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Ionaspis lacustris (With.) Lutzoni
Family: Hymeneliaceae
[Aspicilia lacustris (With.) Th. Fr.,  more]
Ionaspis lacustris image
Stephen Sharnoff  
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: continuous, diffuse, effuse | cracked, fissured, fractured, rimose [th] upper surface: black(ish) | yellow(ish) (if dull: buff) | red(dish) yellow (orange, orange yellow) | white(ish) brown (beige) | yellow(ish) red (orange red) [th marginal and upper surface] specific structures: absent ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (median) 0.5 ascoma: immersed, innate [ascm, if apoth] disc, mazaedium: concave [ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) yellow (orange, orange yellow) [ascm, if apoth] disc, mazaedium: epruinose [ascm] paraphyses/-oids: present asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): absent [asp] length [µm]: (low) 13.0 (high) 24.0 [asp] width [µm]: (low) 6.0 (high) 11.0 [asp] septa: absent – spore lumen unilocular, monolocular [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent secondary metabolites: absent primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: rock – siliceous, siliciferous, acidic.
Ionaspis lacustris image
Troy McMullin  
Ionaspis lacustris image
Stephen Sharnoff  
Ionaspis lacustris image
Stephen Sharnoff  
Ionaspis lacustris image
Stephen Sharnoff  
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
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Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
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Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
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Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image
Ionaspis lacustris image