186 



Mycologia 



" (32153) ; in 1919, Gainesville, March 20 (20806) ; in 1919, Lake 

 City, March 12 (32231) ; Georgia, in 191 5, Wayeross, April 1 

 (17594). 



P. rigid®, New Jersey, in 1916, Pleas.antville, June 5 (22347) ; 

 Mount Calvary, June 5 (22348) ; in 191 7, Mount Calvary May 12 

 (26522) ; District of Columbia in 1917, Washington, May 31 

 (24522). 



II and III. On Lacinaria: 



L. elegans, Florida, in 1915, Ocala, October 27 (20073) ; Jack- 

 sonville, October 30 (20085). 



L. elegantula, Alabama, in 1915, Auburn, October 7 (18895). 



L. gracilis, Florida, in 1915, Lake City, October 25 (20057) 5 

 Brooksville, October 28 (20077). 



L. graminifolia, New Jersey, in 191 5, Pleasantville, September 

 12 (17952) ; in 1916, Mount Calvary, September 2 (22762, 22763, 

 22764, 22765, 22766, 22767 and 22768) ; in 1917, September 18 

 (22620). 



L. laxa, Florida, in 191 5, Tampa, October 29 (20082). 



L. squarrulosa, Arkansas, in 191 5, Bald Knob, October 12 

 (18890) ; Tennessee, in 1916, Big Frog Mountain, September 21 

 (22864) ; Georgia, in 1916, Atlanta, September 24 (22958). 



L. tenuifolia, Florida, in 191 5, Lake City, October 25 (20058) ; 

 Tampa, October 29 (20081) ; Jacksonville, October 30 (20086). 



From these data, it will be seen that our known range of Coleo- 

 sporium laciniariae is from New Jersey to Florida and Arkansas. 



Peridermium minutum 



Peridermium minutum Hedge, and Hunt (7) is a small species 

 of leaf Peridermium known only from Florida. It was first col- 

 lected at Brooksville in 191 5, and again in 1916 in the same 

 locality and also at Gainesville. Repeated attempts without re- 

 sult were made in 1916 to infect plants withthe aeciospores of this 

 rust, using species of Aster, Campanula, Calonyction, Coreopsis, 

 Chrysopsis, Elephantopus, Helianthus, Ipomoea, Laciniaria, Par- 

 thenium, Pharbitis, Quamoclit, Silphium, Solidago, Verbesina and 

 Vernonia. On May 6, 1918, near Gainesville, Fla., the uredinia 

 of a Cdleosporium were found occurring abundantly on the leaves 



