16 Journal of Mycology [Vol. 8. 
uniseriate, elliptical, hyaline at first, becoming opaque, slightly 
narrowed at the ends, 40-52 x 18-22/-*. 
Differs from H. fimeti Pers. in its much larger sporidia. 
Rosellinia BiGELoviAi E. & E.—Am. Nat. 341. 1897. N, 
A. F. 3520. When this was published the fact that the sporidia 
are compressed was overlooked. From careful re-examination 
of the original species we give a revised measurement of the 
sporidia 6-9 (mostly 7-8) X4-5J /*, and about 3^ /-* thick. 
What is evidently the same thing has since been found on dead 
stems of Amorpha fruticosa, Rooks Co., Kans. (Bartholomew, 
2928). On this host jthe sporidia are somewhat larger, 8-10^ x 
5 _ 5i /A and rather more distinctly compressed (3-3^ p thick). 
Species from the same locality and collector on Negundo ace- 
roides have sporidia 8-10 x 4-5, 3 p thick. The perithecia on 
these hosts are ovate-globose, here and there densely crowded 
and subconfluent, and range from 250-350 p diam. Ostiolum 
papilliform or conic-papilliform. 
Cucurbitaria ARizoNiCA E. & E.—On dead branches of Aca¬ 
cia grayii-, Tucson, Arizona, June, 1891. (David Griffiths). 
Perithecia erumpent-superficial, in patches f mm. in ex¬ 
tent, or thickly scattered, globose, brownish-black, about J mm. 
diam., with a papilliform ostiolum, collapsing but not deeply. 
Asci cylindrical, p. sp. 75-80 x 12 p , short-stipitate, paraphysate. 
Sporidia mostly obliquely uniseriate, oblong-elliptical, 3-septate 
and submuriform, slightly constricted at the middle septum, 
straw-yellow becoming dark brown, 14 x 6-8 p. 
Pleospora alismatis E. & E.— On dead stems of Alisma 
plantago. South Dakota (David Griffiths). 
Perithecia scattered, erumpent and hemispheric-prominent, 
or strongly convex, about 200 p diam. Asci clavate-cylindrical, 
short stipitate, 90-100x12-15 p, with abundant filiform para- 
physes. Sporidia uniseriate or partially biseriate above, fusoid- 
oblong, inequilateral, 7-9-septate, one or more of the cells divided 
by a partial longitudinal septum, 22-77x10-12 (exceptionally 
IS) 
The distinctly inequilateral sporidia attenuated towards each 
end are characteristic. 
Physalospora lepachybis E. & E.— On living but partly 
faded leaves of Lepachys columnaris. Billings, Montana, Aug. 
1898. (Williams & Griffiths). 
Perithecia epiphyllous, gregarious, semi-erumpent, about J 
mm. diam., with a papilliform ostiolum soon perforated. Asci 
cylindrical, short-stipitate, paraphysate, 60-65 x 8, or when the 
sporidia are partly biseriate, 10-12 p broad. Sporidia mostly uni¬ 
seriate, elliptical with the ends broadly rounded, often with two 
large nuclei, 10-12 x 5-6 p . 
