Coreopsis rosea
Coreopsis tinctoria
pink tick-seed
atkinson's coreopsis, calliopsis, Columbia coreopsis, coreopsis, golden tick-seed, plains coreopsis
mostly cauline; opposite;
petioles 0–1 mm, ciliate or not;
blades lance-linear to linear or filiform, 20–45(–60) × 1–2(–3+) mm, rarely with 1–2 lateral lobes.
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.
2–4(–6+) cm.
1–5(–15+) cm.
pinkish to white, 9–15+ mm.
usually yellow with red-brown blotch, sometimes red-brown in proximal 1/3–9/10 and distally yellow, rarely yellow throughout, 12–18+ mm.
40–60+;
corollas ochroleucous to yellow, 2.5–3 mm.
2.5–3+ mm.
deltate-ovate, 4.5–5.5 mm.
± lance-oblong to lance-ovate, 4–7(–9) mm.
of oblong to linear bractlets 1.5–2+ mm.
of deltate-lanceolate bractlets 1–3+ mm.
narrowly oblong, 1.3–1.8 mm, not winged;
pappi 0.
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.
(± mid stem) 1–4(–5+) cm.
= 26.
= 24 (+ 0–2 Bs).
Coreopsis rosea
Coreopsis tinctoria
Occurrence of Coreopsis rosea in South Carolina may represent a human-mediated disjunction; the collection came from a “lime sink” near a trailer park close to a freeway.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
- 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
