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Lepra excludens (Nyl.) Hafellner (redirected from: Pertusaria excludens)
Family: Pertusariaceae
[Collema excludens (Nyl.) Räsänen,  more]
Lepra excludens image
André Aptroot  
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: continuous, diffuse, effuse | cracked, fissured, fractured, rimose [th] upper surface: grey(ish) | brown(ish) grey [th marginal and upper surface] specific structures: present [th margin] cilia, cilioid structures: absent [th upper surface] isidia, isidioid structures: absent [th upper surface] soredia, soralia, soralioid structures: present ascomata: absent secondary metabolites: present secondary metabolites: lichexanthone | norstictic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified.