Some Lichens from Southern Colorado

The cryptogams of the San Juan and Sangre de Cristo mountains of southern Colorado have not attracted the attention of many botanists during the past half century. The published ecological and floristic studies of North American cryptogams show few records from any portion of Colorado further south than Pike\u27s Peak. Llano (2) and Thomson (3) make but incidental mention of lichens collected by visitors in 1899, 1937, and 1942. The collections listed below constitute a material addition to this very meagre record. All these specimens, collected in the period between February, 1950-September, 1951, were found at altitudes between 7600 and 9500 feet except Peltigera scabrosa which was collected at 11,000 feet