REPORT OF THE STATE BOTANIST I9O9 2.J 



Panicum spretum Schultes 

 Near Albany ; Riverhead and Orient Point, Suffolk co. and White- 

 hall, Washington co. July. Formerly confused with Panicum 

 d i c h o t o m u m L. 



Peridermium strobi Kleb. 



Seedling white pines, P i n u s s t r o b u s L. Lake Clear Junc- 

 tion, Franklin co. October. Perley Spaulding and C. R. Pettis. 

 Our specimens are immature. 



This parasitic fungus is destructive to white pine trees. It is 

 dimorphic. Cronartium ribicola Dietr. is a form which 

 develops on leaves of currant bushes. Its spores are capable of 

 infecting white pine trees and reproducing the pine rust, Peri- 

 dermium strobi, in them. To prevent this it is important 

 that currant and gooseberry bushes whose leaves are attacked by 

 the Cronartium should be destroyed at once. 



Pezizella lanceolato-paraphysata Rehm 



Dead stems of cultivated Spiraea filipendula L. Lyn- 

 donville. June. C. E. Fairman. 



Phaeopezia fuscocarpa (E. & H.) Sacc. 

 Decaying wood. Kasoag, Oswego co. July. 



Pholiota aurivella Batsch 



Decaying wood of maple. Near Syracuse. October. F. B. 

 Wheeler. 



Phomopsis stewartii n. sp. 



Perithecia gregarious, commonly occupying grayish or brown 

 spots, thin, subcutaneous, at length erumpent, depressed, minute, 

 Yz-Yi mm broad, black ; spores of two kinds, first, filiform, curved, 

 flexuous or uncinate,' hyaline, 16-25 x 1-1.5 /^-, second, oblong or 

 subfusiform, hyaline, commonly binucleate, 8-12 x 2-3 /*; sporo- 

 phores slender, equal to or shorter than the spores. 



On stems of Cosmos b i p i n n a t u s Cav. Garden of Agri- 

 cultural Experiment Station, Geneva, Ontario co. October. F. C. 

 Stewart. 



Perithecia gregaria, maculas griseas seu brunneas vulgo occu- 

 pantia, tenua, subcutanea, deinde erumpentia, depressa, minuta, 

 yz-y2 mm lata, nigra; sporae dimorphae, primum, filiformes, cur- 



