" COEKY- " OR "powdery-scab" IN THE POTATO TUBER. 527 



and we find it adopted by Berkeley* himself, by Cooke,! ,]:*by Smith, § 

 and by Plowright.|| The last named gives a list of the older syno- 

 nyms of the organism, but there is a misprint in the date given for 

 Wallroth's paper, and Plowright, like all writers who have dealt 

 with the organism since Wallroth's time, with the exception of 

 Eabenhorst and Martius, overlooked entirely the most important 

 early description ol the organism published in Wallroth's Beitrdge 

 zuT Botanik, and already referred to. 



In 1877 Fischer de WaldheimH transferred the organism to 

 another genus, and re-named it Sorosporium scabies Berk., and this 

 combination was adopted by various subsequent authors such as 

 Saccardo,*^ MasseeI t, + :I: and Oooke.§§ 



In 1886 the organism was discovered anew in Scandinavia by 

 Brunchorst,|||| who, not being aware of the previous descriptions by 

 Berkeley, Martius, and Wallroth, described it under the name of 

 Spongospora Solani, nov. gen. et sp., considering it as belonging to 

 the Myxomycetes. Under this name it is referred to by Frank in 

 1897 in his Kampfbuch,^*^ and by Lindau**''' in 1908 in Sorauer's 

 iHandbuch. Johnson met with the organism for the first time in 

 Ireland in 1904 and published a short account of it three years later,! ft 

 adopting Brunchorst's name, while the same author gave another 

 account of it, still adhering to the name oi Spongospora Solani, 

 Brunch., in 1908, but stating at the end of his paper that the 

 examination of type-herbarium material which he had received from 

 Kew showed that Sorosporium scabies (Berk.) Fischer de Waldheim 

 was identical with Spongospora Solani Brunch. 



Later in this year Massee§§§ described the organism under the 

 name of Spongospora scabies, thus combining Brunchorst's generic 

 and Berkeley's specific names, a combination which was not necessary 

 and is untenable. 



Up to this latter year (1908), however, all of the four last-named 



* Berkeley, Outlines of British Fungology, 1860, p. 336. 



t Cooke, Microscopic Fungi, 1865, p. 212. 



$ Cooke, Handbook of British Fungi, vol. ii. 1871, p. 516. 



§ Smith, Diseases of Field and Garden Crops, 1884, p. 35. 

 1) 11 Plowright, A Monograph of the British Uredineae and Ustilagineae, 1889, 

 I p. 294. 



II Fischer von Waldheim, Apercu Syst. Ustil. 1877, p. 33. 

 ** Saccardo, Sylloge Fungorum, vol. vii. p. 513. 



tt Massee, British Fungi, Phycomycetes and Ustilagineae, 1891, p. 202. 

 it Massee, A Text-Book of Plant Diseases, 1899, pp. 225 and 405. 

 §§ Cooke, Fungoid Pests of Cultivated Plants, 1906, p. 92. 



nil Brunchorst, "Ueber eine sehr verbreitete Krankheit der Kartoffelknollen.' 

 S&rgens Museums Aarsberetning, 1886, p. 219. 



TITf Frank, Kampfbuch gegen die Schadlinge unserer Feldfruchte, Berlin, 1897. 



*** LiNDAU, Handbuch der Pflanzenkrankheiten, von Prof. Dr. Paul Sorauer, 

 Bd. II, 1908, p. 76. 



ttt Johnson, ''^Der Kartoffelschorf Spongospora Solani Brunch." Jahresber. d. 

 Werein, d. Vert. d. angew. Botanik, Bd. 4, 1907. 



I ttt Johnson, '^Spongospora Solani Brunch. (Corky Scab)," Econ. Proc. Boy. 

 Wvh. SoG. 1, 1908, part 12. 



§§§ [Massee], '"Corky Scab* of Potatoes (Spongospora scabies, Mass.)," Journ. 

 \Sd. Agric. vol. xv. No. 8, November 1908, p. 592. 



