Addenda to the lichen flora of the Ticino river valley (western Po Plain, Italy) Author Gheza, Gabriele text Natural History Sciences 2018 2018-10-03 5 2 33 40 http://dx.doi.org/10.4081/nhs.2018.381 journal article 10.4081/nhs.2018.381 2385-0922 12809365 Cladonia parasitica (Hoffm.) Hoffm. 3: on organic soil on a stump (GG15). 16: on dead wo- od of Q. robur (GG) . 22: on dead wood of Q. robur (GG) . 23: on bark of Q. robur (GG15). A mainly lignicolous species, found in deciduous oak woods on logs and snags. Extremely rare, but maybe also overlooked.