Nitrogen Fixation in Ericaceae

In 1907 Ternetz provided evidence that certain strains of Phoma, isolated from the roots of ericaceous plants, could utilize atmospheric nitrogen. 2. In 1915 the necessary proof that the fungi extracted by Ternetz were actually the endophytes was provided by the writer, who showed also that seedlings of Calluna vulgaris in pure culture thrive in a rooting medium lacking combined nitrogen. 3. In 1916 Duggar offered additional evidence for fixation of nitrogen by members of Phoma.