga serpyllifolia), yellow, Mount Distincta area, Ogilvie Mountains, Dempster Highway, Yukon, June 27/07

Out of my experience: what appears to be a yellow draba. I initially thought possibly Yellowstone Draba (Draba incerta), but it is well out of known range. Yellow, Mount Distincta, Ogilvie Mountains, Dempster Highway, Yukon, June 27/07