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Page number:17 
Remarks (internal):Pulcherricium caeruleum can be recognized easily in the field by its dark bluish basidiomata. Microscopically, this species is primarily characterized by having dendrohyphidia in the hymenium and clavate basidia sometimes with lateral appendages. From Japan, Shirai (1917) first reported this species as Corticium caelureum Fr. 
Description type:Non-original description 
Description:Pulcherricium caeruleum (Lamarck: Fries) Parmasto, Consp. Syst. Cort., 133, 1968.
(Fig. 12)
? Byssus caeruleum Lamarck, Flora France, Ed. 2, 1 (Meth. Anal., 103), 1795.
? Corticium caeruleum Fr., List Japan. Fungi (2nd. ed.), 173, 1917.
Distribution: Africa, Asia [China (Tai, 1979), India and Nepal (Rattan, 1977), Indonesia (Jülich, 1974), Iran (Hallenberg, 1981b), Japan (Shirai, 1917), Thailand (Hjortstam and Ryvarden, 1982)], Australasia, Europe and North America.
Basidiomata resupinate, adnate, effused, ceraceous, 200-800 pm thick; hymenial surface "Livid Violet", "Violet" to "Dark Violet", smooth, sometimes velvety under the lens (x 20); margin white or concolorous with the hymenial surface, thinning out, fimbriate under the lens (x 20). In vertical section, subhyaline to pale bluish colored, membranous. Hyphal system monomitic; hyphae 2-6 µm in diam, smooth, thin- to thick-walled (up to 2 µm), nodose-septate, sometimes encrusted; cystidia lacking; dendrohyphidia numerous in the hymenium, usually with a few branches at the apical part, encrusted with granular or resinous materials; basidia narrowly clavate, 35-70 x 6.5-8 µm, occasionally with lateral appendages, with a basal clamp, producing 4 sterigmata; basidiospores subhyaline to slightly bluish colored, ellipsoid, 6.5-9 x 4-5.5 µm, smooth, thin-walled, non-amyloid.
 
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