Coreopsis lanceolata
Coreopsis gigantea
garden coreopsis, lance-leaf coreopsis, lance-leaf tick-seed, lanced-leaf coreopsis, sand coreopsis
giant coreopsis
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 mostly filiform, 10–35(–75) × 0.5–1(–2) mm.
(8–)12–20(–35+) cm.
4–12(–18+) cm.
8–13+;
laminae 20–35+ mm.
yellow, 15–30+ mm.
6–7.5 mm, apices yellow.
5–6 mm.
deltate to lance-deltate, 8–12+ mm.
8–14+, lance-ovate, 10–12+ mm.
of lance-ovate to lance-linear or linear bractlets 4–8(–12) mm.
of 4–12+ ovate to linear bractlets (5–)7–12+ mm.
(1–)8–12+ per stem.
(2.6–)3–4 mm, wings ± spreading, ± chartaceous, entire.
oblong-obovate, 5–7 mm.
nodes proximal to first peduncle usually 1–3(–5+), distalmost 1–3 internodes 1–2(–8+) cm.
= 26 (+ 0–4B).
= 24.
Coreopsis lanceolata
Coreopsis gigantea
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.)
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