FUNGI. 19 



stichous, fusiform, uniseptate, constricted, light olivaceous 

 brown, about 16-18x4/4. 



On dead, but not weather-worn branchlets of Cercocarpus 

 at Hermosa, 28 March. 



MYCOSPHJERELLACEJE. 



MYCOSPELERELLA DELPHINIICOLA, n. sp. Perithecia aggre- 

 gated on irregular blackened spots, nearly spherical, black, 

 100-150, ostioles inconspicuous, seated on irregularly anas- 

 tainosing mycelial threads beneath the epidermis and 

 coming away with it; asci aparaphysate, clavate, clustered, 

 40-60x6-8/4; ascospores distichous, narrowly oval, ends 

 acutish, hyaline, uniseptate, not constricted, about 12x3/4. 



On dead stems of Delphinium, near Pagosa Peak, 10,000 

 feet, 29 Aug.; n. 37. 



MYCOSPHYERELLA PENTSTEMONis, n. sp. Perithecia rather 

 densely aggregated on irregular blackened areas, black, 

 nearly spherical, of coarse cellular structure, about 150-200/4 

 in diameter, seated on a brown, much branched, frequently 

 septate mycelium of very large brown threads 10-12/4 thick, 

 the branches slenderer; asci aparaphysate, clustered, clav- 

 ate, about 60x12/4; ascospores distichous or inordinate, 

 ovate, hyaline, often guttate, unequally uniseptate, con- 

 stricted, about 25x6/4. 



On dead leaves and stems of Pentstemon, near Pagosa 

 Peak, 10,000 feet, 29 Aug.; n. 38. 



MYCOSPH^RELLA PHLOGINA, Earle. Sphserella phlogina 

 E. & E. Journ. Myc. iv. 65. On dead leaves of Gilia Nuttallii, 

 near Pagosa Peak, 11,000 feet, 12 Aug. ; n. 39. 



MYCOSPH^ERELLA, sp. On dead stems of Sedum rhodan- 

 thum, near Pagosa Peak, Aug. 29. Mostly sterile. 



