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

leafstem tickseed

Habit Perennials, 10–30(–60+) cm. Annuals, (5–)12–30(–50) 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.

lobes linear, 3–30 × 0.5–3 mm.

Peduncles

(8–)12–20(–35+) cm.

5–25+ cm.

Ray florets

(5–)8+;

laminae 12–20(–30) mm.

Ray laminae

yellow, 15–30+ mm.

Disc florets/Disc corollas

6–7.5 mm, apices yellow.

(12–)40–100+;

corollas 4–6.6 mm.

Phyllaries

deltate to lance-deltate, 8–12+ mm.

(5–)8, lance-ovate to lanceolate, 6–10+ mm.

Calyculi

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

of 3–5 ovate-deltate bractlets (3–)4–6 mm.

Cypselae

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

Disc cypselae

oblanceolate to linear, 5–6 mm;

pappi 3–4(–5) mm.

Ray cypselae

± oblong, 4–6 mm.

Aerial

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

Paleae

seldom basally adnate to and falling with disc cypselae.

2n

= 26 (+ 0–4B).

= 24.

Coreopsis lanceolata

Coreopsis calliopsidea

Phenology Flowering (Mar–)May–Jul(–Aug). Flowering Feb–Jun.
Habitat Sandy soils, ditches and roadsides, other disturbed sites Alkaline playas, flood plains, deep sands
Elevation 30–500(–1000+) m (100–1600(–3300+) ft) 100–1000 m (300–3300 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
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
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.)

Source FNA vol. 21, p. 194. FNA vol. 21, p. 188.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Coreopsis Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Pugiopappus
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. 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. tinctoria, C. tripteris, C. verticillata
Synonyms Agarista calliopsidea
Name authority Linnaeus: Sp. Pl. 2: 908. (1753) (de Candolle) A. Gray: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 90. (1859)
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