▁Category : 2 1 st - century ▁Indian ▁film ▁direct ors <0x0A> </s> ▁C occ ot re ma ▁mar it imum ▁is ▁a ▁cr ust ose ▁l ichen ▁commonly ▁known ▁as ▁vol cano ▁l ichen , ▁due ▁to ▁the ▁vol cano - like ▁appearance ▁of ▁the ▁fruit ▁bodies . ▁It ▁was ▁first ▁described ▁and ▁named ▁by ▁Canadian ▁l ichen ologist ▁Ir win ▁Bro do ▁from ▁a ▁population ▁on ▁the ▁Queen ▁Charlotte ▁Islands ▁in ▁ 1 9 7 3 . ▁ ▁Description ▁ ▁The ▁th all us ▁( the ▁main ▁body ▁of ▁the ▁l ichen ) ▁is ▁thick , ▁rough ▁and ▁cr ust y , ▁taking ▁on ▁the ▁appearance ▁of ▁dry , ▁crack ed ▁mud . ▁ ▁It ▁is ▁white ▁to ▁p ink ish ▁or ▁yellow ish - gray ▁in ▁colour , ▁and ▁por ous ▁to ▁allow ▁for ▁gas ▁exchange . ▁From ▁a ▁distance , ▁C . ▁mar it imum ▁can ▁be ▁seen ▁on ▁the ▁rocks ▁as ▁a ▁white ▁line ▁just ▁above ▁the ▁surface ▁of ▁the ▁water . ▁The ▁outer ▁surface ▁of ▁C . mar it imum ▁is ▁scattered ▁with ▁hem is pher ical ▁nit ro gen - fix ing ▁structures ▁( ce phal odia ) ▁that ▁are ▁p ink ish ▁to ▁brown ish – gre y ▁in ▁colour . ▁ ▁Re production ▁ ▁As ▁in ▁other ▁l ich ens , ▁C occ ot re ma ▁species ▁can ▁reproduce ▁sex ually ▁by ▁generating ▁tiny ▁sp ores . ▁Six ▁to ▁eight ▁sp ores ▁can ▁be ▁found ▁per ▁as cus ▁( a ▁sac ▁where ▁sp ores