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332 aYNGENESIA SUPERFLUA 



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date; and supported by petioles six inches long; stem leaves two to four in- 

 ches long; deeply pinnatifid, with the terminal segment ovate, and irregularly 

 notched. Involucrum as in most of our species appearing to be one-leaved, 

 deeply divided with one or two small scales at base, the segments or leaflets 

 subulate, florets of the ray yellow, larger than those ofS. Aureus. Seed 

 oblong, striate. Pappus setaceous, very white, and very abundant, so that 

 the heads when the seeds are mature, resemble small balls of cotton. 



Sent me under this name from Salem, North-Carolina. I have speci- 

 mens from the middle country of South-Carolina, which, though wanting 

 root leaves, appear to belong to this species. 



Flowers. 



8. LoBATUs. Persooii 



S. glaber; foliis pin- [ Glabrous; leaves piii- 

 natifido-lyratis; Jobis natilid, lyrate, lobes 

 rotund atissubrepandis; round and slightly re- 

 corymbo composito,pe- pand; corymb com- 

 dunculis summis sub- pound, the highest pe- 



umbellatis. duncles somewhat urn- 



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bellale. 



Persoon, 2. p. 436- Nutt, 2. p. l65. 

 S. Lyratus. Mich* 2, p. 120» 



Annual. Stem erect, one to three feet high, angled, glabrous, fistulous, suc- 

 culent, with the epidermis adhering only at the angles. Leaye^ sessile, pm- 

 natifid, with the lobes spathulate and round, coarsely toothed, glabrous. 

 Flowers in a large panicle, composed of many small umbels. Involucrwn 

 with one or two small scales at base, the leaflets linear, acute, succulent; 

 florets of the ray about twelve, yellow, the ligules lanceolate, sometimes obo- 

 vate, three toothed at the summit; the florets of the disk membranaceous. 

 Stamens as long as tlie florets of the disk. Style a little longer than the sta- 

 mens, two-cleft at the summit. Stigmas nearly globular. Seed oblong, stri- 

 ate. Pappus setaceous, very white. Receptacle naked. ^ , 



Grows in damp soils, not absolutely inundated; rice fields when in good 

 order are literally covered with this weed in the spring of the year 

 tb the planters is generally known by the name of butter weed. 



Flowers Jcmuarv to Mav and sometimes in October. 



, which 



ARNICA. Gen. Pl. 1296. 



Involucrum foliolis [ Involucrum with the 

 ^qiialibws. Corollulce leaflets equal Florets 

 radii saepius filamentis | of the ray often with 



