Abstract A description is provided for Trichoglossum hirsutum . Some information on its associated organisms and substrata, habitats, dispersal and transmission and conservation status is given, along with details of its geographical distribution (Africa (Algeria, Cameroon, Congo Democratic Republic, Ghana, Malawi, Morocco, Nigeria, Sierra Leone, South Africa and Tanzania), North America (Canada (British Columbia, Ontario and Quebec)), Mexico, USA (California, Connecticut, Florida, Idaho, Indiana, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Ohio, Oregon, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, Washington and Wisconsin), Central America (Costa Rica and Panama), South America (Argentina, Bolivia, Brazil (Goias, Parana, Pernambuco and Rio Grande do Sul), Chile, Ecuador and Venezuela), Asia (China (Anhui, Gansu, Guangdong, Hainan, Hebei, Heilongjiang, Hong Kong, Hunan, Jiangsu, Jiangxi, Jilin, Sichuan, Yunnan and Zhejiang), Georgia, India (Assam, Himachal Pradesh, Madhya Pradesh, Maharashtra and Uttarakhand), Indonesia, Japan, Malaysia, Nepal, Russia, Sri Lanka, Taiwan, Thailand and Turkey), Atlantic Ocean (Bermuda, Portugal (Madeira), Spain (Canary Islands)), Australasia (Australia (Victoria) and New Zealand), Caribbean (Cuba, Dominican Republic, Jamaica and Trinidad and Tobago), Europe (Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Montenegro, Netherlands, Norway, Poland, Serbia, Slovakia, Sweden, Switzerland, Ukraine and UK), Indian Ocean (Mauritius), and Pacific Ocean (New Caledonia)). No reports of negative economic impacts of this fungus have been found.