Monochaetia

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Monochaetia is a genus of fungi in the family Sporocadaceae. Species within this genus are typically plant parasites or saprobes and can cause leaf spot diseases on a range of hosts.

Taxonomy and description:
- Kingdom: Fungi
- Division: Ascomycota
- Class: Sordariomycetes
- Order: Amphisphaeriales
- Family: Sporocadaceae
- Genus: Monochaetia (Sacc.) Allesch. (1902)
- Type species: Monochaetia monochaeta (Desm.) Allesch. (1902), noted for having a single apical appendage

Historical notes:
- The genus was introduced by Allescher in 1902, originally with 23 species.
- Allescher designated Monochaetia monochaeta as the type species.
- In 1949, Steyaert moved many Monochaetia species to Pestalotiopsis or Truncatella.
- A 1961 monograph by Guba recognized more than 40 species in Monochaetia.
- Index Fungorum lists 127 Monochaetia epithets as of March 2022, but most have been transferred to other genera such as Sarcostroma, Seimatosporium, and Seiridium.
- Today, according to Species Fungorum, many Monochaetia species have been reclassified into other genera.