( 292 ) 
subshining, about 5004, ostiolum minutely papillate; asci 
cylindrical, 100-120 X 8-10 4; paraphyses thread-like ; asco- 
spores subdistichous, eylindrcel, tinted or pale fuliginous, 3- 
septate, constricted, curved, 20-25 x 7 
On shredded bark of Artemusia a King’s Cajion, 
near Carson, Nevada, July 3, 1902, C. F. Baker, no. 12334. 
AMPHISPHAERIACEAE. 
Melomastia Shastensis sp. nov. 
Perithecia scattered or gregarious, the base sunk in the 
spores subdistichous, irregularly oblong or narrowly ovate, 
hyaline, 3-4-septate, not constricted, one medial cell often 
slightly enlarged, about 25 x 5- 
On decorticated whitened wood of Adzes Shastensis, Mt. 
Shasta, Calif., 7,500 ft., July, 1903, Copeland. Communi- 
cated by C. F. Baker as no. 3584 
MycosPHAERELLACEAE. 
Mycosphaerella Balsamorrhizae sp. nov. 
Perithecia thickly scattered over large areas, buried, black, 
lenticular, not collapsing, 200-225 w, of rather loose cellular 
tissue, cells large, 10-12 y, ostiolum minutely perforate; asci 
narrowly elliptical, short-stipitate, 60-70 x 14 43 paraphyses 
none; ascospores distichous, narrowly ovate, unequally uni- 
septate, somewhat constricted, 18-20 x 7-8 pu. 
On dead stems of Balsamorrhiza sp., King’s Cafion, near 
Carson, Nevada, July 3, 1902, C. F. Baker, no. 1230. 
Mycosphaerella Vagnerae sp. nov. 
Perithecia thickly scattered over large whitened areas, 
Bb? 
eter, ostiolum 1 ie Gis ae ed asci peas or often irregu- 
larly spindle-shape, 60— Of; paraphyses none; asco- 
spores inordinate, Mires, ae obtuse, uniseptate, hyaline, 
16-18 x 6-7 p. 
On dead stems of Vagnera sp., King’s Cafion, near Car- 
son, Nevada, July 3, 1902, C. F. Baker, no. 1225. 
