102 Rhodora [May 
of these is from North Baltimore, New York (E. C. Howe, 1871); 
the other from Willoughby Lake, Vermont (W. G. Farlow, 1880). 
The specimens now under consideration were collected by Collins & 
Fernald at Ile au Massacre, Bic, July 3, 1907 (no. 4842). The 
members of the group of Collema pulposum are variable and are not 
well-known in North America. Prof. Fink distributed specimens 
from Iowa under the name of Collema plicatile, but they are different 
from the specimens cited above. Dr. Herre, in his account of the 
Lichens of the Santa Cruz Peninsula, California (Proc. Wash. Acad. 
Sci. 7: 378) lists a plant under the name of Collema plicatile Acharius, 
the determination being verified by Zahlbruckner. Judging from the 
description, however, the California plant is also different from the 
material in the Tuckerman Herbarium. If this doubt in regard to the 
North American material of Collema plicatile is taken into considera- 
tion, all that can be said is that the Bic specimens apparently agree 
with the ‘Tuckerman conception of the species. 
Specimens of all of the species mentioned are in Prof. Collins’ her- 
barium and duplicates are in my own herbarium. 
WELLESLEY CorrEGE, Wellesley, Massachusetts. 
RECENT NOMENCLATORIAL CHANGES IN THE 
GENUS CORALLORRHIZA. 
Oakes AMES. 
C. MACULATA AND C. WISTERIANA. 
THE adoption of the International Rules governing botanical 
nomenclature by the editors has produced in Gray’s New Manual 
of Botany a number of changes, in the names of the genera and species, 
the origin of which, in the Orchidaceae at least, is readily traceable. 
In the majority of cases these changes have been made in strict accord- 
ance with the laws of priority, and the identity of the plants in question 
indisputably ascertained. The disappearance, however, of Corallor- 
rhiza multiflora Nutt., from among the familiar names used in the 
sixth edition of the Manual, while necessitated by the rules adopted 
