FUNGI FROM DWARF MISTLETOE INFECTIONS IN WESTERN HEMLOCK

Abstract

Nine ascomycetes and two fungi imperfecti were found associated with cankers on branch swellings caused by western hemlock dwarf mistletoe, Arceuthobium campylopodum Engelm. forma tsugensis Gill, in an investigation in the coastal forest of British Columbia. One ascomycete is described as Durandiella tsugae sp. nov. The following fungi are discussed: Lachnellula agassizii (Berk, and Curt.) Dennis, Caliciopsis pseudotsugae Fitzp., Capnodium spongiosum Barr, Durandiella tsugae Baranyay sp. nov., Helotium sp., Lophium mytilinum (Pers.) Fries, Mytilidion tortile (Schw.) Ell. & Ev. non Sacc, Retinocyclus abietis (Crouan) Groves & Wells, Biatorella resinae (Fr.) Mudd., Epicoccum nigrum Link, and Truncatella truncata (Lév.) Steyaert.