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Coreopsis tinctoria

atkinson's coreopsis, calliopsis, Columbia coreopsis, coreopsis, golden tick-seed, plains coreopsis

Georgia tickseed

Habit Annuals, (10–)30–70(–150+) cm. Perennials, 40–60(–100+) cm.
Leaves

proximal blades usually 1(–3)-pinnate, terminal lobes lance-ovate to oblanceolate, 10–60 × 5–25 mm;

cauline blades usually 1–2(–3)-pinnate, rarely simple, simple blades or terminal lobes lance-linear to linear or filiform, 10–45 × 0.5–2(–5+) mm.

basal and cauline; alternate;

petioles ± terete, 5–30+ cm × 0.5–2+ mm, not ciliate;

blades none.

Peduncles

1–5(–15+) cm.

4–8+ cm.

Ray laminae

usually yellow with red-brown blotch, sometimes red-brown in proximal 1/3–9/10 and distally yellow, rarely yellow throughout, 12–18+ mm.

purplish to pinkish, 12–20(–30+) mm.

Disc florets/Disc corollas

2.5–3+ mm.

60–120+;

corollas ochroleucous to yellow, 3.5–4.5 mm.

Phyllaries

± lance-oblong to lance-ovate, 4–7(–9) mm.

lance-ovate, 7–8 mm.

Calyculi

of deltate-lanceolate bractlets 1–3+ mm.

of lance-deltate to lance-ovate bractlets 2–5 mm.

Cypselae

1.5–3(–4+) mm, wings 0 or 0.1–0.7+ mm wide;

pappi 0, or of 1–2 cusps or subulate scales 0.1–1+ mm.

narrowly oblong to linear, 2.5–3+ mm, winged, wings ± pectinate, 0.2–0.4+ mm wide;

pappi of 2 subulate scales 1–1.5 mm.

Internodes

(± mid stem) 5–25 cm.

2n

= 24 (+ 0–2 Bs).

= 26.

Coreopsis tinctoria

Coreopsis nudata

Phenology Flowering year round, mostly Jun–Aug. Flowering Apr–May.
Habitat Moist, sandy or clay soils, sometimes alkaline flats, prairies, ditches, disturbed places Ditches, pond margins, swamps, in pine barrens
Elevation (0–)20–1500(–2000) m ((0–)100–4900(–6600) ft) 0–50+ m (0–200+ ft)
Distribution
from FNA
AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; VA; VT; WA; WI; WV; WY; AB; BC; MB; ON; QC; SK; Mexico (Coahuila, Nuevo León, Tamaulipas)
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; FL; GA; LA; MS
[WildflowerSearch map]
[BONAP county map]
Discussion

Coreopsis tinctoria is widely grown in public and residential gardens, and commercially (for cut flowers), and has become widely established in the flora area.

As here circumscribed, Coreopsis tinctoria includes plants that others (without agreement among themselves) have treated as distinct species or infraspecific taxa: C. atkinsoniana (plants mostly 50–150+ cm, seldom branched from bases; cypselae 2.5–3 mm, “narrowly” winged; pappi 0.1–0.2 mm; mostly Idaho, Montana, Oregon, Washington), C. cardaminefolia (plants mostly 20–50 cm, seldom branched at bases; cypselae 2 mm, “narrowly to widely” winged; pappi 0 or 0.1–0.2 mm; mostly Arkansas, Kansas, Louisiana, Nebraska, Oklahoma, Texas), and C. tinctoria var. similis (plants mostly 10–30 cm, usually branched from bases; cypselae 2–3 mm, “widely” winged; pappi 0.2–1 mm; Texas and Mexico).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 21, p. 197. FNA vol. 21, p. 196.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Calliopsis Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Eublepharis
Sibling taxa
C. auriculata, C. basalis, C. bigelovii, C. californica, C. calliopsidea, C. delphiniifolia, C. douglasii, C. gigantea, C. gladiata, C. grandiflora, C. hamiltonii, C. integrifolia, C. intermedia, C. lanceolata, C. latifolia, C. leavenworthii, C. major, C. maritima, C. nudata, C. nuecensis, C. palmata, C. pubescens, C. pulchra, C. rosea, C. stillmanii, C. tripteris, C. verticillata
C. auriculata, C. basalis, C. bigelovii, C. californica, C. calliopsidea, C. delphiniifolia, C. douglasii, C. gigantea, C. gladiata, C. grandiflora, C. hamiltonii, C. integrifolia, C. intermedia, C. lanceolata, C. latifolia, C. leavenworthii, C. major, C. maritima, C. nuecensis, C. palmata, C. pubescens, C. pulchra, C. rosea, C. stillmanii, C. tinctoria, C. tripteris, C. verticillata
Synonyms C. atkinsoniana, C. cardaminefolia, C. tinctoria var. atkinsoniana, C. tinctoria var. similis
Name authority Nuttall: J. Acad. Nat. Sci. Philadelphia 2: 114. (1821) Nuttall: Gen. N. Amer. Pl. 2: 180. (1818)
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