BIBLIOGRAPHY." 
By P. L. Ricker. 
The following bibliography includes all the works cited in the 
descriptive catalogue, giving as far as possible the libraries in which 
they have been consulted. For the benefit of Minnesota students of 
lichens, the works known to be in the library of the University of Min- 
nesota are also indicated. In addition, for the assistance of stu- 
dents of lichenology, about fifty titles which have been consulted in 
determining the types of lichen genera are also included. 
The titles under each author’s name are arranged chronologically. 
The following abbreviations are used to indicate the libraries in 
which the works have been consulted: 
AGR. United States Department of Agriculture. 
ASH. Prof. A. S. Hitchcock, United States Department of Agri- 
culture. 
Amuerst. Amherst College, Amherst, Mass. (Tuckerman’s library.) 
FARL, Dr. W. G. Farlow, Cambridge, Mass. 
TINK, Prof. Bruce Fink, Oxford, Ohio. 
GH. Gray Herbarium, Cambridge, Mass. 
GREENE. Dr. E. L. Greene, United States National Museum. 
HC, Harvard College. 
Hom. Dr. Theodor Holm, Brookland, D. ©. 
Le, Library of Congress. 
Lioyp. The Lloyd Library, Cincinnati, Ohio. 
Minn. University of Minnesota, Minneapolis. 
Mo. BG. Missouri Botanical Garden. 
NM. National Museum. 
NYBG. ~~ New York Botanical Garden. 
Puin. Acap. Academy of Natural Sciences, Philadelphia. 
PSNH. Portland Society of Natural History, Portland, Me. 
SC. Smithsonian Collection, Library of Congress. 
Sura. Surgeon-General’s Library. 
Ach. Acuarius, Ertx. Nya och windre kanda svenska laf-arler, beskrifne. Vet. 
Akad. Nya Handl. 16: 1-21. pl. 1. 1795. 
Ach. Lich. Suec. Acuarius, Erik. Lichenographiae Suecicae prodromus. 3p. lL. 
) ig I ] 
xxv, 264 p. 2 col. pl. Lincopiae, D. G. Bjérn, 1798. 224 em, 
Fink. Luoyp. Aar. 
Ach. Meth. Lich. Acnarius, Ertk. Methodus qua omnes detectos lichenes 
secundum organa carpomorpha ad genera, species et varietates redigere atque 
observationibus illustrare. 2 p.1. lv, 393 p. 8 pl. Stockholm, F. D. D. Ulrich, 
1803. 21 em. Minn. Fink. Luoyn. SC, 
Supplementum p. i-iv, 5-52. At the end. 
« For works on Minnesota lichens, see Special Bibliography, p. 4. 
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