440 PROCEEDINGS OP THE ACADEMY OP [1895. 



The tufts of conidia form little black specks, which at a casual 

 glance resemble minute perithecia. 



Brachysporium pedunculatum E. & E. 



On dead stems of Sambucus glauca, Pullman, Wash., March 1894. 

 Prof. C. V. Piper, No. 316. 



Tufts punctiform, J-l mm. diam., erumpent and closely bordered 

 by the ruptured epidermis. Sterile hyphae coarse, 6-8 // thick, 

 branching, sparingly septate, crooked, hyaline, intricately inter- 

 woven. Conidia oblong, or the shorter ones ovate, biseptate, but 

 scarcely constricted, brown, borne on short, ovate, brownish basidia 

 2-15 x 6-8 // arising from the prostrate hyphae, but finally separat- 

 ing and remaining permanently attached to the conidia. 



This agrees with the diagnosis of B. biseptatum Sacc. and Roum. 

 only that has dark hyphae ("intense fuligineis") and there is no 

 mention made of the permanent basidia so constantly seen in our 

 Washington species. 



Macrosporium cuoumerinum E. & E. 



On living leaves of Cucumis melo, Las Cruces, New Mexico, Aug., 

 1895. Prof. E. O. Wooton. 



Epiphyllous, on orbicular, subconfluent, rusty-brown spots, 3-4 

 mm. diam., becoming whitish in the center. Hyphae fasciculate or 

 solitary, few in a fascicle, subgeniculate, 1-3-septate, 35-50 x 5-6 // 

 Conidia clavate, sleuder-stipitate, 3-8-septate, scarcely constricted, 

 submuriform, 30-75x15-25,"., pedicel, 25-35 //. long. Nearly 

 allied to Macrosporium Solani E. & M., but differs in its slender- 

 pedicillate, mostly smaller conidia. 



Stemphylium laxum E. & E. 



On dead stems of Bigelovia graveolens, Grand .Junction, Colo., 

 May, 1894. Prof. C. S. Crandall, No. 110. 



Effused, extending for one or more cm. along the stem- and often 

 surrounding it, appearing like a thin, black pubescence. Hyphae 

 decumbent, hyaline, coarse, 8-10// diam., continuous. Conidia, 

 30-50 // diam., subglobose, sometimes two or three connate, made up 

 of globose brown cells, 8-10// diam., loosely compacted and borne 

 either terminally or laterally on the hyphae. 



Differs from S. subradians E. & E. , in its coarser, hyaline hyphae 

 and larger, loosely compacted conidia. 



