226 FUNGUS-FLORA. 



than Fames fraxineus or F. variegatiis, hut hard and perennial, 

 resembling F. annosiis in the radiately rugose bard pileus, 

 but quite distinct in the absence of the white sterile margin, 

 &c. 



Fomes resupinatus. Massee. 

 Coriaceous but rather spongy, sessile, often broadly effused, 

 and either plane or furnished here and there "with nodulcse 

 outgrowths ; altogether ferruginous, flesh very thin, fibrous ; 

 tubes stratose, 2-5 mm. long, openings nearly circular. ^-\ 

 mm. across, dissepiments thin, entire, acute; spores colour- 

 less, elliptical, 4 x 1'5 jx. 



Boletus resu2nnatus, Bolton, Fung. Halifax, t. 165, p. 165. 

 Fomes sjyonrjiosus, Sacc, Syll., vi. n. 5525. 

 Boletus s^ongiosus, Persoon, Syn., jj. 543 (according to 

 Saccardo). 



On trunks and branches. Often broadly incrusting, closely 

 aduate, the hynienium often more or less nodulose from the 

 outgrowth of abortive or imperfectly developed rudimentary 

 pilei ; in other examples the hymenium remains plane and 

 even, and then resembling in general appearance and habit 

 Fomes ferruginosus, Fr., but at once distinguished on a micro- 

 scopic examination by the absence of large, coloured cystidia 

 projecting from the hymenial surface. 



Saccardo, in Sacc, Syll. Fung. vi. n. 6525, has given the 

 present species as a synonym under Fomes spongiosus, Pers. ; 

 there is no evidence, however, that the two arc identical, 

 whereas there are specimens in the Kew Herbarium agreeing 

 exactly with Bolton's species, and determined as such by the 

 Rev, M. J. Berkeley. 



This curious Piolctus (= Fomes), most frequently creeps 

 or spreads upon its back, sometimes it is formed into lum])s 

 of a rude turban-shape; in either case it consists of a 

 thin brown crust, which closely embraces the wood on 

 which it grows, and serves as a base or groundwork to the 

 tubes. 



The tubes are long, erect, and constitute almost the whole 

 substance of the plant ; in spreading or creeping specimens, 

 tlie margin is une(j[ually lobed and blunt ; the surface made 

 uneven by swelling bunches ; the colour, like all the other 

 parts, is a rusty brown. The pores round, but are too small 



