Polyporus POLYPORACE^E 34 1 



short. Po. minute, colour as St. Flesh cheesy, vinous- 

 white. 



Taste astringent, disagreeable ; odour strong, oppressive, like rotten cheese. 

 Stumps, elm, oak, beech, acacia. Becoming blackish in drying. July- 

 Jan. Mass 1 ft. 3 in. Pi. 8f in. 



1541. P. osseus Kalch. (from its colour, like bone, os) a c. 



White, shaded grey or buff-white. 

 Pi. several, thick, convex to flat, smooth. St. short. T. decurrent, 

 short. Po. minute, shallow. 



Odour acid. Stumps, larch. Oct. Mass 6f in. Pi. 4§ in. 



1542. P. aeanthoides Fr. (from a fancied resemblance to Acanthus \ 



Gr. eidos, appearance) a b c. 

 Pi. numerous, dimidiate, thin, pliant, yellowish-sienna ; z. sienna ; 

 marg. paler. St. pale brownish. Po. lamelloso-sinuate, 

 toothed, colour as St. Flesh faintly rufous. 



Trunks, roots, buried wood. Sept. Mass 8§ in. Pi. 4^ in. 



c. Caseosce. 



1543. P. sulphureus Fr. (from the sulphur-colour) a b c. 



P. few, thick, juicy-cheesy, sulphur-yellowish, somewhat clouded 

 ochreous-reddish or salmon. T. short. Po. minute, colour as P. 

 Flesh thick, pale sulphur, somewhat vinous above. 



Imbricate. Said to be edible. Taste slightly astringent, somewhat acid ; 

 odour fragrant to disagreeable, acid, foxy, pleasant if burnt when dry. 

 Living trees, stumps, oak, yew, chestnut, willow, cherry, alder, poplar, 

 walnut, pear, apple, larch, Robinia, ash, pine. May-Oct. Mass 9J in. 

 P. 7^ in. Pileus covered with crystals of oxalate of lime. One of the 

 fungi used in past times for tinder. Usually rots the middle of a tree- 

 trunk, leaving the outside sound. Sometimes phosphorescent. Ceriomyces 

 {Ptychogaster) aurantiacus is said by Saccardo to be an imperfect state of 

 this species. 



1544. P. imbrieatus Fr. (from the imbricate habit) a b c. 



P. few to many, firmer than 1543, thin, rugose, subviscid, 

 buff. T. long, pale yellowish. Po. lustrous. Flesh thin, 

 white. 



Odour strong, like seed-cake. Trunks, oak ; rare. June-Xov. Mass II in. 

 P. 6 in. 



1545. P. spongia Fr. (from the spongy substance) a b. 



P. few, thick to thin, often rugose, yellowish- chestnut- or umber- 

 sienna, darker at base ; z. indistinct ; marg. sometimes sulphur 

 or pale dull ochre. T. somewhat short. Po. minute, torn, 

 pale primrose, faintly reddish where bruised. Flesh pale 

 opaque sienna. 



Subimbricate. Trunks, pine. Oct. -Nov. Mass 1 1 in. P. 6 in. Boletus 

 Herbergii Rostk. is a form of this. 



