355 



1909). Kellerman (Jour. Myc. 9:7. 1903) confirmed Arthur's results 

 as to the connection of Aecidium Sambuci with P. Atkinsoniana on Carex 

 lurida and with P. BoUeyana on C. trichocarpa. 



88. PUCCINIA Smilacis Schw. Schr. Nat. Ges. Leipzig 1:72. 1822. 

 Aecidium Smilacis Schw. Schr. Nat. Ges. Leipzig 1:69. 1822. 



On Smilaceae: 



Smilax glauca Walt., Selbyville, Oct. 4, 1907, (1752). 



Smilax rotundifolia L., Newark, October 1907, (2007) ; Collins 



Beach, Oct. 1, 1907, (1816); Selbyville, Oct. 4, 1907, (1754). 



This is an autoecious long cycle rust common throughout the eastern 



United States. No aecial collections have been made in Delaware. The 



aecia may be distinguished from the aecia of Puccinia macrosjiora (Pk.) 



Arth., which occur on Smilax in the same range, by the size of the 



aeciospores. In P. Smilacis the aecio.-pores are 17-22x20-30[ji with the wall.:! 



1-1 .5[ji, while the aecispores of P. macros pora measure 32-42x37-51tJi. with thick 



walls 1.5-2.5[j., thickened above to 5-lOix. 



89. Puccinia Sorghi Schw. Trans. Am. Phil. Soc. IL 4:295. 1832. 

 Puccinia Maydis Bereng. Atti Sci. Hal. 6:475. 1844. 

 Aecidium Oxalidis Thiim. Flora 59:425. 1876. 



On Poaceae: 



Zea Mays L., Faulkland, Sept. 8, 1885, A. Commons (210) ; 

 Newark, Sept. 17, 1890, F. D. Chester; Sept. 1907; Felton, 

 Sept. 5, 1907, (1735). 

 The corn rust is very common in Delaware and has been repeatedly 

 observed but apparently does little damage. 



Arthur in 1904 (Bot. Gaz. 38:64. 1904; .Jour. Myc. 11:65. 1905) 

 shows that the corn rust has its aecial stage on Oxalis. These results 

 were confirmed in 1905 by the same author (Jour. Myc. 12:17. 1906) 

 who successfully infected corn with aeciospores from Oxalis cymosa. 



90. Puccinia subnitens Diet. Erythoa 3:81. 1895. 



On Chenopodiaceae : L 



Atriplex hastata L., Lewes, April 1908, (2041), June 6, 1908, 

 (2038). 

 On Cruciferous seedling: L 



Lewes, April 23, 1908, (2025). 



