LEAF SPOTS amphigenous, of a variable shape and size, at first almost invisible, later diffuse, angular-irregular, often expanded, at first pale greenish, yellowish, ochraceous, later brown, with an indefinite margin.
CAESPITULI amphigenous, mainly hypophyllous, punctiform to effuse, whitish.
CONIDIOPHORES (cp) in small to moderately large fascicles, developing from hyphal aggregations, emerging through stomata, usually divergent, erect, straight, subcylindric to flexuous, geniculate-sinuous, simple, rarely branched or deeply forked, 10-80 x (2-)3.0-6.o(-7.0) µm, aseptate or septate, hyaline, smooth.
CONIDIA (c) catenate, frequently in branched chains, ellipsoid-ovoid, subcylindric, fusiform, hyaline, smooth to verruculose, aseptate, very rarely with a single septum, (5.0-)8.0-24.0(-26.5) x (2.5-)3.0-7.0(-8.0) µm; ends rounded to attenuated; hila small, slightly thickened and darkened.
PLANT HOST AND DISTRIBUTION. Ramularia calcea occurs on different plant species of the genera Nonea, Symphytum, and Trachystemon growing in Europe (Braun 1998).
Braun U. 1998. A monograph of Cercosporella, Ramularia and allied genera. Vol. 2. IHW-Verlag.