Neotyphodium is a form genus containing species of endophytic fungi. These endophytes are asexual, seed-borne symbionts of cool-season grasses, and grow intercellularly throughout the aerial tissues of their hosts, including shoot apical meristems, leaf sheaths and blades, inflorescences, seeds and embryos. The Neotyphodium endophytes produce at least four different classes of compounds with various biological activities (toxicity or feeding deterrence) against insect and mammalian herbivores.

Neotyphodium is a form genus containing species of endophytic fungi. These endophytes are asexual, seed-borne symbionts of cool-season grasses, and grow intercellularly throughout the aerial tissues of their hosts, including shoot apical meristems, leaf sheaths and blades, inflorescences, seeds and embryos. The Neotyphodium endophytes produce at least four different classes of compounds with various biological activities (toxicity or feeding deterrence) against insect and mammalian herbivores.