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Eschscholzia

Eschscholzia
Family: Papaveraceae
Eschscholzia image
Sue Carnahan
  • FNA
  • VPAP
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Curtis Clark in Flora of North America (vol. 3)
Herbs , annual or perennial, scapose or caulescent, from taproots; sap colorless or clear orange. Stems leafy. Leaves alternate, basal and sometimes cauline, petiolate; blade 1-4× pinnately deeply lobed, lobes of each order usually 3; ultimate lobes narrow. Inflorescences terminal, cymose with bracts present, or 1-flowered. Flowers: receptacle dilated, forming cup beneath calyx, sometimes with free rim; perianth and androecium perigynous; sepals 2, connate, calyptrate, deciduous as unit; petals 4, rarely more (doubled flowers), obovate to obcuneate, with satin sheen from microscopic linear grooves; stamens 12-many; pistil 2-carpellate; ovary 1-locular; style absent; stigmas 4-8, spreading, linear. Fruits capsular, cylindric, 2-valved, dehiscing from base along placentas, often explosively. Seeds many, tan, brown, or black, spheric to ovoid, reticulate, ridged and burlike, or pitted, aril absent. x = 6, 7.

Eschscholzia species are introduced from cultivation elsewhere in warm-temperate regions worldwide.

JANAS 30(2)
PLANTS: Annual or perennial herbs, the sap colorless or translucent orange. LEAVES: basal, often also cauline, glabrous, ternately dissected. FLOWERS: in scapes or few- to many-flowered cymes; stalk of each flower terminating in a funnel-shaped cup (variously interpreted as receptacle or hypanthium), the cup sometimes with a spreading rim below sepals (outer rim); sepals 2, connate, calyptrate, shed as a unit at anthesis; petals 4 (rarely more), distinct, obovate or wedge-shaped, generally yellow to orange (white or pink), shed after pollination, leaving a crown-like membrane (inner rim); stamens 12-many, distinct; placentae 2; style lacking; stigma lobes 4-8, linear, spreading. CAPSULE: cylindric, dehiscent from base. SEEDS: many, spheric to ovoid, net-ridged, bur-like, or pitted, tan, brown, or black, 1-2 mm wide. NOTES: 12 spp., 3 in AZ; w N. Amer. (For J. F. Eschscholtz). The spelling -Eschscholtzia- is incorrect according to the International Code of Botanical Nomenclature. Eschscholzia calijornica subsp. calijornica is cultivated and used in reclamation planting; the other taxa may merit domestication. REFERENCES: Ownbey, Gerald B., Jeffrey W. Brasher, and Curtis Clark. 1998 Papaveraceae. J. Ariz. - Nev. Acad. Sci. 30(2): 120.
Species within inventory project: Arizona Flora
Eschscholzia californica
Media resource of Eschscholzia californica
Map not
Available
Eschscholzia glyptosperma
Media resource of Eschscholzia glyptosperma
Map not
Available
Eschscholzia minutiflora
Media resource of Eschscholzia minutiflora
Map not
Available
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

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