m ««a SYNGENESIA 497 



fe»ll te at the summit of the stem, somewhat lanuginous. Leaves alternate, 

 ln _the radical ones 1 to 3 inches long, and 3 fourths of an inch to near 2 

 half inches wide, ovale, more or less cordate at base, thinnish, crenate- 

 Srate the serratures slightly mucronate, petioles 1 or 2 to 6 or 8 inches long, 

 tern-leaves 1 to 3 inches long, sessile, amplexicaul, deeply pinnatifid, the seg- 

 cnts incised-dentate. Heads of flowers middle-sized, terminal on the corymbose 

 Tranches; branches resembling peduncles, the upper ones subumbcllate, some- 

 what lanuginous, and sparsely bracteate, a little thickened near the involucre; 

 'nvolucre lanusinous at base, the leaflets narrow, linear, acute, smooth, purplish 

 x j n a single scries, with 2 or 3 small bract-like leaflets at base ; rays and 

 di k yellow ; branches of the style truncate, those of the disk-florets with a pen- 

 * il-like pubescence at the end. Akenes linear, prominently 6triate-ribhed, smooth, 

 of a pale straw-color ; pappus capillary, scabrous, white, as long a6 the disk-florajta, 

 alike on all the akenes. Receptacle flat, naked, roughish-scrobiculate. 

 Hub. Banks of streams ; meadows, & woodlands: frequent. Fl. May-June. Fr. Jaly. 

 Obs. Mr. Nuttall thinks the S. Cymbalaria, of Pursh, may be only a starved 

 variety of this; and I have specimens, with the radical leaves 6ut>lyrate, the 

 terminal segment rounded, and truncate at base, which tend to confirm that 

 opinion. 



2. S. obovatub, Jlfuhl. Radical leaves obovate, crenatc, pctiolate, 

 caulinc ones oblong, pinnatifid, sessile ; corymb nearly simple, subum- 

 bcllatc; peduncles scarcely thickened at summit. Beck, Bat. p. 200. 

 Obovate Skxfxio. 



Root perennial. Stem 9 to 15 inches high, striate, smoothish, corymbosely 

 branched at summit. Leaves alternate, smooth,— the radical ones 1 to near S 

 inches long, and 3 fourths of an inch to an inch and half wide, varying from 

 roundish-obovatc to spatulate, crenate, somewhat fleshy (when dry thickish and 

 subcoriaceous), often purplish, narrowed more or lees abruptly at base to a taper- 

 ing margined petiole half an inch to 2 inches in length ; stem-leaves 1 to 3 or 4 

 inches long, oblong, mostly obtuse, pinnatifid and dentate,— those near the base 

 of the stem mostly spatulatc-oblong, and crenately incised. Heads of flowers 

 rather small, terminal on the corymbose peduncle-like branches ; branches 

 slender, scarcely thickened at the involucre, lanuginous at base, sparingly brac- 

 teate, the upper ones crowded or subumbeliate ; involucre smoothish, the leaflets 

 hnce-linear, acute, with 1 or 2 minute subulate bracts at base; rays and disk 

 yellow. Akenes linear-oblong, striate, smooth ; pappus capillary, white. 



Hob. Along Schuylkill; Black Rock: not common. Fl. April— May. /V.June. 

 Obs. Collected at the above locality, in 1830, by D. Townsend, Esq. An agri. 

 Cultural writer, in New York, denounces the plant— under the name of "Squaw- 

 veed"— is poisonous to sheep; but I have no knowledge of its properties. 



3. S. Balsamitae, Jlfuhl. Radical leaves oblong-lanceolate, crenatp- 

 dentatc, on long petioles, cauline ones lance-oblong, pinnatifid, sessile ; 

 corymb compound, subumbellate. Beck, Bot. p. 200. (excluding the 

 Synonym of MxJ) 



Balsamita-ltk* Skxkcto. Vitlgo— Groundsel. 



Jloot perennial. Stem 1 to 2 feet high, striate, sligh ly lanuginous, more denselv 

 •o at base, subsimplc, corymbose at summit. Leaves alternate, more or less 

 pubescent,-the radical ones 1 to 3 inches long, and I third to 3 fourths of an Inch 

 wide, varying from elliptic to oblong-lanceolate, rather obtuse, crenately serrate- 

 ieatate, narrowed at base to a slender pubescent petiole 1 or 2 to 6 inches Ion* ; 



42* 



