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DescriptionPycnidia: pale brown, subspherical, immersed or erumpent, 60-110 µm in diam.; wall: hyaline to pale brown, paraplectenchymatous, up to 20 µm thick; conidiophores: hyaline, irregularly branched, septate, smooth, with acropleurogenous conidia, up to 30 µm long; conidiogenous cells: hyaline, subcylindrical, 3.5-6 x 1.5-2 µm; conidia: hyaline, Y-shaped, aseptate, smooth, with a narrowed base; CORNUTISPORA; Hosts: on thallus and more rarely apothecia of a wide range of lichens, including Flavoparmelia, Hypogymnia, Lobaria, Melanelia, Neofuscelia, Parmelia, Platismatia, Punctelia and Rhizoplaca; in Baja California Sur, on the apothecial margin of Lecanora caesiorubella; World distribution: Europe, Africa, Australia and North America, probably cosmopolitan; Sonoran distribution: collected once in Baja California Sur between La Paz and Todos Santos.; Notes: Cornutispora ciliata Kalb is distinguished by the additional presence of two thin, apical appendages on each of the two divergent apical branches. It has a similar host range as C. lichenicola and might be confused with it.