Ramularia chamaedryos

(Lindr.) Gunnerb.

LEAF SPOTS amphigenous, subcircular to irregular, at first yellowish-ochraceous, later brown to greyish brown, finally greyish white to dark brown to almost black, 1-10 mm diam, with an indefinite margin or a narrow moderately wide dark border.


CAESPITULI hypophyllous, punctiform, subeffuse, greyish white.



CONIDIOPHORES (cp) in small to moderately large fascicles, originating from internal hyphae or stromata, emerging through stomata or erumpent through the cuticule, erect, subcylindric, filiform to moderately geniculate-sinuous, simple, sometimes branched, aseptate or septate, hyaline, smooth, 10-70 x 2.5-5 µm.


CONIDIA (c) catenate, frequently in branched chains, ellipsoid-ovoid, subcylindric, hyaline, almost smooth to verruculose, aseptate, 8-18 x 2-7 µm; ends rounded to subacute; hila small, slightly thickened and darkened.


PLANT HOST AND DISTRIBUTION. Ramularia chamaedyros affects Veronica chamaedrys L. (Scrophulariaceae) growing in Europe (Braun 1998).


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