Agricultural Experiment Station. UNIVERSITY OF WYOMING. BOARD OF TRUSTEES. HON. STEPHEN W. DOWNEY, PRESIDENT, Laramie, 1897 1897 1897 ERRATA. Page 83 read Erysimum for Erisymum. Page 170 read Monolepis for Monolepsis. Page 199 read Cryptogramme for Chryptogramma. Page 142 line 5 from bottom read Triassic for Tertiary. PAGE. Showing remarkable root development ROCKY MOUNTAIN YELLOW PINE. length from tree to point where root enters the ground, 15 feet. Sand Hills, 12 miles north of Lusk. FROM PHOTOGRAPH BY PROF. B. C. BUPPUM. -ON THE FLORA OF WYOMING. BY AVEN NELSON. INTRODUCTION. Among the duties planned by and for the Botanist of the Experiment Station for the year 1894 were the following: I. To study the Fungi affecting the ordinary farm crops and the best means of combatting the same. 2. To give attention to the weed question, with a view to finding effective methods for exterminating or preventing the spread of the more troublesome ones. state. 3. The building up of the herbarium. 4. The preparation of a report upon the flora of the These all received attention to the extent of the time that could be spared from other imperative duties, such as those of the classroom and the routine work of the Station, but it was found necessary to continue the same subjects for 1895. During that time one phase of the first has had attention in Bulletin No. 21, "The Smut of Grains and Potato Scab;" the second in Bulletin No. 19, "Squrrel-Tail Grass (Fox-Tail)," our worst weed, and a Press Bulletin on the Russian Thistle." The third has, of course, gone on incidentally with and preparatory to the fourth. Although what has been done in the study of the flora of the state has cost no little time and labor yet the work seems but barely begun. The preparation of a full and reasonably inclusive report on the flora of a great state of nearly 100,000 square miles would be the work of years for a corps of men devoting their full time to the matter in hand, so one man with a full slate of college teaching and other Experiment Station duties, besides that of working up the flora, would lose courage were it not for the absorbing interest of the subject itself. Since to delay the report until it should be approximately complete would project it far into the future and might possibly result in its never being published, it has seemed advisable to publish the results thus far attained. As the work goes on and results accumulate, other reports may, from time to time, appear to record the additions. COLLECTING TRIPS. The basis for the following brief report and the catalogue of species rests mainly upon the collections made by the writer in 1894 and in 1895. With one exception, as given below, no systematic work in collecting had previously been done. In 1892, Prof. B. C. Buffum, at that time acting botanist of the Station, spent the mid-summer months in the field collecting-primarily to secure for the University and the Station a collection of the native grasses and forage plants, an exhibit of which was to be made at the World's Fair at Chicago in 1893. Incidently much more was done, for a considerable amount of good material, other than grasses, must be put down to the credit of the expedition. From this material were obtained the numbers which formed the nucleus of the present collection in our her |