192 DICOTYLEDONOUS PLANTS. 



HAB. Sandy woods. N. J. to Car. Aug. Oct. Z. Stem 2 

 feet high, very smooth and glaucous. Racemes not very com- 

 pact, sometimes slightly recurved. Leaves sometimes scabrous 

 on the margin, finely and acutely serrate. 



26. & hispida Wtild. : stem erect, hispid, scabrous ; leaves lanceo- 

 late, scabrous, entire ; radical ones serrate ; racemes erect ; rays mid- 

 dle-sized. 



HAB. Fields and woods. N. J. to Virg. Oct. It. Resembles 

 & c&sia. 



27. & lithospermifolia IVilld. : stem branched, pubescent ; leaves 

 lanceolate, scabrous on both sides, .attenuate, 3-nerved, very entire ; 

 racemes erect ; rays elongated. 



HAB. Sandy woods. N. J. to Car. Aug. Oct. H. Pursh." 



28. S. lavigata Alt. : stem erect, smooth ; leaves lanceolate, fleshy, 

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

 villeus ; rays elongated. 



HAB. Salt marshes. Can. to Virg. Sept., Oct. U.Stem 

 45 feet high. Radical leaves somewhat ovate. Rays about 10. 



29. S. vlminea Ait. : stem erect, subpubescent ; leaves linear-lance- 

 olate, membranaceous, attenuate at base, smooth, scabrous on the mar- 

 gin ; lower ones slightly serrate ; racemes erect ; rays elongated. 



HAB. Banks of streams. Can. to Virg, Aug. Oct. 21. 



30. <>. Hinunij'aiui Pers. : stem oblique, smooth ; leaves lanceolate, 

 somewhat fleshy, entire, smooth on both sides ; racemes panicled, 

 erect ; peduncles scaly, smooth ; rays long.- S. mexicana WMd. 

 Pursh. 



HAB. Salt marshes. N. S. S. to Car. Aug. Oct. U- Stem3 5 

 feet high, generally purple, Leaves sessile, lower ones very 

 large. Racemes generally erect, rarely recurved. Flowers large. 



31. S. macropkylla Pursh: lower leaves ovate, acuminate, attenuate, 

 unequally and acutely serrate, smooth ; cauline ones lanceolate, atten- 

 uate at each end, nearly sessile, serrate ; racemes axillary, peduncu- 

 late, leafy, as long as the leaves ; involucre oblong, turgid, many-flow- 

 ered ; rays somewhat elongated. 



HAB. Woods, near White mountains. Big. Can. Pursh. Aug. 

 If.. Stem 3 feet high. Flowers yellow, in short axillary ra- 

 cemes. This plant, which is described by Pursh, from a speci- 

 men in the Banksian Herbarium, he thinks intermediate between 

 this genus and dster. According to Dr. Bigelow it has broader 

 leaves than any other species, sometimes rough beneath. 



32. & flcxicaulis Linn. : stem flexuous, smooth, angled ; leaves ovate, 

 acuminate, serrate, smooth; racemes erect, axillary ; rays middle-sized. 

 and S. latifolia Muhl. 



HAB. Woods. Can. to Car. Aug. Oct. It. Stem 23 feet 

 high, slender and flexuous. Racemes scattered, as long as the 

 stem, small, axillary, erect. 



