New Host and Distribution Records from Pennsylvania Conifers. W. Merrill, Professor, Plant Disease Clinic, Department of Plant Pathology, The Pennsylvania State University, 210 Buckhout Lab, University Park 16802. N. G. Wenner, and J. D. Peplinski. Senior Research Assistant, and Coordinator, Plant Disease Clinic, Department of Plant Pathology, The Pennsylvania State University, 210 Buckhout Lab, University Park 16802. Plant Dis. 77:430-432. Accepted for publication 5 January 1993. Copyright 1993 The American Phytopathological Society. DOI: 10.1094/PD-77-0430.

Yellow broom rust of fir caused by Melampsorella caryophyllacearum: first record on Abies fraseri and southernmost record on Abies in eastern North America. Autoecious spruce needle rust caused by Chrysomyxa weirii: first report from Pennsylvania, first record of severe damage to Christmas trees in the eastern United States, and second record on Picea pungens. Seedling blight caused by Discosia pini: first record in eastern United States and first record on Pseudotsuga menziesii. Branch and stem cankers of P. menziesii caused by Dermea pseudotsugae: first report from eastern North America and first report of extensive mortality of Christmas trees. Branch and stem cankers of P. menziesii, Abies balsamea, and A. fraseri caused by Leucostoma kunzei: first record on A. fraseri and first record of extensive mortality of Christmas trees. Diaporthe lokoyae associated with chlorosis and dieback of branches of stressed Picea pungens: first record on P. pungens and first record in eastern North America.