Flora of North America species comparison

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Coreopsis rosea

Coreopsis gigantea

pink tick-seed

giant coreopsis
Habit Perennials, 10–30(–60) cm. Subshrubs or shrubs (± pachycaul, fleshy), (10–)30–250+ cm.
Leaves

mostly cauline; opposite;

petioles 0–1 mm, ciliate or not;

blades lance-linear to linear or filiform, 20–45(–60) × 1–2(–3+) mm, rarely with 1–2 lateral lobes.

lobes mostly filiform, 10–35(–75) × 0.5–1(–2) mm.
Peduncles

2–4(–6+) cm.

4–12(–18+) cm.
Ray florets

8–13+;

laminae 20–35+ mm.
Ray laminae

pinkish to white, 9–15+ mm.

Disc florets/Disc corollas

40–60+;

corollas ochroleucous to yellow, 2.5–3 mm.

5–6 mm.
Phyllaries

deltate-ovate, 4.5–5.5 mm.

8–14+, lance-ovate, 10–12+ mm.
Calyculi

of oblong to linear bractlets 1.5–2+ mm.

of 4–12+ ovate to linear bractlets (5–)7–12+ mm.
Heads

(1–)8–12+ per stem.
Cypselae

narrowly oblong, 1.3–1.8 mm, not winged;

pappi 0.

oblong-obovate, 5–7 mm.
Internodes

(± mid stem) 1–4(–5+) cm.

2n

= 26.

= 24.

Coreopsis rosea

Coreopsis gigantea
Phenology Flowering Aug–Sep. Flowering Jan–Jul.
Habitat Sandy shores, marsh edges, etc. Coastal bluffs, dunes
Elevation 0–50 m (0–200 ft) 0–200 m (0–700 ft)
Distribution
from FNA
DE; MA; NJ; PA; RI; SC; NS
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
Discussion

Occurrence of Coreopsis rosea in South Carolina may represent a human-mediated disjunction; the collection came from a “lime sink” near a trailer park close to a freeway.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 196. FNA vol. 21, p. 187.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Eublepharis Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Tuckermannia
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. lanceolata, C. latifolia, C. leavenworthii, C. major, C. maritima, C. nudata, C. nuecensis, C. palmata, C. pubescens, C. pulchra, C. stillmanii, C. tinctoria, C. tripteris, C. verticillata
C. auriculata, C. basalis, C. bigelovii, C. californica, C. calliopsidea, C. delphiniifolia, C. douglasii, 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 Leptosyne gigantea
Name authority Nuttall: Gen. N. Amer. Pl. 2: 179. (1818) (Kellogg) H. M. Hall: Univ. Calif. Publ. Bot. 3: 142. (1907)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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