(336) 



This has been determined as Periconia fusca Corda? but 

 that species has oblong spores. It is perhaps near the next 

 following species but seems to be sufficiently distinguished 

 by the fascicled conidiophores and densely agglutinated 

 capitulum. 



9. Periconia tenuissima Peck, Reg. Rep. 46 : 33. 1893. 



Effused, forming a thin indefinite purplish-brown stratum ; 

 conidiophores erect, slender, simple, scarcely septate, 300- 

 350 x 4 p. ; capitulum minute, globose ; conidia globose, 

 colored like but paler than the hyphae, 2^-3 fi. 



On a thick stratum of mycelium of some wood inhabiting 

 fungus. New York (Peck), Not seen by me. 



10. Periconia (?) albiceps Peck, Reg. Rep. 32 : 40. 



1880. 



(Figured Bull. N. Y. State Mus. I 2 : fl. i.f. 8-11.) 

 Conidiophores short, equal or slightly tapering upward, 

 black, yi-^i mm.; capitulum white, subglobose ; conidia 

 oblong or subfusiform, colorless, 7^-15 I 1 long- 

 On dead stems of Chelonc glabra, New York (Peck). The 

 published figures of this species shows the conidia borne on 

 elongated basidia which would exclude it from Periconia as 

 here defined. Unfortunately the only specimen seen is not 

 in good condition, and gives no light on the subject. In his 

 earlier reports Peck followed Berkeley and Cooke in using 

 the name Periconia for species with compound conidiophores, 

 so it quite possibly belongs to the Stilbaceae, though there is 

 nothing in the description or figure to indicate it. Saccardo 

 did not transfer this species to Sfiorocybe as he did most of 

 Peck's earlier species of Periconia. 



11. Periconia abietina (Peck) Sacc. Syll. 4: 273. 1886. 



Sporocybe abietina Peck, Reg. Rept. 31 : 45. 1879. 



Very minute ; condiophores slender, distinctly septate, 

 nearly black; capitulum terminal, yellowish, obovate or sub- 

 globose ; conidia minute, oblong, spermatoid. 



On bark and wood of Abies nigra, New York (Peck), not 

 seen by me, said to be about the size of P. byssoides. 



