6.
Verbesina helianthoides
Michaux, Fl. Bor.-Amer. 2: 135. 1803.
Plants
60—120+ cm (perennating bases ± erect or horizontal rhizomes, internodes winged).
Leaves
all or mostly alternate (proximal sometimes opposite); blades ± lance-ovate to lanceolate, 5—12+ × 2—5+ cm, bases ± cuneate, margins ± toothed, apices acute to attenuate, faces strigose to sericeous.
Heads
2—5(—10+) in ± corymbiform arrays.
Involucres
± hemispheric, 10—15+ mm diam.
Phyllaries
16—21+ in 2—3 series, ± erect, lanceolate, 6—9+ mm.
Ray florets
8—13+; laminae 20—25(—30+) mm.
Disc florets
40—80+; corollas yellow.
Cypselae
dark brown to black, oblanceolate to elliptic, 5 mm, faces strigillose to glabrate;
pappi
0.5—1.5 mm.
2
n
= 34.
Flowering May—Jul. Moist places in sandy, pine woodlands, post-oak woodlands, disturbed places; 70—500 m; Ala., Ark., Ga., Ill., Ind., Iowa, Kans., Ky., La., Miss., Mo., N.C., Ohio, Okla., Tenn., Tex.
Verbesina helianthoides
may be no longer present in Georgia.
