Search on : Taxa descriptions


 Add this item to the list   PYCNOPORUS SANGUINEUS (Fr.) Murr.
Page number:527 
Description type:Non-original description 
Bull. Torrey Bot. Club 31:421, 1904. - Polyporus sanguineus Fr. Syst. Mycol. 1:371, 1821.
FRUITBODY annual or reviving, solitary or in small groups, dimidiate to flabelliform, narrowly attached to the substrate, but also semistipitate or contracted into a stemlike base. Consistency coriaceous when fresh, quite hard when dry. PILEUS 1.5-10 cm in diameter and 1-4 mm thick, with lighter and darker zones, first orange then red to cinnabar, later often intensively red-orange, finally sometimes faded greyish-white with red-orange tints. Young pilei velvety to warted, older ones more smooth and shiny. Margin acute, entire or somewhat incised, often lighter than the rest of the pileus. STIPE rarely present, up to 1.5 cm long and 4 mm thick, concolorous with the lateral pileus. PORE LAYER red-orange to cinnabar. Pores circular, 4-6 per mm, tubes in one layer, 0.5-2 mm long, dissepiments initially rather thick, with age gradually becoming thinner. CONTEXT 1-3 mm thick appearing cottony floccose, blackening in KOH, in cross-section with white and pink-orange belts reflecting developmental stages.
HYPHAL SYSTEM dimitic, generative hyphae hyaline and thin-walled with clamps, 1-3.5 µm in diameter, frequent in the dissepiments. Skeletal hyphae somewhat thick-walled prevailing in all parts of the fruitbody, 2-6.5 µm wide, unbranched and without septa. Binding hyphae thick-walled to solid with short branches, 2-2.5 µm thick in the dissepiments and up to 4 µm thick in the context. SPORES short cylindrical to ovate with smooth, hyaline and non-amyloid walls, 4-4.5 x 2-2.3 µm (from African sporeprints).
HABITAT. On standing and fallen trunks of almost every kind of deciduous wood, especially common in open and sunny localities. DISTRIBUTION. Pan-tropical and common. Widespread in East Africa.
REMARKS. The species differs from P. puniceus in being thinner, more red and having smaller pores. Specimens determined as P. coccineus are in our opinion only young or actively growing specimens of P. sanguineus. When growing, the hyphae of the pileus are erect and this make the pileus soft and more orange. Many of the vegetative hyphae are then quite thin-walled and not covered by coloured crystals. With age and when the growth is discontinued, the hyphae agglutinate on the surface, become more thick-walled and the colour changes to more cinnabar red.
Taxon name: