230 The Botanical Gazette. [May, 
heard.” He also writes that “with us 4. 7helypieris ripened this year 
(1894) in the early part of September, and 4. Voveboracense 1n July or 
August,” confirming my own observations on the relative differences 
in the development and ripening of the three ferns. 
From Prof. Trelease of the Missouri Botanical Garden I have re- 
ceived specimens collected on Poplar Bluff, S. E. Missouri, August 
15, 1875, by George W. Letterman, and at Sapulpa, Indian Territory 
Sept. 24, 1894, by B. F. Bush, no. 847, ticket marked “common.” 
There are a few forked veins in the lowermost pair of pinnz on 
Mr. Bush’s specimen, and it will be noticed that the date for Mr. Let- 
terman’s is the earliest yet recorded. 
The species has also been collected by Mr. Merritt L. Fernald, of 
the Cambridge herbarium, in Georgetown, Maine, in a different local- 
ity from that recorded by myself. 
Erratum.—By a careless inadvertence, for which I alone am respon- 
sible, in my account of the habitat of this species (Bot. Gaz. 19: 496 
1894) Seabrook is made to appear in Essex co., Mass., instead of New 
Hampshire, where it belongs; Essex co., Mass., should follow Salis- 
bury.—GerorcE E. Davenport, Medford, Mass. 
Dr. Joseph Schreter.— This eminent mycologist died at his 
home in Breslau, Dec. 12, 1894. His name and works are well known 
to American botanists, who regarded him as a leader in the depart- 
ments of knowledge which. he cultivated. The following account of 
his life is taken in the main from an article in the Botanisches Central- 
blatt, by Dr. H. Kionka of Breslau. 
Schroeter was born in Potschkau in Upper Silesia, March 14, 1837; 
and was therefore only in his fifty-eighth year at time of his death. 
As a boy he was fond of plants, but being the son of a physician he 
naturally devoted himself to medicine, upon the completion of his 
gymnasium studies. He took his doctor’s degree in Berlin at the 
age of twenty-two, and then entered military service. He was soon 
made an army surgeon, and in 1865 was promoted to the position of 
staff surgeon in the royal grenadiers stationed at Breslau. : 
During these years he still found time to pursue his botanical studies. 
When the Plant-Physiological Institute was established at Breslau in 
1866, under the management of Prof. Cohn, Schroeter became the first 
investigator to enter, and maintained his connection with the institution 
up to the time of his death. He at first assisted Professors Cohn an 
Koch with their famous studies upon bacteria, and published a num- 
ber of his own researches in this line, but was soon diverted to the 
study of the fungi, especially parasitic forms, which he made his life 
work. He opened Cohn’s classical series of Beitrdge sur Biologie der 
