Coreopsis tinctoria
Coreopsis lanceolata
atkinson's coreopsis, calliopsis, Columbia coreopsis, coreopsis, golden tick-seed, plains coreopsis
garden coreopsis, lance-leaf coreopsis, lance-leaf tick-seed, lanced-leaf coreopsis, sand coreopsis
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 on proximal 1/4–1/3(–1/2) of plant heights;
petioles 1–5(–8+) cm;
blades simple or with 1–2+ lateral lobes, simple blades or terminal lobes lance-ovate or lanceolate to oblanceolate or lance-linear, 5–12 cm × 8–15(–18+) mm.
1–5(–15+) cm.
(8–)12–20(–35+) cm.
usually yellow with red-brown blotch, sometimes red-brown in proximal 1/3–9/10 and distally yellow, rarely yellow throughout, 12–18+ mm.
yellow, 15–30+ mm.
2.5–3+ mm.
6–7.5 mm, apices yellow.
± lance-oblong to lance-ovate, 4–7(–9) mm.
deltate to lance-deltate, 8–12+ mm.
of deltate-lanceolate bractlets 1–3+ mm.
of lance-ovate to lance-linear or linear bractlets 4–8(–12) mm.
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.
(2.6–)3–4 mm, wings ± spreading, ± chartaceous, entire.
nodes proximal to first peduncle usually 1–3(–5+), distalmost 1–3 internodes 1–2(–8+) cm.
= 24 (+ 0–2 Bs).
= 26 (+ 0–4B).
Coreopsis tinctoria
Coreopsis lanceolata
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.)
Plants that have been called Coreopsis lanceolata var. villosa Michaux often have 5+ aerial internodes 6+ cm long proximal to the first peduncle; they may merit recognition as a distinct taxon or may be hybrids (or derivatives) from crosses between C. lanceolata and C. pubescens.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
Go Botany, 
IL Wildflowers, 
KS Wildflowers, 
LA Plants, 
MD Biodiversity, 
MI Flora, 
MN Wildflowers, 
MO Plants, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
- Local floras: BC, CA, OR, WA
- Local Web sites: CalFlora, CalPhotos, Flora NW, Go Botany, IL Wildflowers, KS Wildflowers, LA Plants, MD Biodiversity, MI Flora, MO Plants, PNW Herbaria
- WildflowerSearch
- iNaturalist (observations)
- USDA Plants Database
- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
