FOMES 593 



1969. F. igniarius (Linn.) Fr. Sow. Eng. Fung. t. 132. 



Igniarius, belonging to fire. 



P. 10-30 cm., floccosely hoary, then ferruginous, and at length black- 

 ish especially at the base, tuberculoso-globose, immarginate, hoof- 

 shaped, or flattened, rarely resupinate, covered with a very hard, 

 rough, uneven, often rimose cuticle; margin at first whitish, rounded, 

 obtuse. Tubes cinnamon, becoming whitish with deposits of lime with 

 age, 2-8 mm. long, stratose ; orifice of pores hoary, then cinnamon, 

 minute, round. Flesh dark brown, very hard, zoned. Spores hyaline, 

 globose, 5-7 /A, 1-multi-guttulate. Cystidia dark coloured, sparse, 

 subulate, base ventricose, 25-30 x 7-8/z. Willows, and occasionally 

 on ashes. Jan. Dec. Common, (v.v.) 



var. nigricans (Fr.) Lloyd. Fr. Icon. t. 184, fig. 2. 



Nigricans, blackish. 



Differs from the type in the smooth, shining, black crust. Birches, 

 rarely on willows. Jan. Dec. Common, (v.v.) 



var. roburneus (Fr.) Lloyd. Robur, oak. 



Differs from the type in the slight, resinous exudation on the crust 

 and the strongly silvery, glancing orifice of the pores. Willows, and oaks. 

 Jan. Dec. Rare. 



1970. F. robustus Karst. (= Polyporus Hartigii Allesch.; Fomes 

 Hartigii (Allesch.) Sacc. & Trav.; Polyporus igniarius Linn. var. 

 Pinuum Bres.) Robustus, firm. 



P. 10-40 cm., fuscous, becoming black with age, hoof -shaped, or sub- 

 hemispherical, sessile, remotely and concentrically sulcate; cuticle 

 concrete, rough, uneven, rigid, very hard, pilose at first, then glabrous, 

 cracked ; orifices of pores silvery white, then concolorous, minute, round. 

 Tubes rhubarb root colour, or pale fulvous, stratose, cylindrical. Flesh 

 concolorous with the tubes, very firm, zoned. Spores white, globose, 

 7-8 //,, with a large central gutta. Setae none. Abies pectinata and 

 oak. Jan. Dec. Uncommon, (v.v.) 



1971. F. fulvus Fr. Fulvus, tawny. 

 P. 89 cm., tawny, at length becoming hoary, convex above and be- 

 low, adnate by a broad base, triangular in section, even, not con- 

 centrically sulcate, at first hairy, or villose. Tubes cinnamon, short, 

 not distinctly stratose ; orifice of pores at first covered with cinereous 

 yellow pruina, minute, round. Flesh very hard, woody-corky. On 

 decaying trunks, especially poplar. Oct. March. Rare. 



1972. F. salicinus (Pers.) Fr. Fr. Icon. t. 185, fig. 1. 



Salicinus, belonging to willows. 



P. 5-30 cm. and more, cinnamon, then hoary, blackish bay at the 

 base, undulated, smooth, pubescent, for the most part resupinate, or 



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