Flora of North America species comparison

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Coreopsis calliopsidea

Coreopsis gigantea

leafstem tickseed

giant coreopsis
Habit Annuals, (5–)12–30(–50) cm. Subshrubs or shrubs (± pachycaul, fleshy), (10–)30–250+ cm.
Leaf

lobes linear, 3–30 × 0.5–3 mm.

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

5–25+ cm.

4–12(–18+) cm.
Ray florets

(5–)8+;

laminae 12–20(–30) mm.

8–13+;

laminae 20–35+ mm.
Disc florets/Disc corollas

(12–)40–100+;

corollas 4–6.6 mm.

5–6 mm.
Phyllaries

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

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

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

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

(1–)8–12+ per stem.
Cypselae

oblong-obovate, 5–7 mm.
Disc cypselae

oblanceolate to linear, 5–6 mm;

pappi 3–4(–5) mm.

Ray cypselae

± oblong, 4–6 mm.

Paleae

seldom basally adnate to and falling with disc cypselae.

2n

= 24.

= 24.

Coreopsis calliopsidea

Coreopsis gigantea
Phenology Flowering Feb–Jun. Flowering Jan–Jul.
Habitat Alkaline playas, flood plains, deep sands Coastal bluffs, dunes
Elevation 100–1000 m (300–3300 ft) 0–200 m (0–700 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
Source FNA vol. 21, p. 188. FNA vol. 21, p. 187.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Pugiopappus Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Coreopsis > sect. Tuckermannia
Sibling taxa
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
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 Agarista calliopsidea Leptosyne gigantea
Name authority (de Candolle) A. Gray: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 90. (1859) (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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