Coreopsis lanceolata
Coreopsis nuecensis
garden coreopsis, lance-leaf coreopsis, lance-leaf tick-seed, lanced-leaf coreopsis, sand coreopsis
crown tickseed
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.
basal and cauline on proximal 1/5–1/3(–1/2) of plant heights;
petioles 1–8+ cm;
blades simple or 1(–2)-pinnately lobed, simple blades or terminal lobes ± elliptic to lanceolate, 10–30 × 5–15 mm.
(8–)12–20(–35+) cm.
(5–)10–25+ cm.
yellow, 15–30+ mm.
yellow, usually each with (2–)4–8+ proximal, red-brown or purple flecks, 12–18+ mm.
6–7.5 mm, apices yellow.
2.5–3.2 mm, apices yellow.
deltate to lance-deltate, 8–12+ mm.
lance-oblong, 6–8(–10+) mm.
of lance-ovate to lance-linear or linear bractlets 4–8(–12) mm.
of ± deltate to lance-oblong bractlets 4–6(–8) mm.
(2.6–)3–4 mm, wings ± spreading, ± chartaceous, entire.
2.5–4 mm, wings spreading, ± chartaceous, entire.
nodes proximal to first peduncle usually 1–3(–5+), distalmost 1–3 internodes 1–2(–8+) cm.
nodes proximal to first peduncle usually 1–3(–5), distalmost 1–3 internodes 2–4(–9+) cm.
= 26 (+ 0–4B).
= 12, 14, 18, 20.
Coreopsis lanceolata
Coreopsis nuecensis
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.)
Coreopsis nuecensis is probably in Mexico (Tamaulipas) and was collected once in Florida (“Escaped from cultivation”). Plants with glabrous phyllaries and chromosome numbers of 2n = 18 and 20 and included here in C. nuecensis have been called C. nuecensoides.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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