53 
diameter, collapsing above; ostiolum only slightly prominent and 
not strongly compressed; asci sessile, subcylindrical, 90-100 x 12- 
15//; parapbyses filiform ; sporidia more or less biseriate, oblong-cylin- 
drical, nearly hyaline, about 7-septate, ends obtuse, slightly curved 
and one end broader, 18-24 x 5-6^/U, 
On weather-beaten wood of service-tree. 
Sph/Eria (melanomma) sulcata. -Superficial, densely gregarious, 
pcrithecia ovate (.33'"™')? black, not polished; ostiolum tuberculiform, 
large, with a rather large and nearly circular opening; asci clavate- 
cylindrical, 130 x 22/i; parapbyses abundant; sporidia biseriate, broad 
navicular-fusiform, septate, straw-yellow, becoming brown, 35-45 x 
11-15;^. 
On dead sage-brush. 
Cucurbit ART A umbiltcata. — Scattered, depressed-hemispheric, 
black, rough {.33-.5™'"'), Collapsing above when dry; asci cylindrical, 
114X11JX; sporidia mostly uniseriate, elliptical, constricted in the 
middle, 3-septate and straw-colored at first, becoming muriform and 
brown, 22-28 x9|^-i3/<. 
On decorticated sage-brush. 
Leptosph/ERIA olivacea.— Perithecia submembranaceous, about 
^^mm. jj^ diameter, buried in the substance of the stem and covered 
by the cuticle, which is slightly elevated, stained^ oHve-brown and 
pierced by the broad, rough, obtuse ostiolum; asci clavate, 75-85 x 
i5-i8/<; sporidia fasciculate yellow-brown, vermiform, 6-7-septate, 
and, when mature, slightly constricted at the septa, third jomt from 
the tip slightly swollen, 75 x3^-4/W. ,.-, 
The spore is generally slightly bent just below the last-named jomt. ^ 
On dead herbaceous stems. , 
Pleospora aurea.— Perithecia gregarious, subcuticular (.25-- 
.33"""- in diameter), soon collapsing, of coarse cellularstructure and 
surrounded at the base with a coarse, fringe-like mycelium of brown, 
septate, si)aringly branched, creeping hyphre, which are plainly visi- 
ble through the transparent cuticle; asci broad, obtuse, sessile, about 
114x3/1 (spore-bearing part); sporidia biseriate, elliptical, flattened, 
4-septate, with all but the terminal cells divided by a longitudinal 
septum, golden-yellow, 27-30x11-15/^. 
On dead herbaceous stems. . 
Pleospora planispora.— Perithecia gregarious, collapsing when 
dry (.25-.33"'^-), covered by the scarcely discolored epidermis; asci 
114-120 X 25-2 8/<; sporidia biseriate, oblong-elliptical, flattened, 5- 
septate, with a longitudinal septum on each side running through all 
but the terminal cells, yellow, becoming brown, 30-40 x 15-20 x 11/^; 
parapbyses abundant. . 
On dead culms of some grass, apparently a species of Mymus\ 
mostly on the sheaths. , ,. 
This is closely allied to the preceding species, but the mycehum 
IS less abundant, the sporidia larger snd quite constantly 5-septate. 
Pleospora baccata.— Perithecia subcuticular, hemispheric, col- 
lapsing, rough (.33 . 
brown, creeping hypl..^, ^„„„ x-. ■ - . . 
cal, 114 X 23//; sporidia biseriate, oblong-elliptical, 3-septate, with a 
-mm.\ fringed around the base with abundant, 
)ha^; ostiolum papiUiform; asci oblong-cylindri- 
