DECADES OF, FUNGI. 309 
On bark. Ohio. No. 242. 7. G. Lea, Esq. 
A minute species 3 ofa line in diameter with the stem 2 of 
alinehigh. The appearance of the surface of the peridium 
islike that ofa little globule of mother of vinegar, white and 
eurdled. 
90. Macrosporium punctiforme, n. sp. soris minutis sparsis 
punctiformibus ; sporis obovatis; filis simplicibus obtusis 
subflexuosis. (Tab. XII, f. 1). 
On dead stems of Rubus occidentalis. Ohio. No. 166. 
T. G. Lea, Esq. 
Forming minute black scattered dots; stroma reticulate ; 
flocci erect simple slightly flexuous sparingly septate some- 
times decumbent and then proliferous. Spores obovate at 
first simple and pellucid, then furnished with one or two 
transverse septa, at length acquiring a darker tinge and a few 
oblique or vertical septa. 
Tab. XII, fig. 1. a. Flocci. 5. Portion of stroma with flocci 
springing from it. c. Spores in various stages of growth. 
d. Single spore. All more or less magnified. 
31. Macrosporium pinguedinis, n. sp. latissime effusum, 
floccis tenuibus erectis simplicibus septatis; sporis lanceolatis 
quandoque obovato-oblongis. (Tab. XII, f. 2). 
On grass on which animal fat had been poured. Ohio. No. 
146. T. G. Lea, Esq. ! 
Completely investing the culms and leaves of the matrix. 
occi erect flexuous septate ; spores brown lanceolate obtuse 
transversely septate with here and there a vertical septum ; 
sometimes obovate-oblong. Hv 
 Macrosporium, Fr. is the same with Septosporium, Corda 
taking Helminthosporium Cheiranthi as the type of the genus 
Which indeed differs very slightly from Helminthosporium. 
Tab. XII. fig. 2. a. Flocci and spores magnified. b. Spore 
highly magnified. 
_ 92. Sporidesmium concinnum, n. sp. sporis primum brevis- 
sime pedicellatis oblongis obtusis nitidis fenestratis. (Tab. 
XII. f. 3.) : 
On dead wood. Ohio. No. 168. T. G. Lea, Esq. - 
