162 ILLINOIS ACADEMY OF SCIENCE There is practically no danger of extermination facing this pretty species for its home has absolutely no value to man and only the wild climbing folk can by any possibility obtain pre-carious footing where it dwells in peace. The hog, that arch enemy of the wild plant people, can never tread these cliffs and the average human plant hog is too solicitous of his neck or extremities to venture on these slippery steeps. In conclusion, a brief statement of the geographical distri-bution of our plant will be interesting. Gray, Britton, Bailey and others agree in giving it a far northern range extending well into the arctic regions of North America and reaching the United States in Northern Maine, Vermont, New York, Upper Michigan, Wisconsin, Minnesota and so North West to the Saskatchewan. This remarkable southern extension into the northwestern Illinois, therefore, is Mistassinica's "farthest south" by over one hundred miles from any neighboring station. The inference is drawn that this station is a remnant of a vast horde of the plant that in preglacial days occupied much of the rock region of Northeastern North America, the glaciers hav-ing obliterated most of these plants, the Illinois locality es-caping because the ice destroyer did not there encroach. PORTO RICAN FUNGI, OLD AND NEW F. L. Stevens^ University of Illinois While numerous collectors have focused their attention on the flowering plants and ferns of Porto Rico, comparatively little study has been made of the lesser cryptogams, especially of the fungi. Mr. A. A. Heller collected fungi in Porto Rico in January and February, 1900, and the collection is reported upon by F. S. Earle'. Heller's collection of December and January, 1902-1903, are reported also by Earle^ Earle also made re-ports of his own observations on the fungi of the island'. Olive and Whetzel reported upon several species of rusts which they collected in Porto Rico in the summer of 1916.* 1. Muhlenbergia 1:10, July, 1901. 2. Bulletin of the New York Botanical Garden, 3: 301, Jun« 30, 1904. 3. Annual report of the Office of Experiment Stations, 454, 1903. 4. American Journal of Botany, 1 :44-52, January, 1917.
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