20 



NEW YORK STATE MUSEUM 





TENUIFOLIAE 



Crataegus 



bella 6-, 



C. 



boothiana .S'. 



C. 



claytoniana S. 



C. 



conferta S. 



C. 



fucata 6'. 



C. 



gracilipes S. 



C. 



ignea 5". 



C. 



insignata S. 



C. 



leptopoda S. 



C. 



luminosa S. 



C. 



nescia S. 



C. 



recta .5". 



C. 



slavini S. 



c. 



spatifolia S. 



c. 



suavis S. 





MOLLES 



Crataegus 



radians S. 





FLABELLATAE 



Crataegus 



dayana S. 



C. 



gloriosa S. 



C. 



letchworthiana S. 



C. 



limosa i". 



C 



steubenensis S. 



Crataegus neobaxteri S. 

 C. puberis 5*. 



C. spissa S. 



C. verrucalis Pk. 



INTRICATAE 

 Crataegus cornellii 5". 





ANOMALAE 



Crataegus 



affinis ^. 



C. 



brachyloba S. 



C. 



floridula 5". 



c. 



inopinata S. 



c. 



repulsans S. 



c. 



simulans S. 



c. 



singularis S. 





TOMENTOSAE 



Crataegus 



admiranda S. 



C. 



calvini S. 



C. 



comans 6'. 



C. . 



efferata S. 



C. 



finitima 5. 



c. 



frutescens 5*. 



c. 



honeoensis S. 



c. 



spinifera 5. 



c. 



structilis Ashe 



c. 



venustula S. 



.. COCCINEAE 



Crataegus chateaugayensis 5". 

 C. harryi S. 



Cronartium ribicola Dietr. 



On living leaves of black currant, Ribes nigrum LJ 

 Agricultural Experiment station grounds. Geneva. September 26, 

 1906. F. C. Stewart. This is an injurious parasitic fungus which 

 has probably been recently introduced into this country. Its aecidial 

 form, Peridermium strobi, occurs on the trunk and 

 branches of white pine to which it is more injurious than thcj 

 Cronartium is to currant bushes. Fortunately this form hasl 

 not yet been detected in this country and it is possible that we may] 

 yet be free from it. 



Diaporthe parasitica Murr. 



Parasitic on the branches of chestnut trees to which it is injurious] 

 and eventually destructive. Various places in the vicinity of New 



