Abstract
The recent checklist of macrofungi of Teton and Yellowstone Parks (McKnight 1982) provides a foundation on which to develop a more extensive floristic study. Collections of fungi and measurements of soil moisture were made in and around the Parks during the summer and early autumn of 1982 directed toward (1) adding to the number of species known to occur there; (2) comparing the mushroom species fruiting on 11 different forest stands over a 12-week period; and (3) elucidating possible correlations with mushroom fruiting and soil moisture.