Fungous diseases of plants . ; C, var. Solani Burt. Atkinson, Geo. F. Some Diseases of Cotton. Ala. Agl. Exp. Sta. Built. 41: 30-39. , G. P. Rhizoctonia (Rosette). Conn. Agl. Exp. Sta. Rept. (1904): 325-326. //. 26. Jigs. , B. M., and Stewart, F. C. The Sterile Fungus Rhizoctonia. Cornell University Agl. Exp. Sta. Built. 186: 50-76. Jigs. 15-2j. 1901. Ibid. N. Y. (Geneva) Agl. Exp. Sta. Built. 186 : 4-30. Jigs. 13-23. , L. H. Preliminary Notes on a Root-Rot Disease of Sugar Beets. Iowa Agl. Exp. Sta. Built. 15: 243-251. pis. 3-4. , F. M. Potato Failur
Fungous diseases of plants . ; C, var. Solani Burt. Atkinson, Geo. F. Some Diseases of Cotton. Ala. Agl. Exp. Sta. Built. 41: 30-39. , G. P. Rhizoctonia (Rosette). Conn. Agl. Exp. Sta. Rept. (1904): 325-326. //. 26. Jigs. , B. M., and Stewart, F. C. The Sterile Fungus Rhizoctonia. Cornell University Agl. Exp. Sta. Built. 186: 50-76. Jigs. 15-2j. 1901. Ibid. N. Y. (Geneva) Agl. Exp. Sta. Built. 186 : 4-30. Jigs. 13-23. , L. H. Preliminary Notes on a Root-Rot Disease of Sugar Beets. Iowa Agl. Exp. Sta. Built. 15: 243-251. pis. 3-4. , F. M. Potato Failures. (Two Reports.) Colo. Agl. Exp. Sta. Bullts. 70: 1-20. 1902; 91: 1-33. , F. M. (Tomato Diseases) Corticiuin .agiiiniV^. & C). Fla. Agl. Exp. Sta. Rept. (1905): P. Pflanzenkrankheiten (2d ed.), /. <., 354-361. A fungus causing important diseases of the potato and perhapsof a large number of other herbaceous and even woody plants hasrecently been placed under the name above given. The various. Fig. 217. Lettuce Seedlings attacked by Rhizoctonia plant diseases due to this fungus liad formerly ^been referred tothe form genus Rhizoctonia, which is a genus established byDe Candolle in 1815, including certain sterile fungi occurringupon the roots of plants. There are great difficulties in determin-ing what might be considered species in forms which are re-ferred to this form genus, and the Corticium stage has not yet AirrOBASlDlOMYCETES 445 been studied in sufficient detail to be of much assistance. Never-theless, there are certain characters of the mycelium by means ofwhich it was believed to be possible more or less accurately todistinguish the Rhizoctonia from the mycelium of other fungi, oreven with some accuracy to distinguish different species of Rhi-zoctonia, or sterile stages referred to the genus. It is only withinthe past four years that there has been found associated with thesterile mycelial form (the Rhizoctonia) this perfect stage, whichhas
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