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Eschscholzia californica

Cham. (1820)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Ranunculopsida Order: Ranunculales Family: Papaveraceae Genus: Eschscholzia

california poppy

Description

Key Characters:

Growth Form: Glaucous, subglabrous annual or perennial herbs with colorless sap.

Stems: Stems erect or ascending, sprawling with age, 2–6 dm long, branched.

Roots:

Leaves: Leaves simple. Alternate. Blades ternately cleft into numerous lobes; the lobes linear–elliptic, ca. 3–12 cm long, 1–3 mm wide. Surfaces sometimes glaucous. Margins highly dissected. Petiolate. Stipules absent.

Flowers: Flowers solitary, terminal; peduncles 3–15 cm long. Flowers bisexual (perfect), actinomorphic; Receptacle with 2 rings, outer one spreading, 2–4 mm wide, inner one erect and hyaline. Calyx of 2 sepals; sepals completely connate into a calyptra that is pushed off by the expanding petals; calyptra 1–4 cm long, caducous. Corolla of 4(6,8) petals; petals dark orange to yellow, broadly obovate, distinct, 2–6 cm long. Stamens numerous; filaments short; anthers linear, dithecal, opening by longitudinal slits. Ovary superior, cylindrical, longitudinally 10–ribbed; stigma of 4–6 linear lobes.

Fruit: Capsules cylindrical; tapering to apex; 3–8(–10) cm long; dehiscing by 2 valves from base upward. Seeds numerous; grayish brown; 1.2–1.5 mm long; reticulate; endosperm oily.

Ploidy: 2n = 12

Habitat:

Elevation Range: ca. 2,270 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Water/Ocean
Wind

Pollinators

Specimens

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Bibliography

Name Published In: C.G.D.Nees von Esenbeck, Horae Phys. Berol.: 74 (1820)

Other References

Wagner et al. 1990:1006 (EM, H); Staples & Herbst 2005:449 (DESCR)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Eschscholzia californica Cham. Land Alae, along Kula Hwy. Naturalizing in roadcut and edges of gulf PRESERVED_SPECIMEN Wagner, W.L. 5668 Maui BISH 7/12/1986
2 Eschscholzia californica Cham. mauna kea, hale pohaku Growing in open Mamane-Naio scrub forest. PRESERVED_SPECIMEN clarke, g. collector number: 443 Hawaii BISH 6/3/1980
3 Eschscholzia californica Cham. Mauna Kea, Hale Pohaku Growing in open Mamane-Naio scrub forest. PRESERVED_SPECIMEN Clarke, G. 443 Hawaii BISH 6/3/1980
4 Eschscholzia californica Cham. hawaii volcanoes national park, kilauea, national park residence area PRESERVED_SPECIMEN f. r. fosberg 45156 Kauai BISH 3/15/1964
5 Eschscholzia californica Cham. land alae, along kula hwy. naturalizing in roadcut and edges of gulf PRESERVED_SPECIMEN wagner, w.l. mill, s.w.; hobdy, r.; et al. collector number: 5668 Maui BISH 7/12/1986
6 Eschscholzia californica Cham. mauna kea state park, hale pohaku ranger station PRESERVED_SPECIMEN wagner, w.l. mill, s.w.; lammers, t.; weller, s.; sakai, a.; davis-jacobsen, j. collector number: 5580 Hawaii BISH 6/25/1985
7 Eschscholzia californica Cham. Hawaiian Ocean View estates, Kau. Roadside on Pineapple Avenue. UTM 2117745N, 211275E. Growing with Senecio madagascariensis, Dodonaea viscosa, Metrosideros polymorpha, Leptecophylla tameiameiae. PRESERVED_SPECIMEN Parker, J. BIED 170 Hawaii BISH 4/30/2012
8 Eschscholzia californica Cham. Mauna Kea State Park, Hale Pohaku Ranger Station PRESERVED_SPECIMEN Wagner, W.L. 5580 Hawaii BISH 6/25/1985
9 Eschscholzia californica Cham. unknown windswept, forest PRESERVED_SPECIMEN anon. collector number: s.n. Oahu BISH
10 Eschscholzia californica Cham. ca. 6 miles west of caupo, along highway 31. pahihi gully PRESERVED_SPECIMEN thorne, k.; mckinnon, c. z. 10658 WIS 8/6/1993
11 Eschscholzia californica Cham. hale pohaku PRESERVED_SPECIMEN Hawaii US 6/25/1985
12 Eschscholzia californica Cham. hale pohaku ranger station PRESERVED_SPECIMEN Hawaii US 6/25/1985
13 Eschscholzia californica Cham. Mauna Kea State Park, Hale Pohaku Ranger Station. PRESERVED_SPECIMEN W. L. Wagner 5580 Hawaii PTBG 6/25/1985
14 Eschscholzia californica Cham. MAUI: E. Maui, Makawao District, Kohea 1-2 ahupuaa, Kula Hwy., near 15 mile marker, mauka side of road. Roadside with other weeds such as Ageratina, Lepidium, Nicotiana, Bidens, fennel, Nasturtium, kikuyu, Senecio, Neonotonia, Bocconia, Avena. PRESERVED_SPECIMEN Hank Oppenheimer H51003 Maui PTBG 5/31/2010
15 Eschscholzia californica Cham. just north of kula, maui PRESERVED_SPECIMEN f. r. fosberg 48375 Maui US 3/26/1967
16 Eschscholzia californica Cham. East Maui, Makawao District, Kohea 1-2 ahupuaa, Kula Hwy. near 15 mile marker, mauka side of road, Roadside with other weeds such as Ageratina, Lepidium, Nicotiana, Bidens, Fennel, Nasturtium, kikuyu, Senecio, Neonotonia, Bocconia, Avena. PRESERVED_SPECIMEN Oppenheimer, H.L. H51003 Maui BISH 5/31/2010
17 Eschscholzia californica Cham. hawaii national park; park residence area PRESERVED_SPECIMEN fagerlund, g.o. mitchell, a.l. collector number: 90 Hawaii BISH 9/22/1942
18 Eschscholzia californica Cham. Hawaii National Park; Park Residence area PRESERVED_SPECIMEN Fagerlund, G.O. 90 Hawaii BISH 9/22/1942
19 Eschscholzia californica Cham. unknown PreservedSpecimen Anon. Collector Number: s.n. BISH Specimen
20 Eschscholzia californica Cham. Mauna Kea, Hale Pohaku Growing in open Mamane-Naio scrub forest. PRESERVED_SPECIMEN Clarke, G. Collector Number: 443 Hawaii BISH 6/3/1980
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