Neocosmospora
Neocosmospora is a genus of fungi in the family Nectriaceae. The genus was established by Smith in 1899. Species in the genus are saprobes (processing of decayed (dead or waste) organic matter), endophytes (a fungus that lives within a plant for at least part of its life cycle), and plant and animal pathogens and they are commonly found in soil, plant debris, living plant material, air and water (Sandoval-Denis et al. 2019; Guarnaccia et al. 2021). Species
As accepted by Species Fungorum;

Neocosmospora arxii 
Neocosmospora boninensis 
Neocosmospora endophytica 
Neocosmospora floridana 
Neocosmospora indica 
Neocosmospora kurunegalensis 
Neocosmospora leucaenae 
Neocosmospora magnoliae 
Neocosmospora obliquiseptata 
Neocosmospora parva 
Neocosmospora rekana 
Neocosmospora rubicola 
Neocosmospora striata 
Neocosmospora striatispora 
Neocosmospora thailandica 
Neocosmospora tuaranensis

Uses of Neocosmospora species
Bioassay-guided fractionation of a fungus Neocosmospora sp. resulted in the isolation of three new resorcylic acid lactones, 'neocosmosin A' (2), 'neocosmosin B' (3) and 'neocosmosin C' (4). As well as three known resorcylic acid lactones, 'monocillin IV' (1), 'monocillin II' (5) and radicicol (6) which were also isolated and identified, where compounds 4–6 show good binding affinity for the human opioid receptors. These findings have important implications for the potential psychoactive effects with this class of compounds. References

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Nectriaceae genera