1897.] Botany. 341 
Perithecia scattered or 2—4 together, mostly about ł mm. diam., 
membranaceous, globose or slightly depressed-globose, entirely buried 
in the matrix which is not discolored within, the very short neck ter- 
minating in a depressed-globose, or subdiscoid ostiolum perforated in 
the center and erumpent through a black, superficial, stromatic shield, 
exactly as in Clypeospheria. Generally the ostiolum is seated in a 
slight depression. Asci cylindrical, 220-230 x 20», very short stipitate, 
with cylindrical, continuous paraphyses longer than the asci and about 
4u thick. Sporidia uniseriate, elliptical or oblong-elliptical, yellowish, 
becoming opaque, 27-30 x 19-21», not appendiculate. Allied to 8. 
merdaria (Fr:) and S. macrospora Awd., but distinguished from both 
by the stromatic shield. 
PODOSPORA MINOR E. & E. On old stalk of Zea mays, Rooks Co., 
Kansas, July, 1896 (Bartholomew, No. 2204). 
Perithecia loosely gregarious, erumpent-superficial, ovate-conical, 
500 x 4004, loosely clothed, except the black, obtuse, stout, short- 
cylindrical ostiolum, with spreading brown hairs. Asci cylindrical, 
150 x 20. Sporidia obliquely uniseriate, ovate-elliptical or almond- 
shaped, 25-35 x 15-22», with a cylindrical, obtuse, brownish appendage 
12-15 x 4» at base, and sometimes with a much shorter, deciduous one 
at theapex. Differs from P. brassice K1. in its smaller size throughout, 
RosELLINIA BIGELOVIH E. & E. On dead stems of Bigelovia 
graveolens, Golden, Colo., December, 1896 (Bethel, No. 15). 
Perithecia erumpent-superficial, scattered or gregarious and cespi- 
tose, ovate-globose, }-} mm. diam., with a distinct, acutely papilliform 
ostiolum. Asci cylindrical, about 50x 5#. Paraphyses filiform, abun- 
dant. Sporidia uniseriate, oblong-elliptical, brown, 6-8 x 34-431. 
PHYSALOSPORA BETULINA E. & E. On birch bark, Newfoundland, 
September, 1896 (Rev. A. C. Waghorne, No. 62). 
Perithecia subgregarious, sunk in the bark, but the apex raising the 
epidermis into pustules, ovate-globose, 400-550» diam., light colored 
inside. Ostiolum inconspicuous. Asci clavate-cylindrical, 110 x 12%, 
with abundant paraphyses. Sporidia uniseriate, elliptical or obovate, 
hyaline with one or two large nuclei, 18-22 x 10-12». 
LEPTOSPHÆRIA PHASEOLORUM E. & E. On old bean vines (Pha- 
seolus vulgaris, cult., with Diaporthe phaseolorum C. & E., Newfield, 
N. J., July 27, 1896. 
Perithecica scattered, ovate-globose, about } mm. diam., covered by 
the epidermis, which is raised into slight pustules and pierced by the 
conical or conic-cylindrical ostiolum. Asci clavate-cylindrical, short- 
Stipitate, paraphysate. Sporidia biseriate, oblong-fusoid, subobtuse, 
