LEAF SPOTS amphigenous, subcircular to irregular, at first yellowish-ochraceous, brownish, finally sometimes greyish, with an indefinite margin or rarely with a narrow, dark marginal line, 2-12 mm diam.
CAESPITULI amphigenous, punctiform, greyish white.
CONIDIOPHORES (cp) in small to moderately rich fascicles, arising from stromata, emerging through stomata, sometimes erumpent through the cuticule, loose to fairly dense, erect, subcylindric to flexuous, somewhat geniculate-sinuous, straight, 0-2(-3)-septate, hyaline, smooth, 10-70 x 2-5 µm.
CONIDIA (c) catenate, ellipsoid-ovoid, subcylindric(-fusiform), hyaline, smooth to rough, 0-1(-2)-septate, (8-)10-35 x 2-5(-6) µm; ends obtuse to subacute; hila slightly thickened and darkened.
PLANT HOST AND DISTRIBUTION. Ramularia lysimachiae affects different plant species of the genus Lysimachia (Primulaceae) growing in Asia, Europe, and North America (Braun 1998).
NOTES. The teleomorph of R. lysimachiae is Mycosphaerella lysimachiae Hohn.
Braun U. 1998. A monograph of Cercosporella, Ramularia and allied genera. Vol. 2. IHW-Verlag.