Jackson : New Rusts on Carduaceae 



111 



This species is easily distinguished from all other Carduaceous 

 rusts, which we have studied, by the strongly compressed character 

 of the urediniospores and the inflation of the pedicels of the telio- 

 spores when wet. 



The host was determined by Dr. S. F. Blake. 



Puccinia triannulata (Berk. & Curt.) comb. nov. 

 Uromyces triannulatus Berk. & Curt.; Berkeley, Grevillea 3: 56. 



1874. 



Puccinia mirifica Dietel & Holway; Dietel, Erythea 3: 79. 1895. 

 Caeomusus triannulatus Kuntze, Rev. Gen. 3 3 : 451. 1898. 

 Dicaeoma triannulatum Arth. Result Sci. Cong. Bot. Vienne 346. 

 1906. 



Through the courtesy of Dr. R. Thaxter, I have had the oppor- 

 tunity of examining a fragment of the type of Uromyces triannu- 

 latus Berk. & Curt, from the Curtis Herbarium at Harvard Uni- 

 versity. A second fragment was obtained from the Kew Her- 

 barium by Dr. J. C. Arthur. Both bear the same number, 2270. 

 The specimen from the Curtis Herbarium is labeled as follows : 

 " Uredo triannulata B. & C. on Borrichia frutescens Santee Canal 

 ( ?) S. C, June 1848. Ravenel 758." The specimen from Kew 

 is labeled, " Uromyces triannulatus B. & C. in Borrichia frutescens 

 Car. Inf." 



An examination of these specimens leaves no doubt that Uro- 

 myces triannulatus was based on the uredinial stage of the species 

 later described as Puccinia mirifica Dietel & Holway and now 

 known to occur on B. frutescens from South Carolina, Florida, and 

 Texas, and on B. arborescens from Florida, the Bahamas, and 

 Bermuda. 



Pycnia occur with the uredinia in several collections, leaving no 

 doubt that this is a true brachy-Puccinia referable to the genus 

 Bullaria in the classification proposed by Dr. Arthur. 



Puccinia Balsamorrhizae Peck 

 When preparing the manuscript of this species for the North 

 ^American Flora, two points of interest were noted which seem 

 worthy of record at this time. 



A comparison of the type with that of P. Wyethiae Peck re- 



