SYNGENESIA.— SUPERFLUA. 305 



HAB. Low grounds. Sept. U . 



34. 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. U. Stem tall ; 

 leaves rigid ; Jl. very large, 



35. S. noveboracensis : radical leaves ovate oblong, 

 petiolate ; stem somewhat naked, fastigiately 

 branched. 



HAB. Meadows. Sept. U. Stem 3 ft. high, 

 thick ; leav. rough ; Jl. large. 

 Vq. S. squarros-a : stem thick, pubescent above ; leaves 

 smooth ; lower ones very broad, spathulate-oval, 

 serrate, acute ; upper ones lanceolate-elliptic ; 

 racemes glomerate, rigid, and pubescent ; calyx 

 squarrose, many-flowered ; rays 10 — 12, elongate. 

 HAB. Rocky hills. Sept. U . Stem 2 ft. high ; 

 Jl. very large. 



489. ARNICA. Composites. 



A. nudicaulis: hairy; radical leaves decussate and op-* 

 posite, oblong-oval, subdentate ; stem nearly leaf- 

 less, divided at the summit into several 1-flowered 

 branches. 

 HAB. Woods. June. U. Stem 1—2 ft. high ; 

 leav. large, rough beneath; Jl. large, yellow. 



490, SENECIO. Groundsel. Composites. 



* Florets oj the rays wanting. 



S. hieracifolius : stem virgate, paniculate ; leaves 

 oblong, amplexicaul, unequally and deeply tooth- 

 ed ; dentures acute ; calyx smooth ; seeds hairy. 

 HAB. Fields, &c. Aug.— Oct. © . Stem 2—3/*. 

 high, subscab. ; calyx veniric, large ; Jl. wh. 

 ?\ S. vulgaris : leaves mostly amplexicaul, sinuate- 

 pinnatitid, toothed; stem paniculate, erect, angular. 

 HAB. Waste grounds. Aug. ©. Stem 18 in, 

 high ; leav. thin ; Jl. pale yell. §. 

 - ^ . elongatui : radical leaves spathulate, attenuate 

 C c2 



