. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIX ^5*7, U. S. DEPARTMENT OF AGRICULTURE. To sum up briefly: Pinus cembra, the probable original pine host, ranges across northern Asia; and the fungus is reported from western eastern, and central Asia, in some places where it may easily be endemic. In North America, Cronartium rihicola was first found in 1906 at Geneva, N. Y. (3, 150). Later findings have indicated that it was here in the Northeastern States as early as 1898 (108, 136, p. 6). It might have been in North America a few years, but not many, befo
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIX ^5*7, U. S. DEPARTMENT OF AGRICULTURE. To sum up briefly: Pinus cembra, the probable original pine host, ranges across northern Asia; and the fungus is reported from western eastern, and central Asia, in some places where it may easily be endemic. In North America, Cronartium rihicola was first found in 1906 at Geneva, N. Y. (3, 150). Later findings have indicated that it was here in the Northeastern States as early as 1898 (108, 136, p. 6). It might have been in North America a few years, but not many, before that date. This is supported by Clinton (13), who unsuccessfully ex- amined specimens of Ribes wliich are in some of the larger herbaria of the eastern part of this country. The writer has supplemented. Fig. 3.—Outline map of the northeastern part of the United States, showing (by black dots) the known distribution of white-pine bUster rust in North America to and including 1909. Clinton's work by examining the Ribes specimens in several addi- tional herbaria. These include the Pringle herbarium at the Uni- versity of Vermont and the local collections of the University of Vermont; of Dartmouth College; of President Ezra Brainerd, of Middlebury College; of Mr. C. A. Weatherby, of East Hartford, Conn.; and of Mr. C. H. Bissell, of Southington, Conn. The most notable herbarium examined was that of the Boston Society of Natural History, which contains many New England collections made in the early years of the nineteenth century. Moreover, such keen fungus collectors as Farlow, Seymour, G. P. Clinton, Peck, Ellis, George Clinton, Stewart, and many others, never collected Cronartium rihicola until 1906, showing that it is a recent immi- grant. Since 1909, when it was first found in North America on white pines, Cronartium rihicola has spread until it is firmly estab-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for
Size: 1979px × 1262px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
