Although thought of as a prairie state, Nebraska retains sizeable areas of both eastern deciduous and western pine forests. The state has five main western pine forest regions dominated by Pinus ponderosa. Three of these forests are naturally occurring - the northern Niobrara River Valley area of Brown and Cherry counties, the northwestern Pine Ridge region in Dawes County, and the Wildcat Hills area of Scotts Bluff County. Samuel R. McKelvie National Forest in Cherry County and the Halsey Unit of the Nebraska National Forest in Thomas County were both planted in the early 1900’s. Our lichen collections from these pine forest areas have revealed numerous new county records as well as additions to the state’s lichen flora, e.g. Pseudevernia intensa (Nyl.) Hale and Vulpicida pinastri (Scop.) J.-E. Mattsson & M.J. Lai. The lichens of the planted pine forests have are less diverse when compared to the naturally-occurring pine forests, but a few lichen species are currently known only from these man-made systems.

Key words: lichen, Nebraska, ponderosa pine forest