460 
Golelirto Gesellschaften. 
taegus, is soraewhat more common than the comparative rarity of 
conicum in the same region would lead one to expect. R. pyrata 
was not observed at all, and macropus only in a single instance. 
R. botryapites, liowever, is exceedingly common, although no C u - 
pressus is known to me within eight miles. R. transformans 
was not observed, but was collected at Greenland about a half-mile 
from the nearest Cupressus. 
While collecting at Mt. Washington, N. H., during the last week 
in August of the present year, I observed spermogonia with aecidia 
just formiug on leaves of Pyrus American a along the path from 
the Mt. Washington cärriage road to a point about half a mile below 
the snow arch in Tuckerman’s Ravine. These developed in a moist 
chamber sufficiently to show the species to be cornuta. Later in 
the season Prof. Farlow found the same species of Roestelia well 
developed upon the same host at an altitude of 2,500 feet on Mt. 
Moriah, both these localities being miles from any Juniperus. Prof. 
Farlow has also collected the most typical form of cornuta at East- 
port, Maine, on the same host. 
In the vicinity of Boston, the various Gymnosporangia are 
about equally common, with the exception of the Cupressus forms, 
and here also botryapites is far more abundant and widely distri- 
buted than the comparative infrequency of Cupressus localities 
would lead one to expect. 
Despite these discrepancies, the species of Gymnosporangia 
with their Roesteliae, assuming my determination of lacerata and 
cornuta to be correct, may be with tolerable safety summarized as 
follows : 
G. conicum = K. cornuta. 
G. clavipes = R. aurantiaca. 
G. clavari aeforme = R. lacerata. 
G. macropus — R. p y r a t a. 
G. biseptatum = R. botryapites. 
G. Ellisii = R. transformans probably. 
G. g 1 o b o su m — 
In closing, I must express my great Obligation to Prof. Farlow 
for advice and assistance, as well as for the privilege of examining a 
large number of exsiccati without which any satisfactory results as 
regards the more obscure Roesteliae would have been impossible. 
Neue Litteratur 
zusammengestellt von 
De. Arthur Wüezburg, 
Bibliothekar im Kaiserlichen Gesundheitsamte in Berlin. 
Morphologie und Systematik. 
Leuekart, R.. Asconema gibbosum, ein Sphaerularia-artiger neuer Nematode. 
(Berichte über die Verhandl. der Kgl. Sachs. Ges. d. Wissensch. zu Leipzig. 
Mathem.-physik. Classe. 1886. Suppl. p. 356 — 365.) 
