65 



a trip to the summit of Clove Mountain. Another day was oc- 

 cupied in a trip from Clove Branch to Brinckerhoff Station ; this 

 gave us two new ones, Crics-galli and lobtdata. 



Although the flowering time is the best for finding Crataegus, 

 the autumn, when they are in mature fruit, is the best time to 

 distinguish the forms, for in the mature fruits one can find the 

 most critical points of difference. 



In the autumn there was less time at my disposal than in the 

 spring. On September 30, I went to Dykeman's and the next 

 day to Pawling and Coleman's ; the latter place was of particular 

 interest, being very strong in the Intricatae of which Boyntoni is 

 a member. 



October 8 I went over most of my territory about Moore's 

 Mills ; the previous week Dr. Curtis had covered the part that I 

 did not. Here is another fine station for Intricatae, but the form 

 that interested me most was one Dr. Curtis found in 1904, this 

 proving to be deltoides Ashe, found before by Dr. C. D. Fretz at 

 Sellersville, Pa., only two trees ; we found three stations. 



The following list of thorns of Dutchess Co. includes also a 

 i&\N stations of interest south to New York. 



Crus-galli 

 Crataes^its Crus-s'alli D. 



Brinckerhoff; Mt. Vernon, Harlem River, Woodmere, L. I., 

 Bit knell. 



PUNCTATAE 



Crataegus punctata Jacq. 



Moore's Mills, Clove Branch. 



Pruinosae 

 Crataegus albicans Ashe. (C. dissona Sarg.) 



Moore's Mills, Coleman's ; Dykeman's, Putnam Co. 

 Crataegus arcana Beadle. 



Moore's Mills. 

 Crataegus cognata Sarg. 



Dykeman's, Putnam Co. 

 Crataegus deltoides Ashe. 



Moore's Mills. 



