SYNGENESIA SUPERFLUA. SenCcio. 529 



2. S. caule virgato-paniculato, foliis amplexicaulibns ob- hieracifoUus. 



longis aculis inaequaliter acuteque profunde dentatis, 

 calycibus \xv\bus.— m//d.sp. pi. 3, p. 1974. 



Icon/ Pluk. phyt. t. Wl.f. 1. mala. 



On road sides and in newly cleared grounds : Canada to 

 Carolina. ©. July, Aug. v. v. From two to five 

 feet high. This is one of the plants which spring up 

 in the most remote western countries, when the land 

 is cleared of timber, particularly when the brush- 

 wood is burnt on the ground j from which circumstance 

 it is generally known by the name of Fire-weed. I 

 have frequently found it covering a square piece of 

 cleared land, when there was not a single plant to be 

 found in any other place for a considerable distance 

 round it. 



3. S. glaber; foliis radicalibus spathulatis serratis in petio- 



lum attenuatis, cauiinis pinnatifidis dentatis remotis- 

 sirais, pedunculis elongatis umbellato-corymbosis. 

 On rocks, near the banks of rivers : about Easton, Pen- 

 syjvania. 1/. July, Aug. v. v. Resembling No. 8, 

 but is destitute of a ray. 



4. S. glaber ; foliis radicalibus longe petiolatis ovato-sub- 



rotundis subcordatis dentatis, cauiinis 2. remotis pin- 

 natifidis dentatis, pedunculis brevibus sobternis um- 

 bellatis. 



S. tussilaginoides. JValt.Ji. car. 208 ? 



In Labrador. Colmasier. In Carolina. Waller. %. 

 V. s. in Herb. Dickson. Not above a spa-n high. 



** Florihis radinlis. 



5. S. caule simplicissimo rigide erecto subnudo, foliis om- pauperculus. 



nibus lanccolatis, radicalibus subintegris inciso-denta- 

 tisque, corymbo paucitloro, calycibus glabellis, radiis 

 parvulis. — iMich.Ji. amer. 2. p. 120. 

 About lakes : Canada. Michaux. +. A small plant j 

 flowers the size of S. Jacolcea. 



6. S. foliis radicalibus longissime petiolatis orbiculatis sub- gracilis. 



cordatis crenatis, cauiinis paucis remotissimis lineari- 

 oblongis basi dilatatis inciso-dentatis, pedunculis bre- 

 vissimis hirsutis subumbellalis, calycibus glabellis, 

 radils paucis brevisslmis. 



S, strictus. Herb. Banks. 7nss. 



On the rocky banks of rivers 3 Pensylvania. "}/. May 

 —Aug. V. V. ; 



elonsatus. 



paucijlorus. 



V. s. in Herb. Banks. About a foot 



