Slideshow image
Fuscidea recensa (Stirton) Hertel, V. Wirth & Vezda
Family: Fuscideaceae
[Biatora arcuatula Arnold,  more]
Fuscidea recensa image
Stephen Sharnoff  
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: cracked, fissured, fractured, rimose | compartimentized – areolate, squamulate [th] upper surface: grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | white(ish) | brown(ish) grey | red(dish) brown (if pale: orange brown) [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: absent | present [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | verrucose, warted | bullate [th] medulla amyloidity: absent ascomata: present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (low) 0.5 (high) 0.5 (max) 1.2 ascoma: sessile, superficial [ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex | convex [ascm, if apoth] disc, mazaedium: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) [ascm, if apoth] disc, mazaedium: epruinose | pruinose [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) [ascm] paraphyses/-oids: present [ascm] paraphyses/-oid cells width [µm]: (low) 1.5 (high) 2.0 [ascm] paraphyses/-oid apical cells width [µm]: (min) 3.0 [ascm] epihymenium, epithecium: hyaline, colourless asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: entirely amyloid (= Catillaria-, Teloschistes-types etc) ascospores: (median) 8.0 [asp] shape: ellipsoidal | fabiform, reniform [asp] length [µm]: (low) 9.0 (high) 12.0 (max) 14.0 [asp] width [µm]: (min) 3.0 (low) 4.0 (high) 5.0 [asp] septa: absent – spore lumen unilocular, monolocular | present [asp] septa: transversely septate [asp] transversal septa: (median) 1.0 [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent secondary metabolites: present secondary metabolites: divaricatic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: bark, cork, plant surface – trunks, branches, twigs | rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified.
Fuscidea recensa image
Gary Perlmutter  
Fuscidea recensa image
Stephen Sharnoff  
Fuscidea recensa image
Fuscidea recensa image
Fuscidea recensa image
Fuscidea recensa image
Fuscidea recensa image
Fuscidea recensa image
Fuscidea recensa image