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Solorina spongiosa (Ach.) Anzi  
Family: Peltigeraceae
[Collema spongiosum Ach.,  more]
Solorina spongiosa image
Stephen Sharnoff  
Thallus: appearing crustose, poorly developed, often confined to a continuous or +lacerate, narrow collar of granules, squamules and external cephalodia forming a spongy cushion 1-3 mm thick, occurring in patches 2-10 cm in diam. when well developed surface: gray-blue or rarely brown-black cephalodia: dark gray, +densely cor-alloid-warted or nodulose, gelatinous when wet, partially buried in substrate photobiont: primary photobiont: cuff around apothecia with Coccomyxa; secondary photobiont: external cephalodia with Nostoc, becoming dark and sponge-like when wet Apothecia: scattered, urceolate, 15 mm in diam. disc: pale to dark red-brown, dull margin: pale green or olivaceous, often white pruinose, 0.1-1 mm wide hymenium: hyaline, 160-200 µm tall asci: clavate, (2-)4-spored ascospores: hyaline initially and becoming brown, 1-septate transversally, ellipsoid, 30-50(-55) x (16)18-24(-26) µm; epispore: thickened and ornamented with pits. Substrate and ecology: in moist, calcareous habitats similar to those of S. saccata but less often in crevices and less strongly calciferous World distribution: circumpolar Arctic-alpine in Europe and North America, and also New Zealand Sonoran distribution: upper montane areas of Arizona. Notes: Solorina spongiosa resembles a reduced morphotype of S. saccata (L.) Ach., but is distinguished by its dark, external cephalodia, and the mature ascospores which appear smoother in optical section; ultrastructural differences in the spores help to support the separation at a specific rank. For nomenclatural problems see Laundon (1984).
Solorina spongiosa image
Samuel Brinker  
Solorina spongiosa image
Lucy Taylor  
Solorina spongiosa image
Stephen Sharnoff  
Solorina spongiosa image
Stephen Sharnoff  
Solorina spongiosa image
Solorina spongiosa image
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Solorina spongiosa image
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Solorina spongiosa image
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Solorina spongiosa image
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Solorina spongiosa image
Solorina spongiosa image
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Solorina spongiosa image
Solorina spongiosa image
Solorina spongiosa image
Solorina spongiosa image
Solorina spongiosa image
Solorina spongiosa image
Solorina spongiosa image