Qhov chaw ntawm vanillin, syringic aldehyde, dimethyl sulfoxide, Lignin (Dealkaline) tuaj yeem txuas ntxiv rau phenolic plastics, ntxiv dag zog rau cov roj hmab (esp rau khau khau), ua cov roj av nkos ntxiv, kom ruaj khov asphalt emulsions, kom precipitate proteins.

Tag nrho cov tsos ntawm lichens yog piav raws li crustose (lawv ua ib tug nyias thiab tiaj crust nyob rau hauv lub substratum), foliose los yog fruticose (upright, branched daim ntawv, zoo li shrubs). Lichens loj hlob qeeb los ntawm ob peb millimeters mus rau ob peb meters txhua xyoo. Lawv rov tsim dua feem ntau los ntawm kev loj hlob ntawm apothecia lossis perithecia, tsim cov lichens tshiab ntawm kev loj hlob ntawm ascospores tsuas yog nyob rau hauv lub xub ntiag ntawm tus khub algal uas tsis muaj cov kab mob tuag.
Ze li ntawm 700 cov tshuaj, uas yog tshwj xeeb rau lichens, pab lichens kom ciaj sia thiab tiv thaiv tawm tsam los ntawm cov kab mob, lwm yam fungi thiab grazing herbivores.
Lichens nyob rau hauv cov av-crust cov zej zog thiab pab stabilize av, tshwj xeeb tshaj yog nyob rau hauv cov suab puam. Cyanolichens pab kho nitrogen rau lub ecosystem uas lawv loj hlob. LicheGare siv los txheeb xyuas lub hnub nyoog ntawm qhov chaw (uas lawv loj hlob) los ntawm cov txheej txheem, hu ua lichenometry..
Lichens yog cov cim qhia kev ua qias tuaj vim lawv qhov sib txawv ntawm cov sulfur dioxide (SO2), nitrogen dioxide (NO2) thiab ozone, nrog rau lawv lub peev xwm nqus thiab sib sau hnyav hlau thiab radionuclides.
Cov tshuaj xws li pigments, co toxins, tshuaj tua kab mob, thiab lwm yam yog tau los ntawm lichens, uas yog tshwj xeeb tshaj yog pab tau raws li ib tug dyes (piv txwv li, Roccella, muab litmus), tshuaj thiab tshuaj tsw qab. Qee cov lichens, zoo li Iceland moss thiab reindeer moss, yog siv los ua zaub mov hauv cheeb tsam arctic.