31 
EXPLANATION OP PLATES. 
Plate I. 
Figs. 1 to 13. Development of sporidia of Fenestella amorpha. 
1. Formation of sporidiogenic layer. 
2, 3, and 4. Primitive sporidia. 
5-12. Stages in sporidial development. 
13. Mature ascus and sporidia. 
Plate II. 
Figs. 14-17. Sporidial development of Fatellaria fenestrata. 
14. Formation of sporidiogenic layer. 
15-16. Formation of primitive sporidia. 
17. A nearly developed sporidium. 
18-26 represent stages in development of spores of Camarosporium subfenes- 
tratum. 
The scale applies to both plates. 
NEW SPECIES OF FUNGI. 
By J. B. Ellis and B. T. Galloway. 
iEciDiUM crepidicolum, n. s. On leaves of Crepts acuminata , 
Helena, Mont., June, 1889. Rev. F. D. Kelsey, Ko. 98. Amphigen- 
ous, small, clustered but not crowded, often subcircinate around a va¬ 
cant space in tlie center, hemispheric and closed at first, soon open, peri- 
diurn thin, white, margin narrowly reflexed, at length lacerate cleft 
nearly or quite to the base. Spores subglobose, 20-24/1, varying to ovate 
and elliptical, 20-30 by 15-20 fj. (smooth?) with a rather thick epispore. 
The leaf is slightly thickened in the affected spots. Clusters 2-3 mili- 
meters in diameter, few on a leaf, or smaller (3-6 secidia together) and 
then more numerous. Differs from JEcidium crepidis , Tkiim. in having 
the secidia mass deeply buried in the leaf. Mcidium Rostruppii , Thtiin. 
has the secidia larger, but possibly our plant may not be distinct from 
JEcidium Barkhausice , Roum. 
Ustilago (sorosporium?) Brunkii, n. s. In sheaths of Andropo- 
gon argenteus , destroying the inflorescence. College Station, Brazos 
County, Tex. H. S. Jennings. Inclosed in the sheaths without any 
distinct membranaceous covering. Spores globose or ovate, 10-18/i, in 
diameter, often apiculate, olivaceous brown under the microscope, finally 
subopaque. Epispore smooth, thick (3-4 p). The spores are partially 
agglutinated and hence are not as loosely pulverulent or dusty as in 
most species. 
Sorosporium Ellisii, Winter, var. provincialis, n. var. In inflo¬ 
rescence of Andropogon provincialis. Saline County, Mo. (Demetrio), 
and Custer County, Kebr. (Webber). Differs from the original speci- 
