Ramularia veronicae Fuckel

LEAF SPOTS amphigenous, subcircular to angular-irregular, 1-5 mm diam, at first pale greenish, yellowish-ochraceous to pale brown, later dull greyish brown, occasionally greyish white, with an indefinite margin or a narrow darker border.


CAESPITULI amphigenous, usually hypophyllous, punctiform, subeffuse, greyish white.



CONIDIOPHORES (cp) in small to moderately large fascicles, originating from hyphal aggregations, emerging through stomata or erumpent through the cuticule, erect, straight, subcylindric to geniculate-sinuous, simple, aseptate or sparsely septate, hyaline, smooth, 10-40 x 2.5-5 µm, sometimes longer, filiform, up to 100 x 1.5-3.5 µm.


CONIDIA (c) catenate, frequently in branched chains, ellipsoid-ovoid, subcylindric, fusiform, hyaline, almost smooth to verruculose, aseptate or 1-septate, (6-)8-22(-28) x (2-)3-6(-7) µm; ends obtuse to subacute; hila small, slightly thickened and darkened.


PLANT HOST AND DISTRIBUTION. Ramularia veronicae affects different plant species of the genus Veronica (Scrophulariaceae) growing in Asia, Europe, and North America (Braun 1998).


Braun U. 1998. A monograph of Cercosporella, Ramularia and allied genera. Vol. 2. IHW-Verlag.