594 FOMES 



in vertical positions incircled above with a narrow, undulated, short, 

 obtuse, spreading margin. Tubes ferruginous cinnamon, short; orifice 

 of pores silvery grey, glistening, minute, round. Flesh ferruginous 

 cinnamon, woody, thin. Spores yellowish tawny, "elliptical, 5 x 3 p. 

 Cystidia abundant, slightly thickened at the base, 12-35 x 6/x" 

 Massee. Willow trunks. Sept. Oct. Common. 



1973. F. conchatus (Pers.) Fr. KoyX 1 )' a mussel-shell. 

 P. 5-8 cm., date brown, effuso-reflexed, the reflexed portion somewhat 



shell-shaped, concentrically sulcate, often imbricate, sometimes wholly 

 resupinate, tomentose; margin acute. Tubes cinnamon, short; orifice 

 of pores ashy pruinose, glistening, minute, round. Flesh light brown, 

 hard, corky. Spores ferruginous, subglobose, 5-6 x 4/u,, 1-guttulate. 

 Cystidia abundant, slightly thickened at the base, 15-30 x 7-9 /x. 

 Willows, and beeches. Feb. Nov. Not uncommon, (v.v.) 



1974. F. Ribis (Schum.) Fr. (= Polyporus pectinatus (Klotzsch) 

 Quel.) Ribes, currant. 



P. 525 cm., ferruginous fuscous, bright yellow at the margin, be- 

 coming dark at the base, horizontal, imbricate, flattened, concentrically 

 zoned, velvety, strigose. Tubes cinnamon, 2-4 mm. long, often stra- 

 tose; orifice of pores yellow, then cinnamon, minute, round. Flesh 

 cinnamon, floccose, soft. Spores fuscous, globose, 3-4 x 3 /A, 1-guttu- 

 late. Currants, gooseberries, hawthorns, and spindle. Jan. Dec 

 Not uncommon, (v.v.) 



F. Euonymi (Kalchbr.) Cke. = Fomes Ribis (Schum.) Fr. 

 F. pectinatus (Klotzsch) Fr. = Fomes Ribis (Schum.) Fr. 



1975. F. pomaceus (Pers.) Big. & Guill. Pomum, fruit. 

 P. 3-5 cm., fuscous, becoming cinereous, dimidiate, triquetrous, or 



somewhat hoof-shaped, often subresupinate, delicately silky, or 

 almost smooth. Tubes cinnamon, 4-6 mm. long, stratose ; orifice of 

 pores whitish, then cinnamon, minute, round, pruinose. Flesh light 

 brown, firm, woody. Spores white, globose, 6 x 5-6/n. Cystidia abun- 

 dant, deep mahogany brown, apexhyaline,flask-shaped, 15-20 x 7-8 JLI. 

 Plums, rarely cherries. Jan. Dec. Common, (v.v.) 



var. fulvus (Quel.) Rea. Fulvus, tawny. 



Differs from the type in its brighter tawny colour, and more tomentose 

 p. Plums. Jan. Dec. Common, (v.v.) 



1976. F. ferruginosus (Schrad.) Massee. (= Poriaferruginosa (Schrad.) 

 Fr.) Grev. Scot. Crypt. Fl. t. 155, as Polyporus ferruginosus. 



Ferruginosus, iron rust colour. 



P. 1-3 cm., bright ferruginous brown, becoming dusky ferruginous, 

 effuso-reflexed, imbricate, often entirely resupinate, subtomentose, 



