. Counties from which rust has been reported on cultivated flax to the Plant Disease Survey, ^ R: Reported on cultivated flax to the Plant Disease Purvey, locality not given. A: On Linum usitQtissin:um, (J. G. Arthur, iU km, Fl. 7^: 101-102. 1907) (a): On Linum spp.(Arthur), 1. c.) +: On Linum spp., counties (Patterson, Diehl, a Cash, U. 3. D. A. Circ- 195. 1922).. *: Dominion Plant Disease Purvey Annual Reports Fig. 35. Distribution of flax rust in the United states and in Canada. In Minnesota tho variety NDR #114 is said to be susceptible to rust, while Minnesota 25 is resistant, an
. Counties from which rust has been reported on cultivated flax to the Plant Disease Survey, ^ R: Reported on cultivated flax to the Plant Disease Purvey, locality not given. A: On Linum usitQtissin:um, (J. G. Arthur, iU km, Fl. 7^: 101-102. 1907) (a): On Linum spp.(Arthur), 1. c.) +: On Linum spp., counties (Patterson, Diehl, a Cash, U. 3. D. A. Circ- 195. 1922).. *: Dominion Plant Disease Purvey Annual Reports Fig. 35. Distribution of flax rust in the United states and in Canada. In Minnesota tho variety NDR #114 is said to be susceptible to rust, while Minnesota 25 is resistant, and "Argentina" immune. Brcntzel reports that "Iv^ny varieties show rust infection, including many that are resistant to wilt*" The following report hi^s been supplied by H. D. Barker: "Flax rust was reported July 7 f^^o^ Goodhue County, Minnesota. Following this date it was reported from several other localities in the state. For the first time in the history of the Plant Dis- ease Survey, flax rust v;as general throughout Minnesota. Usually the disease occurs quite comnpjrily in the Red River Valley, but out- side of this limited section near the border of Minnesota and North Dakota extending into tho northeast corner of South Dakota, it has not, at least since I have been v/orking on flax rust, been found to occur very abundantly. This year, however, it v;as general through-
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