Bwckciohidm] SYNGENESIA 



485 



eeptacle chaffy, the chaff linear-oblong, acuminate, striate, pubescent at summit, 



conduplicatc and embracing the florets. 



JIab. Borders of woods, and thickets: frequent. Fl. July— August. Fr. Sept. 



Obs. This I believe to be the H. divaricatus of the American Botanists, gener- 

 ally ; but if it be the plant intended by Elliott and Becky they have made a palpable 

 mistake in speaking of the petioles. The leaves are constantly sessile, or on very 

 ahort petioles. I received small specimens of it, from Mr. Schweinitz, under the 

 name of H. truncatus. 



2. H. froxdosus, L. Stem smooth below; leaves lance-ovate, acu- 

 minate, serrate, thin and slightly scabrous, abruptly contracted to a 

 petiole at base ; peduncles scabrous; involucre squarrose, frondose, the 

 leaflets undulate, ciliate ; rays about 8. JBeck, Bot. p. 202. 

 Froxdose, or Foltaceous Helianthus. 



Root perennial. Stei?i3 to 8 font high, rather slender, somewhat angular, striate, 

 smooth below, with alternate axillary scabrous branches at summit. Leaves 3 to 

 f, inches long, and 1 to 3 inches wide, lance-ovate, or ovate-oblong, acuminate, 

 rather remotely but sharply and sometimes coarsely serrate, 3-nerved, thinnish, 

 sparingly sprinkled and roughish with short hairs on both sides, scabrous-ciliate 

 on the margin, abruptly and cuneately tapering at base to a petiole half an inch 

 to near 2 inches in length,* the upper leaves mostly alternate. Heads of flowers 

 rather small ; peduncles sulcate-angled, scabrous-pubescent, slender ; leaflets of 

 the involucre lance-linear, acute, ciliate, long, loose, foliaceous, sometimes undu- 

 late, reflexed, or laterally curved ; rays about 8, palish or sulphur-yellow, oblong, 

 about an inch in length, and 1 third of an inch wide. Akenes compressed, obo- 

 vate*oblong, striate, smooth ; pappus consisting of 2 opposite unequal subulate 

 pubescent chaffy scales. Receptacle chaffy, the chaff resembling that of the pre- 

 ceding species. 



Hab> Alon? the Brandywine: frequent* Fl. August— Sept. Fr. October. 



Obs. This appears, by the description, to come very near Mr. EllioWs H. tin- 

 ui/olius. 



3. H. dec apetalcs, L P Leaves ovate-lanceolate, acuminate, remotely 

 serrate, scabrous above, softly pubescent and somewhat glaucous beneath, 

 on short petioles ; leaflets of the involucre ovate-lanceolate, acuminate, 

 nearly equal, ciliate ; rays mostly 10. Beck? Bot. p. 203. 



H. mollis. Florul. Cestr. p. 92. Not ? of the Authors here cited. 



Tex-petaled Helianthus. 



Root perennial. Stem 2 to 4 feet high, rather slender, striate, smooth below, 

 roughish-pubescent and somewhat branched at summit. Leaves 3 to 6 or 8 inches 

 long, and 3 fourths of an inch to 2 inches wide, varying from ovate to lanceolate, 

 acute, or acuminate, 3-nerved, more or less serrate, sometimes obscurely so, green 

 and scabrous on the upper surface, cinereous or glaucous beneath, and clothed 

 with a short softish hoary pubescence, abruptly contracted at base to a petiole 

 which is 1 third to 3 fourths of an inch in length, and more or less ciliate,— the 

 upper leaves sometimes, but rarely, alternate. Heads of flowers middle-sized ; 

 peduncles striate-sulcate, scabrous-pubescent ; leaflets of the involucre ovate-lan- 

 ceolate, acuminate, nearly equal in length, imbricated, more or less pubescent, 

 sometimes hirsute, conspicuously ciliate on the margin; rays about 10, yellow, 

 with longitudinal orange-colored veins, an inch to an inch and half long, and 1 

 third to near half an inch wide, lance-oblong, slightly pubescent beneath. Akenes 

 •ubcomprcssed, obovate, striate, variegated, hairy at summit ; pappus consisting 



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