Periglandula
Periglandula are a genus of fungi in the family Clavicipitaceae. They live as epibionts, in a symbiotic relationship with two species of plant, Ipomoea asarifolia and Ipomoea corymbosa. They are known to produce ergot alkaloids related to lysergic acid. References

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Clavicipitaceae
Hypocreales genera