For Trentepohlia, you can use Bold's Basal Media, Enriched Seawater Media or Waris media combined with Erdscreiber Media or Soil extract with reasonable or blooming success.
For Printzina, one can use the Woods Hole MBL media or WHM media or Optical Haematococcus Media either as isolates or with its mycobiont Graphis sp. I do not have a working knowledge on the culture of Printzina hence shall not be able to predict the behavioural peculiarities of the species but with Trentepohlia you can expect the best possible results using any of the specific media.