REPORT OF THE STATE BOTANIST FOR I924 43 



54th Ann. Rep't N. Y. State Mus. 154. 1901), and at Ottawa, Can- 

 ada, by Macoun (no. 281, October 2, 1897). 



Dicaeoma Acetosae (Sebum.) Kuntze 

 On leaves of RumexAcetosella L., Orient, Long Island. 

 i?03' Lo/Z/a;;?, October 15, 1919 ( P u ccin i a Acetosae Korn.) 



Dicaeoma asterum (Schw.) Arthur & Kern' 

 A common rust, recorded here for certain unusual hosts, namely, 

 I on Aster acuminatus Michx. Boreas ponds, Essex 

 county. H. D. House, July 20, ig22. II-III on Carex Hough- 

 t o n i i Torrey, Elizabethtown, Essex county. Peck; on Carex 

 substricta (Kukenth.) Mackenzie, Woodville, Jefferson 

 county. H. D. House, September 15, 1922. 



Dicaeoma Eatoniae Arthur^ 

 Perch lake, Jeft"erson county, on sheaths, culms and leaves of 

 Sphenophollis pallens ( Spreng. ) Scribn. ( E a t o n i a 

 pennsylvanica Gray) . H. D. House, June 2y, 1922. The 

 aecial stage occurs on Ranunculus a b o r t i v u s L. 



Dicaeoma Clematidis (DC.) Arthur^ 

 Aecial stage on Thalictrum canadense Mill. (T . 

 p o 1 y g a m u m Muhl.) , Indian pass, Essex county. H. D. House, 

 July 15, 1923. The telial stage was also collected here on old 

 culms of Andropogon tenerum Vasey. 



Dicaeoma McClatchianum (D. & H.) Arthur^ 

 Long lake, Hamilton county, and Cascade lakes, Essex county, 

 on Scirpus micro carpus Presl. (S . rubrotinctus 

 Fernald). H. D. House, September 14 and 16, 1920. Previous 

 collections of this rust, on the same host, in this State have been 

 made only in the vicinity of Albany. 



Dicaeoma Majanthae (Sebum.) Arthur 

 The aecial stage frequent about Newcomb, Essex county, on 

 leaves of Trillium erectum L., and Trillium u n d u - 

 latum Willd. ( A e c i d i u m T r i 1 1 i i Burrill) , and also on 

 leaves of LI n i f o 1 i u m c a n a d e n s e (Desf.) Greene and 

 Streptopus rose us Michx. H. D. House, July 2 and 4, 1923. 



