FAKLOWIA. — MTTILIDIOX. 25 



8-spored, paraphyses filiform, septate, hyaline, branched 

 above ; spores more or less elongatci-fusiform, 3— 7-septate, 

 hiseriate, coloured when mature. 



Myiilidion (erroneously written Jlytilinidion), Duby, Mem. 

 Hyster., p. 62; Sacc, Syll., ii. p. 760. 



Lophium resembles the present genus in the mussel-shaped 

 ascophore, but is at once distinguished by the long, filiform, 

 hyaline spores. Htjsterium difiers in the ascophore not being 

 mussel-shaped. 



* Spores 3-septaie. 



Mytilidion laeviuscultUQ. Sacc. SvU., n. .J704. (fitrs. 

 39-41, p. 22.) 



Gregarious, sessile on a broad base, mussel-shaped, ver- 

 tical and laterally compressed, black, almost smooth, lips 

 thin and closed at first, then slightly gaping ; cells of 

 excipulum small, blackish externally, I'ormini; a compact, 

 parenchymatous tissue; asci clavate, apex rather acute, nar- 

 rowed below into a somewhat s-lender pedicel ; spores 8, 

 irregularly biseriate, narrowly fusiform, straight or some- 

 times -with a very slight s-uggestion of becoming sigmoid, 

 3-septate, smooth, very pale yellowish brown at maturity; 

 15-20 X 2-.5 X 3'5/i; paraphyses numerous, very slender, 

 1 ■ 5 /i thick, septate, branched above. 



Lophium laeviusculum, Karsten, .Symli. Myc. Fam., p. 261. 



On worked pinewood. 



Gregarious, mostly with the long axis of the fungus 

 parallel to the grain of the wood. Specimen examined from 

 Karsten's Fung. Fenn., n. 771. 



Fiyrma minor : asci and spores a trifle smaller than in the 

 typical form. 



On pine leaves. 



** Spores 0-1 -septate. 



Mytilidion gemmigenum. Fuckel, Svmli. App. i., 

 p. 299; Sacc, Syll., n. 5711. 



Somewhat gregarious or more frequently scattered, not 

 seated on a black stain, superficial, vertical, not much com- 

 pressed, ends obtuse, slightly striate tiansverselv, upper edge 

 obtuse, slit very narrow, black, 1-1^ mm. long, h mm. broad, 

 up to 1 mm. high; asci cylindrical, apex rounded, base nar- 



