1917] ARTHUR— RUSTS OF RUBUS 509 



(founded on Puccinia Peckiana Howe and Caeoma inter stitialis 

 Schlecht., with Rubus saxatilis cited) Gymnoconia Peckiana Kleb. 

 Krypt. Fl. Brand. 5(1:665. 1913. 



A. Hosts for aecia 



IV. Arctici (northern dwarf raspberry) 



4. R. stellatus Smith. — Alaska: Unalaschka (Bernhardt 

 herbarium at Mo. Bot. Garden). 



5. R. acaulis Michx. (distributed as R. arcticus). — Yukon: 

 White Horse Rapids, June 16, 1899, /. B. Tarleton. 



VIII. Idaei (raspberry) 



21. R. occidentalis L. (R. idaeus americanus Torr.), black 

 raspberry. — Vermont: Charlotte, June 12, 1880, C. G. Pringle 

 1 1 28; Burlington, June n, 1891, Collins F1363; Ontario: Lon- 

 don, May 20, 191 1, /. Dearness 1838 c; Glenora, June 7, 191 2, 

 /. Dearness (Barth. N. Am. Ured. 1208); Michigan: Ann Arbor, 

 June 6, 1916, C. A. Ludwig 131; Ohio: Olena, Huron County, 

 June 2, 1902, 0. E. Jennings (Kellerm. Ohio Fungi 67); Massa- 

 chusetts: Granville, June 1883, A. B. Seymour; Connecticut: 

 Central Village, June 28, 1903, John L. Sheldon; New York: 

 Onondaga Valley, June 1885, L. M. Underwood; Ithaca, June 27, 

 1907, Whetzel and Barms; West Virginia: Seneca, May 30, 1904, 

 John L. Sheldon 25; Morgantown (cult.), June 8, 1904, John L. 



Sheldon 502. 



32. R. strigosus Michx. (R. idaeus aculeatissimus Rob. and 



Fern.), red raspberry. — Vermont: Burlington, June 10, 1891, 

 Collins F1362; Burlington, June 14, 1893, L. R. Jones; Burling- 

 ton, June 10, 1898, W. A. Orion F1807; New Brunswick: Salis- 

 bury, July 2, 1905, C. L. Moore 9; New York: Lyndonville, June 1, 

 1886, C. E. F airman; Massachusetts: Newton, 1880, W. G. Farlow 

 (Ellis, N. Am. Fungi 277, 278, Roumeguere, Fungi Gall. 874). 



XVIII. Arguti (high blackberry) 



79. R. nigrobaccus Bailey.— Vermont: Without locality, 

 180?, A. J. Grout; New York: Alcove, May and June 1892, C. L. 



