Sumstine: North American Hyphomycetes 49 



5. Rhinotrichum laevisporum (Cooke) 



Zygodesmus laevisporus Cooke, Grevillea 6: 139. 1878. 



Stratum thin, effused, ochraceous yellow-brown; hyphae spar- 

 ingly branched, septate, 6-8^ thick; fertile branches erect, septate, 

 apex swollen with few spicules, frequently the ultimate and 

 penultimate divisions with spicules ; spores globose, smooth, 

 10-14/x. 



On decayed wood. 



Specimens examined : Louisiana, Raven-el 58. 

 This species is near R. Curtisii. The few spicules chiefly dis- 

 tinguish it from that species. 



6. Rhinotrichum armeniacum Berk. & Curt. Grevillea 3 : 108. 



1875 



Stratum thin, yellow to yellow-brown ; hyphae branched, spinu- 

 lose, occasionally portions smooth, septate, 6-8 fx thick ; fertile 

 branches spinulose, attenuate upwards, septate ( ?) ; spores 

 globose, colored, granular, 14-15/*. 



On decayed wood. 



Specimens examined: South Carolina, 3011 (type). 



The authors characterize it as, " Forming a thin apricot-colored 

 stratum; flocci ascending, articulated, the ultimate joints much 

 elongated, granulated ; spores globose." 



The color apparently is yellow or yellowish-brown. The spinu- 

 lose hyphae and larger spores separate it from R. subalutaceum. 



7. Rhinotrichum carneum Ellis & Ev. Jour. Myc. 1 : 93. 1885 



Stratum loose, floccose, dull-white at first, then flesh-colored; 

 hyphae 6-8 /x thick ; fertile branches obtusely rounded at the apex, 

 with minute spicules, septate; spores globose, delicately spinu- 

 lose, 5 fx. 



On decayed wood. 



Specimens examined: Canada, Macoun; Oregon, Carpenter 

 125 (type). 



A study of better material may place this species in some other 

 genus. 



