442 
referred to as occurring on Xanthium canadense Mill. and X. 
strumarium L. The exact identity of the host can not now be 
determined and the collections so referred are here placed under 
X. pennsylvanicum-and X. americanum respectively. 
41. DICAEOMA(?) ALETRIDIS (B. & C.) Kunize. 
Puccinia Aletridis B. & C. 
On Aletris farinosa L. 1903:146. 
Lake, 1884 (Hill). 
42. DICAEOMA ANDROPOGONIS (Schw.) Kuntze. 
Aecidium Penstemonis Schw. 
Puccinia Andropogi Schw. 
I. On Penstemon hirsutus (L.) Willd. 1896:217. 1908:90. 
Tippecanoe, 1896 (Stuart in Arth. & Holw. Ured. Exsiee. et 
Icones, 39a). 
III. On Andropogon fureatus Muhl. 1896:219. 
Tippecanoe, 1896 (Stuart, Snyder). 
On Schizachyrium scoparium (Michx.) Nash (Andropogon  sco- 
parius Michx.) 1896:219. 
Tippecanoe, 1896 (Snyder in Arth. & Holw. Ured. Exciee. et 
Icones, 39f); 1898 (Stuart in Arth. & Holw. Ured. Exsice. et 
Icones, 39e). 
43. DICAEOMA ANGUSTATUM (Pk.) Kunize. 
Puccinia angustata Peck. 
Aecidium Lycopi Gerard. 
I. On Lycopus americanus Muhl. (L. sinuatus Ell.)  1893:50. 
1898:189; 1908:91. 
Jasper, 1903 (Arthur); Tippecanoe, 1898 (Snyder); Vigo, 1893 
(Underwood). 
On Lycopus uniflorus Michx. 
Jasper, 1903 (Arthur); Tippecanoe, 1908 (Johnson). 
III. On Seirpus atroyirens Muhl. 1893:52. 1896:219. 1905:181. 
Hamilton, 1905 (Wilson); Jefferson, 1914 (Demaree); Johnson, 
1890 (Fisher); Putnam, 1891 (Underwood); Owen, 1911 (Pipal); 
Tippecanoe, 1889 (Bolley); 1896 (Snyder). 
