1887. | BOTANICAL GAZETTE. 191 
orous growth. On the same host-specimens forms were 
found with fewer appendages (12), in which case they are 
longer, with more frequent septa, thus approaching No. II. 
No. IV. ‘‘Microsphera Sulvofulcra Cooke,” ex herb. W. 
A. Kellerman, on Spiraea tomentosa; Fairfield Co., Ohio, 
Oct., 1882; the same as 1,323 of the Ellis collection of North 
American fungi. This form is almost identical with No. I. 
Whatever slight distinctions there may be bring it nearer 
No. Ill. The branching approaches III. The septa are 
less distinct. 
fter a careful review of this somewhat important mate- 
rial, it seems conclusively demonstrated that these forms are 
the same. In a note inthe Fournal of Mycology, June, 1885, 
Mr. Ellis referred to the error in his ‘* North American Fungi,” 
and rejects the species Microsphera sengeet Cooke. He 
also says that the error fallen into by Cooke has been re- 
peated by Dr. Winter in his Exsiccati no. 3,045. The spec- 
To substantiate the above statements the accompanying 
Camera-lucida drawings are offered. The numbers on the 
plate correspond to those in the preceding notes. 
Prare XI.—I Podosphera minor Howe, on Spirwa tomentosa, from E. C. 
- UL. The “Microsphera fulvofulera Cke.,” on Spirea salicifoli \, Provi- 
dence, R. I.; the “204” of the Harkness herb. III. “MM. fulvofulera Cke.,” on 
b= appendage < 85 diam. 
¢ = broken perithecium \ 85'diam. d’= asc 
e== spore < 375 diameters.’ 
| [? Dr Peck, of the N. Y.8 Museum, forwarded two sets of specimens of the Podosphera 
discussed in ‘this paper, which evere collected in Eastern N. Y., but a. ange 
erry had completed her work and left Ithaca. Several preparations of each we aie 
eas Ww he results are wor 
D per, 
“Hat differences of host or position occasion variations in the bape and the ap- 
Pendages of the parasite. In specimens from Spireea salicifolia e 
Perithec inn 
re: 
8 in then ’ imens 0: 
8 on S. salicifolia already figured under II. Those on Dr. Peck’s speci ; 
tomentosa had from 16 to 19 or more appendages—in one ree lame gen 
m 34 to 144 the diameter of the perithecium, thus agreeing yi der surface of 
red in this paper. Furthermore, the specimens from ce ee es than those 
- tomentosa leaves had fewer (often only 12-15) and longer appendag 
€ upper side.—W, R. DUDLEY.] 
