356 



On Polygonaceae : I. 



Polygonum aviculare L., Lewes, April 25, 1908, (2020). 

 On Poaceae: II, III. 



Distichlis spicata (L.) Greene, Lewes, Aug. 14, 1907, (1677), 



Nov. 16, 1907, (1854, 1855), April 25, 1908, (2021), June 6, 



1908, (2039). 



Arthur (Bot. Gaz. 35:19. 1903 first showed that the above species 



has its aecial form on Chenopodiaceae having- produced aecia on Cheno- 



podium album by sowings of teliospores from Distichlis spicata. In 1904 



(Jour. Myc. 11:54. 1905) he records successful infection results on 



Chenopodium album, Cleome spinoya, Lepidinm apetalum, L. virginicum, 



Sophia incisa, Erysimum asperum, from sowings of teliospores from 



Distichlis spicata. This is remarkable since the above hosts represent 



three distinct families of flowering plants. 



In 1905 (Jour. Myc. 12:16. 1906) Bursa Bursa pastoris is added 

 to the above list, since aecia were produced following sowings of telio- 

 spores from Distichlis spicata. Further results are recorded by the 

 same author in 1906 (Jour. Myc. 13:197. 1907) and in 1907 (Jour. Myc. 

 14:15. 1908). 



In 1908 Arthur recoi-ds successful infection on Chenopodium album 

 resulting from sowings of teliospores from Distichlis spicata collected 

 at Lewes, Del., and sent to Dr. Arthur by the writer (Mycol. 1:234. 

 1909). Cultures from Nebraska made in the same year were successful 

 on C. album. Material from Nevada successfully infected C. album., 

 Atriplex hastata, and Sarcobatus vermicidatus. 



Further culture work with this species is recorded by Arthur in 

 Mycol. 2:225. 1910; 4:18. 1912. (See also Bethel, Phytopath. 7:92-94. 

 1917.) 



91. PucciNiA Taraxaci (Rebent.) Plowr. Brit. Ured. and Ust. 186. 

 1889. 

 Puccinia Phaseoli var. Taraxaci Rebent. Fl. Neomarch 256. 1804. 

 On Cichoriaceae : 



Taraxacum Taraxacum (L.) Karst., — Newark, July 1907, 

 (1671). 

 This is doubtless a brachy-form though no pycnia have yet been 

 demonstrated to accompany the primary uredinia. Cultures will be 



