463 
Perithecia gregarious, mostly lying parallel, elliptical, 1X 14 mm. 
or sometimes elongated (by confluence ?), 2—3 mm. long, lips parti- 
ally open, sides faintly striate; asci oblong, short-stipitate, 75— 
90X 15-20 w; sporidia crowded-biseriate, oblong-fusoid, 7~-10- 
septate, mostly constricted near the middle, one or more of the 
cells divided by a longitudinal septum, 26-40X 8-12 p. 
This is certainly Hysterographium and probably not distinct 
from /7. elongatum ( Wahlenb.), and was so considered by Fries. 
APOSPHAERIA CONDENSATA E. & E. 
On dead stems of Bzgelovia, Colorado, July, 1897. (Prof. E. 
Bethel.) 
Perithecia superficial, densely gregarious so as to form here 
and there an almost continuous crust, depressed-globose, 150— 
250 #,diam., with a broad-papilliform black shining ostiolum, the 
smaller ones collapsing; sporules minute, allantoid, hyaline, 
2a-3X Y-Y p. 
A. allantella Sacc. has sporules 5-6X1-1% p. A. alpigena E. 
& E. has sporules 3-314 X11 » and the perithecia do not collapse. 
HypopDERMA ABIETINUM E. & E. 
On decorticated limbs of Adzes,San Juan Mts., Colo., July, 
1897. (Bethel, no. 351.) 
__Gregarious, elliptical, rough, 34-14 X%-34 mm., lips par- 
tially closed; asci clavate, 100-110X8-10 #1; paraphyses linear, 
mostly curved at the tips; sporidia narrow-fusoid, nucleate, slightly 
curved, hyaline, 20-221 %4-2 p. 
SPHAEROPSIS COMPTONIAE E. & E. 
On dead stems of Comptonia, Newfield, N. J., summer and 
autumn, 1897. as 
Perithecia buried in the inner bark, ovate-globose, acutely 
papilliform, %/-14 mm. diam., either gregariously scattered with 
their apices barely erumpent, or crowded in transverse cracks of 
the bark, forming rings partly or entirely surrounding the stem with 
the perithecia semi-erumpent; sporules oblong-elliptical, brown, 16 
—22X8-12 p, occasionally imperfectly septate, but very indis- 
tinctly so. 
; PyrENOCHAETA GRAMINIS E. & E. 
On dead leaves of Chloris verticillata, Rooks County, Kansas, 
September, 1897. (E. Bartholomew, no. 2294.) 
_ Perithecia mostly hypophyllous, superficial, membranous, ae 
