Previous work by Wells in the Laramie Basin suggested that a coniferous forest/woodland covered the basin floor in the recent past (until the latest Holocene). We have found no evidence for this woodland and suggest instead that these scattered woodlands along sandstone outcrops and their immediate margins are outliers of the montane forest of the Medicine Bow Mountains, existing in their apparently anomalous locations due to favorable microenvironments set up by the topography and substrate.
Elliott-Fisk, Deborah L.; Adkins, Betty S.; and Spaulding, Jeanine L.
"A re-evaluation of the postglacial vegetation of the Laramie Basin, Wyoming–Colorado,"
Great Basin Naturalist: Vol. 43
, Article 1.
Available at: http://scholarsarchive.byu.edu/gbn/vol43/iss3/1