20.
Coreopsis grandiflora
Hogg ex Sweet, Brit. Fl. Gard. 2: plate 175. 1826.
Coreopsis grandiflora
var.
harveyana
(A. Gray) Sherff;
C. grandiflora
var.
longipes
(Hooker) Torrey & A. Gray;
C. grandiflora
var.
saxicola
(Alexander) E. B. Smith;
C. saxicola
Alexander
Perennials,
40—60+ cm.
Aerial nodes
proximal to first peduncle usually 6—10+, distalmost 1—3 internodes 4—7+ cm.
Leaves:
mostly cauline on proximal
2
/3—
7
/8 of plant heights; petioles 0 or 10—35+ mm; blades usually 1(—2)-irregularly pinnately or ± pedately lobed with (3—)5—9+ lobes, rarely simple, simple blades or terminal lobes narrowly lanceolate to linear or filiform, 15—45(—90+) × (0.5—)2—8(—12+) mm.
Peduncles
8—15(—25+) cm.
Calyculi
of lanceolate to linear bractlets 3.5—9+ mm.
Phyllaries
lance-ovate, 7—9(—12) mm.
Ray laminae
yellow, 12—25+ mm.
Disc corollas
3.3—4.8 mm, apices yellow.
Cypselae
2—3+ mm, wings spreading, ± chartaceous, entire or irregularly toothed to pectinate.
2
n
= 26 (+ 0—2B).
Flowering May—Aug. Sandy soils, ditches and roadsides, other disturbed sites, granite and sandstone outcrops; 30—300+ m; Ont., Que.; Ala., Ark., Conn., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mich., Miss., Mo., N.J., N.Mex., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., Wis.
Coreopsis grandiflora
var.
inclinata
J. R. Allison from glades in Alabama may merit recognition.
