Wildflower enthusiasts here in Michigan eagerly await the appearance of lady-slippers toward the end of May. Many in the Botany Club group expected this treat when we got to the Upper Peninsula. But this year was cool, and few were open. South of the bridge there were many of them. This is one of our most widespread, common, and conspicuous orchids. It is more comfortable in more neutral soil than many of its relatives, but prefers basic habitats like fens. One chapter of the Club is visiting a local fen this weekend. They should see plenty of these. The flowers are about three inches across. The large yellow lady-slipper grows in AK, AL, AR, AZ(S), CO, CT(S), DE, GA(U), IA, ID, IL(E), IN, KS, KY(T), MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH(T), NJ, NM(E), NY(V), OH, PA(V), RI(E), SC, SD, TN, TX, UT, VA, VT, WA(E), WI, WV, WY, through Canada except for the Yukon, and on SPM. Lenawee Co MI, 5/26/11.