Coreopsis lanceolata |
Coreopsis leavenworthii |
|
---|---|---|
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 |
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
|
FL
|
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 | ||
Name authority | Linnaeus: Sp. Pl. 2: 908. (1753) | Torrey & A. Gray: Fl. N. Amer. 2: 346. (1842) |
Web links |
|