Whole lichens can be cultivated

https://www.researchgate.net/publication/303817350_Rapid_ex_situ_culture_of_N-fixing_soil_lichens_and_biocrusts_is_enhanced_by_complementarity

https://www.researchgate.net/publication/250612216_A_simple_outdoor_culturing_system_for_the_foliose_macrolichens_Xanthoria_parietina_L_Th_Fr_and_Parmelia_sulcata_Taylor

Moss Grower’s Handbook (M. Fletcher) also reports that Cladonia/Peltigera/Collema thalli sometimes pop up uninvited in certain indoor moss cultures and can be grown similarly to the mosses that share their microhabitat.

Disclaimer: please experiment responsibly. Thalli of most nonweedy lichen taxa cannot be cultured, and will die if sprayed with buttermilk/yogurt juice. Even weedy lichens’ thalli are extremely fastidious and will die indoors if one does not perform large amounts of original research on their ecology.

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