92 

 Aeeidium Sommerfeltii, Joh. 



Note. There are at least two species of Aeeidium on species of Thalic- 

 trum in North America; Aeeidium Sommerfeltii, Joh. 1884 based on Cceoma 

 Thalictri, Sommf. 182S and Aeeidium Thalietri-flavi, Wint. based on 

 Aeeidium Ranunculacearum, var. Thalictri-flavi, DC. 1815, from which 

 Aeeidium Thalictri, Grev. 1823 appears not to differ. 



We use the name Aeeidium Sommerfeltii, Joh. for the species which occurs 

 on Thalictrum alpinum in Greenland and the northern and higher parts of 

 America and possibly on some other hosts. 



American mycologists have as a rule followed De Toni who refers to Aeeid- 

 ium Sommerfeltii all Aecidia on Thalictrum in Europe and North America, 

 but others have used the name Aeeidium Thalictri in the sense in which we. 

 here use the name Aeeidium Thalictri-flavi. 



Of the Aecidia on Thalictrum Fendleri, referred variously to Aeeidium 

 Sommerfeltii and Aeeidium Thalictri, the specimens we have seen seem to be 

 Aeeidium Thalictri-flavi ; but in some cases genuine Aeeidium Sommerfeltii 

 appears to have been found on that host. 



According to Juel Oefv. K. Vet.-Akad. Foerh. 52: 383. 1885, Aeeidium 

 Sommerfeltii is the Aeeidium of Puccinia septentrionalis, Juel on Polygonum 

 viviparum. See also Syd. Mon. Ured. 1: 575. 15 May 1903, Klebahn, 

 Rostpilze 321. 1904. 



On Thalictrum alpinum. 



Rostr. Meddelelser om Groenl. 3: 536. 1888. 

 De Toni in Sacc. Syll. 7 : 775- d. 28 Oct. 1888. 

 Rostr. Meddelelser om Groenl. 3 : 604. 1891. 



On Thalictrum Fendleri. 



PCockerell, Zoe. 4 : 283. Oct. 1893. 



Henn. Hedw. 37 : 272. 25 Oct. 1898. 



Hume, Proc. Davenport Acad. 7 : 252. 12 May 1899. 



Cockerell, Jour. Myc. 10 : 51. 19 March 1904. 



Miscellanea. 



PHume, Proc. Davenport Acad. 7 : 252. 12 May 1899. T. sparsiflorum. 

 PBlasdale in Davy, Bull. U. S. Agr. PI. Industry 12 : 75. 1902. Aquilegia. 



Aeeidium Sommerfeltii, Auct. Amer. p. p. 



See Aeeidium ThalictrUflavi, (D C.) Wint. 



Aeeidium Sphseraleese, Ell. & Ev. 



Note. The species of Aeeidium on Malvacece, some of which were described 

 from dried specimens, appear to have been unduly multiplied. See Aeeidium 

 Malvastri, Ell. & Tracy, Aeeidium intcrveniens, (Pk.), Aeeidium Napeece, 

 Arth. & Holw. and Aeeidium Callirrhoes, Ell. & Kellerm. See Arth. Bull. 

 Torr. Bot. Club 31; 7. 19 Jan. 1904. See also Syd. Mon. Ured. 1: 478. 

 15 May 1903. 



Ell. & Ev. Bull. Torr. Bot. Club 22 : 364. d. 31 Aug. 1895. 



Sacc. Hedw. 35 : xvii. 25 Feb. 1896. [Reportorium no. 7.] 

 *EU. & Ev. N. A. F. i 345 . Feb. 1896. 

 *E11. & Ev. Fung. Columb. S71. April 1896. 



Aeeidium splendens, Wint. 



See Aeeidium Crotonopsidis, Burrill. 



Aeeidium Sprag-uese, Hark. 



Note. Described by the author as the recidial stage of Uromvces Spraguea, 

 Hark. 



