

482 



SYNGENESIA [Sejteciomde* 



Coreopsis alternifolia. WillcL Sp. 3. p. 2257. Pen. Syn. 2. p % 478. 

 Ait. Kev> % 5. p. 136. Muhl. Catal. p. 79. 



Sq.uarrosk Actinomeris. 



Root perennial. Stem 3 to 6 or 8 feet high, rather slender, striate, roughish- 

 pube8cent, yellowish, with green wings decurrent from the leaves, corymbose- 

 paniculate at summit. Leaves 4 to 6 or 8 inches lone, and 3 fourths of an inch to 

 2 inches wide, alternate, lanceolate, acuminate, serrate, narrowed at base to a 

 tapering margined petiole which is decurrent on the stem, somewhat hairy and 

 rough, the margin and upper surface quite scabrous, with the short hairs dilated 

 and cinereous at base. Heads of (lowers rather small, in a terminal leafy corym. 

 boso panicle ; peduncles slender, striate, often densely pubescent ; involucre loose, 

 foliaceous, the leaflets lance-linear, or often spalulatc linear, with an inner series 

 of lance-ovate acuminate scales ; rays yellow, few (3 to 5 or 6), about an inch 

 long, oblanceolate, narrowed at base, almost unguiculale ; disk greenish-yellow, 

 subglobose, 1 third to half an inch in diameter. Akcnes much compressed, obo- 

 Tate, somewhat hairy, with each margin conspicuously winged, and a keel-liko 

 rib (sometimes 2 or 3) on each Hat side, crowned at summit by 2 subulate smooth- 

 ish diverging horns. Receptacle small, subglobose, chalTy, the chaff ovate-lance- 

 olate, acuminate, conduplicate, embracing one margin of the akenes. 



Hob. Moist grounds; along Pigeon creek : rare. Fl. August. Fr. Sept. 



Obs. This was collected the present year (183ft), at the above locality, on the 

 North side of this County, by IVIr. Josrph Hinehart. One or two additional spe- 

 cies are enumerated in the U. States. 



386. HELIANTHUS. L. Nutt. Gen. 689. 

 [Greek, Helios^ the sun, & Anthos, a flower ; from the resemblance of the flowers.] 



Involucre foliaceous, many-leaved, the leaflets imbricated, subsquar- 

 rose. Rays numerous. Akenes subcompresscd ; pappus mostly 2 

 unequal -chaffy scales (sometimes additional smaller ones), more or 

 legs deciduous. Receptacle mostly large, flat, with chaffy bracts* 



j" Leaves opposite. 



1. H, divaricatus, L. Stem smooth ; leaves lance-ovate, tapering 

 to the apex, rounded at base, 3-ncrved, scabrous, sessile ; panicle tri- 

 chotomous, slender, few-flowered ; involucre loose, the leaflets lance- 

 olate, acuminate, ciliate. Beck ? JBot. p. 202. 

 Also ? H. truncatus. EU* Sk. 2. p. 416. Eat. Man. p % 169. 



DXYAKIVAT* HKLlA.vriiLh. 



Root perennial. Stem 2 to 4 or 5 feet high, slender, terete, striate, smooth, or 

 sprinkled with hairs near the summit, sometimes purple and yet with a glaucous 

 tinge, di- or tri-chotomously branched above, often subsimplc. Leaves 3 to 5 or 

 6 inches long, and 3 fourths of an inch to 2 or 2 and a half inches wide, sessile or 

 •ubsessile, the base very obtuse, or rounded, and ovately dilated, acuminately 

 tapering to the apex, more or less serrate, scabrous above, rough ish-pubescent 

 and paler beneath, hirsute on the nerves. Heads of flowers small, few (often 3, 

 the central one dichotomal) ; peduncles scabrous ; leaflets of the involucre loose, 

 lanceolate with a slender acumination, scabrous and ciliate ; rays 6 to 10 or 12, 

 about 3 fourths of an inch long, yellow, with longitudinal orange-colored veins, 

 pubescent beneath ; disk yellow, the florets rather few, tubular, contracted at 

 AJtencs compressed, striate, smooth j pappus chaffy, subulate, ciliau. Rt- 



V* 



