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Page number:650 
Remarks (public):Macroscopically easily distinguished by its iridiscent bluish colours.

Description type:Non-original description 
Description:Terana caerulea (Lam.) Kuntze, Revis. gen. pl. (Leipzig) 2: 872, 1891.
Bas.: Byssus caerulea Lam., Fl. franç. (Paris) 1: 103, 1779.
Basidiome resupinate, effused, at first orbicular and then confluent, hymenophore smooth to slightly tuberculate, with a characteristical iridiscent bluish colour. Hyphal system monomitic, hyphae with clamps and with adventitious septa, usually with thickened walls, 2-5 µm wide, with yellowish to bluish contents. Dendrohyphidia formed from young basidia, irregularly branched and often common intermediates between basidia and dendrohyphidia are present. Cystidia absent. Basidia clavate, 30-40 x 5-6 µm, sometimes with lateral branches, with 4-sterigmata and a basal clamp. Basidiospores ellipsoid, 7-9 x 4-6 µm, smooth, thin-walled, hyaline, IKI-.
Distribution in Europe: Germany, France, Czech Republic, Bosnia and Herzegovina, Montenegro, Croatia, Macedonia, Slovenia, Greece, United Kingdom, Belgium, Portugal, Turkey, Sweden, Italy, Denmark, Norway, Switzerland, Spain, Ukraine, and the Caucasus. A widely distributed species in all European countries, but with a prevalent southern distribution, very rare in boreal areas.
Substrata: it occurs on deciduous wood of Alnus glutinosa, Quercus cerris, Q. ilex, Clematis vitalba, Acacia cyanophylla, Fagus sylvatica and Ulmus glabra.
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