280 THELEPHOREI. 



Corticium *** Amphigenous, from the very first hardened, 



29. C. polygonium Pers. Flesh-colour, adnate, defined, soon 

 hardened, somewhat grumous, circumference similar. Hymen- 

 ium red under the dense pruina. 



On dead branches, poplar, &c. Frequent. 



Growing in little round detached patches from the ostiola of Sphcerice. 

 M.J.B. Namepolygonius, polygonal. From the shape of the tubercles 

 which are owing to covered Sphcerice. Pers. Disp. 30. Fr. Hym. Eur. p. 

 655. Berk. Out. p. 276. C. Hbk. n. 941. S. Mycol. Scot. ?i. 897. Hoffm. 

 D. FL 2. /. 6. 



30. C. violaceo-lividum Fr. Violaceous-livid^ somewhat ef- 

 fused, adnate, hardened. Hymenium spuriously corrugated, 

 tubercular, sprinkled with thin, whitish pruina. 



Like C. cinereum, but allied to C. polygonium. Often growing on Sphcsrice- 



On dead wood. Glamis, 1877. 



Name from the colours. Fr. Hym. Eur. p. 655. B. & Br. n. 1696. 

 S. Mycol. Scot. n. 



31. C. maculseforme Fr. Somewhat rose-colour, orbicular, then 

 confluent, hardened, thin, circumference similar, smooth. Hy- 

 menium spuriously papillose, bluish-grey pruinose. 



Commonly small, 2-8 mm. (1-4 lin.) broad. 



On dead wood. Penzance. 



Name macula, a spot ; forma, form. Spot-like. Fr. Hym. Eur. p. 656. 

 B. & Br. n. 1975. Theleph. Fr. Syst. Myc. \.p. 454. Fl. Dan. t. 1738.7. 2. 



32. C. limitatum Fr. Lurid becoming pale, roundish, closely 

 adnate, grumous-hardened, smooth, circumference with a defi?ied 

 black edge. Hymenium naked. 



Easily distinguished by its essential character in having a black edge. 

 On Cytisus. Perth. 



Name limit atus, marked off. From the defined black circumference. Fr. 

 Hym. Eur. p. 656. B. dr" Br. n. 1697. S. Mycol. Scot. n. 899. 



33. C. corrugatum Fr. Pallid cinnamon, somewhat effused, 

 5-7.5 cent. (2-3 in.) long, closely adnate, soon grumous. Hymen- 

 ium beset with ferruginous bristles, very much cracked when 

 dry. 



The bristles are wholly like those of Stereum rubiginosum, to which it is other- 

 wise scarcely allied. It has occurred somewhat waxy. 



On dead wood. Very common. Aug.- Nov. 



