REPORT OF THE STATE BOTANIST FOR I924 97 



Strictly parasitic on some immature sphaeropsidale, 90-150 fx in 

 diameter, showing an occasional macrophomoid or diplodinoid coni- 

 dium 20 X 10 ju, ; on bark of Acer p e n n s y 1 v a n i c u m L., 

 Catskill mountains. C. H. Peck (date of collection not indicated). 



The conidia are distinctly different from those of H e 1 m i n - 

 t h o s p o r i u m e p i s p h a e r i c u m C. & P., occurring on "some 

 effete Diatrype," which proves on careful examination to be M e 1 o - 

 gramma Bulliardi Tul. The conidia of H. Phomatae 

 are smaller, more uniformly colored and lack the characteristic 

 thickening of the second and third cells which occurs in H . e p i s - 

 phaericum. 



Cercospora avicularis Winter 



On leaves of Polygonum a v i c u 1 a r e L., Monroe, Orange 

 county. C. H. Peck, July (year of collection not indicated). 



Cercospora caricina Ell. & Dearn. 

 Newcomb, Essex county, on leaves of Carex arctata Boott. 

 H. D. House, July 21, 1922. Also collected by Doctor Peck at 

 North Elba on Carex lacustris Willd. Superficially hard 

 to distinguish from Cercospora microstigma Sacc, but 

 there are marked differences in the spores. 



Cercospora Cypripedii Ell. & Dearn. 

 Newcomb, Essex county, on living and languishing leaves of 

 C y p r i p e d i u m r e g i n a e Walt. H . D. House, August 4, 1921. 



Cercospora elongata Peck 



On living and languishing leaves of Dipsacus sylvestris 

 L. near Oneida in Oneida county. H. D. House, September 16, 

 1923. The type was cnllecteed by Doctor Peck at Jamesville, Onon- 

 daga county. 



Cercospora Gentianae Peck 



Newcomb, Essex county, on living and languishing leaves of 

 Gentiana linearis Froel. H. D. House, August 4, 1921. 

 The largest spores in this material are up to 90 /x in length, and 

 exceed the measurements given by Doctor Peck. 



Cercospora omphacodes E. & H. 

 On living and languishing leaves of Phlox divaricata L. 

 Oneida, Oneida county. H. D. House, May 15, 1920, and near 

 Henderson Harbor, June 7, 1923. 



