Search on : Taxa descriptions


 Add this item to the list  BJERKANDERA ADUSTA (Fr.) Karst.
Page number:265 
Remarks (public):The distinctly pileate species with a blackish tube-layer is usually easy to recognize. However, frequently the species is resupinate or only with a weakly developed pileus, more or less dirty whitish. In such cases a section is necessary to reveal the darker coloured tubes. In doubtful cases the wide and thick-walled hyphae with large clamps in the subiculum or context should be diagnostic. 
Description type:Non-original description 
Description:BJERKANDERA ADUSTA (Fr.) Karst.
Medd. Soc. Fauna F1. Fenn. 5:38, 1879 - Polyporus adustus Fr. Syst. Mycol. 1:363, 1821.
Synonyms (Synonymy based on European collections are not included, for these synonyms, see Donk 1974:28-30).
Polyporus subcinereus Berk. Ann. Nat. Hist. 3:391, 1138 (K.'). Poria carnosa Rostr. ex Sacc. Syll. Fung. 17:134, 1905 (CP!). Polyporus digitalis Berk. Hook. J. Bot. 6:139, 1854 (K!). Polyporus halesiae Berk. & Curt. Ann. Mag. Hist. Nat. Hist. Ser. 2,12:434, 1853 (K:). Polyporus secernibilis Berk. Hook. Lond. J. Bot. 6:500, 11 1847. Polyporus lindheimeri Berk. & Curt., Grevillea 1:50, 1872(K!). Polyporus burtii Peck, Bull. Torrey Bot. C1. 24:146. Teste Murrill N. Am. Fl. 9:40, 1907. Polyporus dissitus Berk.& Br. J. Linn. Soc. 14:48, 1875 (K!). Polyporus macowani Kalch. ex Cooke Grevillea 10:54, 1881 (teste Cunningham 1965:114). Polystictus ochraceo-stuppeus Lloyd Letter 63:11, 1916 (teste Cunningham op cit.). Polyporus gloeoporioides Speg. 451, 1889 (teste Bresadola 1916 Ann. Mycol. 14:224, 1916). Coriolus ablamensis Murr. North Am. F1. 9:19, 1907 (teste Overholts 1953:364, 1953). Polyporus fumosogriseus Cooke & Ell. Grevillea 9:103, 1881 (teste Cooke Grevillea 15:55, 1886).
FRUITBODIES annual, effuse, resupinate to pileate, often with imbricate, narrow elongated pilei, or reflexed from the upper edge of an otherwise resupinate fruitbody, pilei up to 4 cm wide usually thin and deflexed when dry, up to 8 mm thick at the base, many pilei may be fused together to more compound fruitbodies, soft and pliable when fresh, hard and brittle when dry, taste slightly bitter. PILEUS white to cream, later more greyish to blackish, especially along the margin (as if burned), azonate to weakly concentrically zonate, first finely velutinate, later the hyphae agglutinate and the surface becomes smooth to finely verrucose. CONTEXT white and fibrous, distinctly thicker than tubes, up to 6 mm thick at the base, often with thin black lines reflecting different periods of active growth. PORE SURFACE grey to black, pores round to angular, 4-6 per mm, more rarely irregular and larger, tubes grey to black, up to 2 mm deep, separated towards the light context by a very thin black zone of same colour as the tubes.
HYPHAL SYSTEM monomitic with clamped, hyaline generative hyphae, on the surface of the pileus and in the context thick-walled to almost solid with small to large conspicuous clamps, moderately branched, 3-8 µm in diameter, in the hymenium delicately thin-walled and frequently branched 2-4 µm in diameter. CYSTIDIA none. SPORES oblong ellipsoid to almost cylindrical, thin-walled, smooth, hyaline and nonamyloid, 4-5.5 x 2.5-3 µm.
HABITAT. On dead deciduous wood, rarely on gymnosperms. DISTRIBUTION. A cosmopolitan species and recorded from numerous countries on all continents. In East Africa rather common from Ethiopia to Malawi.

Taxon name: