Elder Whitewash Fungus (Hyphodontia Sambuci) On A Mango Tree : (pix Sanjiv Shukla) Royalty-Free Stock Photography

Elder whitewash (Hyphodontia sambuci) is a basidiomycete fungal pathogen on deadwood, especially elder. It is resupinate, forming a thin structure which is white, pruinose (flour-like dusting) or chalky in appearance. It is inedible. It also grows on dead but still hanging branches of trees of various species, but rarely on conifers. It occurs in North Europe mostly on Sambucus nigra, but there is a much bigger spectrum of substrates in warmer regions.