Slideshow image
Stereocaulon pileatum Ach.
Family: Stereocaulaceae
[Patellaria pileata (Ach.) Wallr.,  more]
Stereocaulon pileatum image
Stephen Sharnoff  
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified | fruticose (fruticous), shrub-like, beard-like thallus: cracked, fissured, fractured, rimose [th] upper surface: grey(ish) | white(ish) [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 [th] morphol substructures (eg areoles, lobes, branches) upper surface: verrucose, warted ascomata: absent secondary metabolites: present secondary metabolites: lobaric acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

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