Mycological Flora of the Rockies 111 



DOT HIDE ALES 



Phyllachora trifolii (Pers.) Fkl. Tolland. On Trifolium 

 repens. Associated with it is Polythrinciu7n trifolii Kze. and a 

 Phyllosticta. 



PERISPORIALES 



Sphoerotheca humuli var. fuliginea (Schlecht.) Salmon. 

 On Castilleja sp. Tolland. 



SPHAERIALES 



Bertia moriformis (Tode.) De Not. Tolland. On decaying 

 log of poplar or alder. 



Cryptosphaeria vicinula (Nyl.) Karst. Tolland. On 

 dead branches of Alnus tenuifolia. Easily recognized from 

 Saccardo's description. The spores are quite brown at maturity, 

 being 11-15 x 3-3.5 /jl. 



DiAPORTHE NivosA Ell. & Holw. Tollaud. 



On branch of Alnus tenuifolia. This is in much better con- 

 dition than Ellis's specimens distributed in N.A.F., which is 

 somewhat immature. The spores are given too small in Ellis, 

 N. A. Pyren., p. 436, as shown both by an examination of our 

 copy of Ellis's No. 2535, and by the present collection. The 

 ascospores are 16-19 x 5-5.5 /jl, oblong-subfusoid, pointed at 

 ends, 1-septate, hyaline. 



DiATRYPELLA DiscoiDEA var. ALNi Cke. Frcqucnt, Tolland. 

 On dead branches of Abius tenuifolia. 



EuTYPELLA alnifraga (Wahl.) Fr. Tolland. On dead 

 branches of Alnus tenuifolia. 



Hypoxylon Morsei B. & C. Tolland. On dead branches of 

 Alnus tenuifolia. The spores in old perithecia run up to 27 /x 

 in length, but ordinarily they are 19-24 x 8-9 (10) fx. Single 

 perithecia are often 1.5 mm. in diameter, or even larger. 



LoPHiosTOMA macrostomoides (De Not.) Ces. & De Not. 

 Tolland. On decorticated sticks of Alnus or poplar. This 

 species blackens the surface of the wood. 



Lophiotrema hysterioides Ell. & Langlois. Tolland. On 

 decorticated wood of poplar or willow. As I did not have 



