FLORA OF THE UPPER SUSQUEHANNA. 59 



GXAI'IIALIl'M I>. 



Q. obtuslfolium L. Ci h-wkli". Common Eveklastin(;. Plenti- 

 ful on dry hills and in old fields. Heads conical, with yellowish 

 flowers. The leaves are fragrant. Aug. ( G. polycephaluvi 

 Michx.) 



G. decurrens Ives. Everl.astinm;. Found with the preceding. 

 Not reported from the Chemung valley. May be distinguished 

 from the others by its decurrent leaves. Aug. 



G. uliginosum L. Low Cudwkkd. Common. Usually found 

 along roadsides where water has stood; also in other wet places. 

 Heads very small ; leaves fragrant. Aug. 



INULA L. 



I. Helenium L. Ei.iiCAMrANK. Common, especially in low 

 grounds and along roadsides. A well-known plant. The root 

 has the smell. of camphor. Aug. 



POLYMNIA L. 



P. Canadensis L. Leaf-cuf. Rare. South Mountain, Mills- 

 paugh. Apalachin, Fenno. Chemung Narrows, Lucy. She- 

 shecjuin, Pa., Graves. 



AMBROSIA L. 



A. trifida L. River Rag-weed. Great Rac-wekd. Three-lobed 

 Rac.-Weed. Abundant along streams, where its tall stems form 

 dense brakes. The so-called variety, integrifolia, which is 

 lower, with usually entire leaves, occurs occasionally with the 

 type. 



A. artemisisefolia L. Ra(;-wki:i). Roman Wormwood. Hog- 

 WEKD. Bitter-weed. Abundant in all waste places and many 

 cultivated grounds. Plants that are entirely pistillate are some- 

 times found. This plant has the reputation of being the cause 



of hay-fever. 



XANTHIUM L. 



X. strumarium L. Cockle-blr. Rare. Found about barn- 

 yards and pastures. Graves; Coville; Barbour. 



X. Canadense Mill. Clot-blr. Cockle-bur. Common along 

 roadsides, railways, river banks and other waste places. A 

 coarse weed that appears to be increasing in numbers. 



