Endophyte-host associations in forage grasses. IX. Concerning Acremonium typhinum, the anamorph of Epichloë typhina

Acremonium typhinum Morgan-Jones and W. Gams, the anamorph of Epichloe typhina (Fr.)Tulasne, is described and illustrated in vivo on host grasses, from collections made on Agrostis hiemalis (Walt.)B.S.P. and Elymus canadensis L. in Texas.Cultural characteristics in vitro of isolates of the fungus made from leaf sheaths, stems, seeds and stromata are also documented.Comments are offered on the nomenclature and taxonomy of anamorphic fungal endophytes of forage grasses classified in Acremonium Link, section Albo-lanosa Morgan-Jones and W. Gams.author noted the presence of slender, septate, sparsely branched hyphae in stems immediately below stromata and determined that conidia, and later perithecia, develop from these.The truly endophytic habit of the fungus was documented in a detailed study by Sampson (1933) who showed it to be present intercellularly within tissues of leaves, stems and seeds of a number of grasses including Dactylis glomerata L., Festuca rubra L., and