418 SYNGENESIA SUPERFLTJA. 



Iy ovate, acuminate, deeply serrate, smooth, petioles winged ; racemes 



axillary. 

 HAB. Dry woods. Sept. Oct. Tj.; stem 18 in. high ; leaves 2 in. 



broad, atten. at base. 

 S. laevigata : stem erect, smooth ; leaves oblong-lanceolate, fleshy, 



very entire, very smooth ; racemes paniculate, erect ; peduncles sculy, 



villous ; rays elongate. 

 HAB. Salt marshes. Sept. Oct. Tj. ; stem 45 feet high ; rays 



about 10 ; radical leaves subobovate. 

 S. rigida : stem hairy and scabrous ; leaves ovate-oblong, rough, with 



minute hairs ; those of the stem very entire ; lower ones serrate ; 



flowering branches paniculate ; racemes compact ; rays elongate , 



scales of the calyx obtuse. 

 HAB. Rocky woods. Aug. Sept. Ij. ; stem tall ; leaves rigid , 



Jl. very large. 

 S. squarrosa : stem thick, pubescent above ; leaves smooth ; lower 



ones very broad, spathulate-oval, serrate, acute ; upper ones lanceo- 

 late-elliptic ; racemes glomerate, rigid, and pubescent ; calyx squar- 



rose, many-flowered ; rays 10 12, elongate. 

 HAB. Rocky hills. Sept. 1J. ; stem 2 feet high ; Jl. very large. 



345. SENECIO. Groundsel. 



* Florets of the rays wanting. 



S. hicracifolius : stem virgate, paniculate ; leaves oblong, amplexi- 



caul, unequally and deeply toothed ; dentures acute ; calyx smooth ; 



seeds hairy. 

 HAB. Fields, &c. Aug. Oct. <v> ; stem 23 feet high ; subscab. ; 



calyx ventric., large ; Jl. wh. 

 S. vulgaris : leaves mostly amplexicaul, sinuate-pinnatifid, toothed ; 



stem paniculate, erect, angular. 

 HAB. Waste grounds. Aug. (v) ; stem 18 in. high ; leaves thin ; 



Jl. pale yell.%. 



* * Flowers radiate. 



55. gracilis : radical leaves on very long petioles, orbicular, subcordate, 

 crenate ; stem-leaves few, very remote, linear-oblong, dilated at the 

 base, incisely dentate ; peduncles very short, hairy, subumbellate ; 

 calyx smooth ; rays few, very short. 



HAB. Rocky banks. May Aug. 7].; a foot high; Jl. small. 



S. aureus : radical leaves ovate, cordate, senate ; petiolate ; stem leaves 

 pinnatifid, dentate, terminal segment lanceolate ; peduncles subum- 

 bellate, thick. 



HAB. Rocky woods. May, 1\ ; stem 18 in. high ; limb. simp. ; Jl. 

 yell. 



S. baisamitce : radical leaves oblong, serrate, petiolate ; lower cauline 

 leaves lyrate-pinnatifid, serrate ; upper ones pinnate, dentate ; tlow- 

 ers somewhat umbellate ; stem and peduncles villous at the base. 



HAB. Meadows, &c. June, TJ. ; stem 1 2 feet high ; leaves sub- 

 pubes. ; JL. yellow. 



