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garden coreopsis, lance-leaf coreopsis, lance-leaf tick-seed, lanced-leaf coreopsis, sand coreopsis

Leavenworth's tickseed

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

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.

proximal blades usually 1(–2)-pinnate, terminal lobes ± elliptic or oblanceolate to lanceolate or linear, 15–30+ × 4–8(–12+) mm;

cauline blades simple or 1(–3)-pinnate, simple blades or terminal lobes narrowly oblanceolate to linear, 8–35(–70+) × 1–3(–5) mm.

Peduncles

(8–)12–20(–35+) cm.

2–5(–8) cm.

Ray laminae

yellow, 15–30+ mm.

usually yellow throughout, rarely with proximal red-brown blotch, 8–15+ mm.

Disc corollas

6–7.5 mm, apices yellow.

2.2–3.5 mm.

Phyllaries

deltate to lance-deltate, 8–12+ mm.

± lance-oblong to lanceolate, (4–)5–9 mm.

Calyculi

of lance-ovate to lance-linear or linear bractlets 4–8(–12) mm.

of deltate-ovate to oblong or linear bractlets 2–6+ mm.

Cypselae

(2.6–)3–4 mm, wings ± spreading, ± chartaceous, entire.

2–3 mm, wings 0.2–0.8+ mm wide;

pappi of 2 subulate scales (0.2–)0.4–1(–1.4+) mm.

Aerial

nodes proximal to first peduncle usually 1–3(–5+), distalmost 1–3 internodes 1–2(–8+) cm.

2n

= 26 (+ 0–4B).

= 24 (+ 0–2 Bs).

Coreopsis lanceolata

Coreopsis leavenworthii

Phenology Flowering (Mar–)May–Jul(–Aug). Flowering year round, mostly May–Jul.
Habitat Sandy soils, ditches and roadsides, other disturbed sites Moist, sandy soils, flatwoods, ditches
Elevation 30–500(–1000+) m (100–1600(–3300+) ft) 0–20+ m (0–100+ ft)
Distribution
from FNA
AL; AR; FL; GA; IL; IN; KS; KY; LA; MD; MI; MO; MS; NC; NJ; NM; NY; OH; OK; PA; SC; TN; TX; VA; VT; WI; WV; BC; ON
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from FNA
FL
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Discussion

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.)

Plants here (and generally) treated as Coreopsis leavenworthii probably should be included within the circumscription adopted here for C. tinctoria.

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

Source FNA vol. 21, p. 194. FNA vol. 21, p. 197.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Coreopsis Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Calliopsis
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. latifolia, C. leavenworthii, C. major, C. maritima, C. nudata, C. nuecensis, C. palmata, C. pubescens, C. pulchra, C. rosea, C. stillmanii, C. tinctoria, 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. major, C. maritima, C. nudata, C. nuecensis, C. palmata, C. pubescens, C. pulchra, C. rosea, C. stillmanii, C. tinctoria, C. tripteris, C. verticillata
Name authority Linnaeus: Sp. Pl. 2: 908. (1753) Torrey & A. Gray: Fl. N. Amer. 2: 346. (1842)
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