Excluded Species 1099 



640. Erigeron vernus (L.) T. & G. Reported from Monroe County by 

 Andrews. This is a marsh plant of the southeastern part of the United 

 States, and no doubt the report should be referred to some other species. 



Va. to Fla. and La. 



641. Pluchea camphorata (L.) DC. Reports for this species should 

 be referred to Pluchea petiolata Cass. 



Salt marshes along the Atlantic coast from Mass. to Fla. and along the 

 Gulf to Tex. and Mex. 



642. Pluchea foetida (L.) DC. Reports for this species also should be 

 referred to Pluchea petiolata Cass. 



Swamps along the Atlantic coast from N. J. to Fla., and along the 

 Gulf to Tex. Mainly near the coast. 



643. Antennaria occidentals Greene. I reported this species from 

 Cass County but I am now referring my specimen to another species. 

 Greene referred to this species a specimen collected in Lake County by 

 Moffatt which is now in the National Herbarium. I have not seen it. Lyon 

 and Peattie both report it but I have not seen their specimens. Fernald 

 (Rhodora 38: 229. 1936) gives the range of this species to the west of 

 Indiana. 



644. Antennaria Wilsonii Greene. This species was described by 

 Greene from a specimen collected by Wilson near Cold Creek in Hamilton 

 County in June, 1911. I have not seen the specimen. From the descrip- 

 tion, I believe it to be a form of Antennaria neglecta Greene. 



645. Silphium Asteriscus var. laevicaule DC. This form was re- 

 ported from Montgomery County by Grimes. I have seen the specimen and 

 I am referring it to the alternate-leaf form of Silphium integri folium. The 

 range of this species as now known is to the south of our area. 



646. Silphium terebinthinaceum var. pinnatifidum (Ell.) Gray. This 

 variety has been reported from Hamilton County and by Peattie from 

 the dune area. Doubtless these reports should be referred to Silphium 

 laciniatum. This seems to be a drastic disposal of these reports but once I 

 investigated the report of a botanist of this variety and found it was the 

 last named species. 



Ohio, Tenn., and Ala. 



647. Xanthium americanum Walt. The synonomy of the species of 

 Xanthium is so involved that the application of names to forms is extremely 

 uncertain. In the absence of specimens of this species and the following 

 excluded ones, it is impossible to say to which of our two native species 

 they belong. 



648. Xanthium canadense Mill. This species has been reported from 10 

 counties and is referred to one of our native species. 



649. Xanthium commune Britt. This species is referred as in the 

 preceding. 



