Slideshow image
Rhizocarpon anaperum (Vainio) Vainio
Family: Rhizocarpaceae
[Lecidea anapera Vain.]
Rhizocarpon anaperum image
André Aptroot  
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: compartimentized – areolate, squamulate [th] upper surface: grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) yellow (orange, orange yellow) [th upper surface]: epruinose [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.02 (high) 0.1 [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | bullate | subsquamulose ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (low) 0.2 (high) 0.4 (max) 0.6 ascoma: sessile, superficial [ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex [ascm, if apoth] disc, mazaedium: black(ish) [ascm, if apoth] disc, mazaedium: epruinose [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish) [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: brown(ish) (if pale: fawn, tan; if mid: cinnamon) [ascm] paraphyses/-oids: present [ascm] paraphyses/-oid cells width [µm]: (median) 1.0 [ascm] epihymenium, epithecium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: with amyloid cap (= Icmadophila-, Lecidea-, Pertusaria-types etc) ascospores: (median) 8.0 [asp] shape: broadly ellipsoidal [asp] length [µm]: (min) 23.0 (low) 28.0(median) 30.75 (high) 33.5 (max) 36.5 [asp] width [µm]: (min) 11.0 (low) 14.0(median) 16.1 (high) 17.0 (max) 19.5 [asp] septa: present [asp] septa: muriformly septate – muriform, submuriform [asp] transversal septa: (low) 8.0 (high) 9.0 (max) 10.0 [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: thick, distincly halonate secondary metabolites: absent primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

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