▁S ween ey ▁Tony ▁Tom ass i ▁Marie ▁U gu ay ▁Jean - M arc ▁Vall ée ▁Michel ▁V enne ▁Antoine ▁Vé z ina ▁Y ol ande ▁Ville ma ire ▁Martin ▁Vill ene uve ▁La ure ▁War idel ▁ ▁References ▁ ▁people ▁Quebec ▁a ▁Montreal , ▁Univers ite ▁du ▁Univers ite ▁du ▁Quebec ▁a ▁Montreal <0x0A> </s> ▁A car os por a ▁social is ▁( br ight ▁c ob bl estone ▁l ichen ) ▁is ▁a ▁usually ▁bright ▁yellow ▁a ere olate ▁to ▁squ am ul ose ▁cr ust ose ▁l ichen ▁in ▁the ▁A car os por aceae ▁family ▁that ▁grows ▁up ▁to ▁ 1 0   cm ▁wide , ▁mostly ▁on ▁rock ▁in ▁western ▁North ▁America . ▁It ▁is ▁among ▁the ▁most ▁common ▁l ich ens ▁in ▁the ▁desert s ▁of ▁Arizona ▁and ▁southern ▁California . ▁It ▁grows ▁on ▁sand stone , ▁intr us ive ▁and ▁extr us ive ▁ igne ous ▁rock ▁such ▁as ▁gran it ics , ▁in ▁all ▁kinds ▁of ▁expos ures ▁to ▁sun light , ▁including ▁vertical ▁rock ▁walls . ▁It ▁is ▁found ▁in ▁North ▁America , ▁including ▁areas ▁of ▁the ▁M oj ave ▁Des ert ▁and ▁Son or an ▁Des ert ▁region , ▁to ▁B aja ▁California ▁Sur . ▁It ▁is ▁the ▁most ▁common ▁yellow ▁member ▁of ▁its ▁genus ▁in ▁south western ▁North ▁America . ▁It ▁sometimes , ▁but ▁ ▁rarely , ▁grows ▁on ▁other ▁soil ▁cr ust s . ▁It ▁is ▁a ▁pione er ▁species . ▁ ▁It ▁is ▁variable ▁in ▁its ▁growth ▁pattern .