Adams : Infection of Crataegus by Gymnosporangium 49 



Through the kindness of Dr. J. C. Arthur I have secured the 

 data regarding a collection which was not reported in North 

 American Flora, but was collected previous to our collection at 

 Mussers Gap, Center Co., Pennsylvania. The collection is in the 

 exsiccati of Ellis, North American Fungi 1084, as Gymnosporang- 

 ium germinale on Crataegus coccinea collected in West Chester, 

 Pennsylvania. 



Gymnosporangium germinale (Schw.) Kern 



on 



Crataegus ■ coccinea^ L. 



Crataegus pausiaca 1 Ashe. 

 Crataegus pruinosa 1 (Wendl.) Beadle. 

 Crataegus punctata 2 Jacq. 

 Crataegus str amine a 1 Beadle. 

 Crataegus succulenta^- Schrad. 



Crataegus coccinioides 1 Ashe. 

 Crataegus Jesupi 1 Sarg. 



Crataegus macrospermaX Ashe, 



Crataegus Margaretta^ Ashe. 

 Crataegus neofluvialisi Ashe. 



Gymnosporangium globosum Farlow 



on 



Crataegus Calpodendron^ Borckh. 

 Crataegus coccinea' 2 ' L. 

 Crataegus coccinioides 2 Ashe. 



Crataegus pruinosa 2 (Wendl.) Beadle. 



Crataegus Margaretta 2 Ashe. 

 Crataegus neofluvialisi Ashe 



Crataegus Crus-galli 2 L. 

 Crataegus Jusupi*- Sarg. 



Crataegus stramineai Beadle. 

 Crataegus succulenta 1 Schrad 



Crataegus macrosperma 1 Ashe. 



Gymnosporangium Juniperi-virginianae Schw. 



on 



Malus glaucescens 2 Rehder. 



State College, 

 Pennsylvania. 



1 Species not previously reported in North American Flora. 



2 Species not previously reported from Pennsylvania. 



