''Marasmius semiustus'' is a species of fungus in the family Marasmiaceae. It is a

plant pathogen Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomyc ...

responsible for banana plant disease commonly found in the West Indies. The only known remedy is the removal and burning of diseased plants. This fungus is also found in Malaysia, Hawaii, Taiwan, and

Costa Rica Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ...

. It was first described scientifically in 1869.

References

Fungi of Asia Fungi of Central America Fungi described in 1869 Fungal plant pathogens and diseases Banana diseases semiustus Taxa named by Miles Joseph Berkeley {{Marasmiaceae-stub