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Glaucium flavum

(Yellow Horned Poppy)

Overview

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Annual or biennial.

The oil from the pressed seeds is used as a fuel in lamps and in the manufacture of soap.

Common Names

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Click on the language to view common names.

Common Names in Dutch:

Gele Hoornpapaver

Common Names in English:

Horn Poppy, Horned Poppy, Horned-Poppy, Sea Poppy, Sea-Poppy, Yellow Horned Poppy, Yellow Horned-Poppy, Yellow Hornpoppy

Common Names in Italian:

Papavero Marino

Common Names in Portuguese:

Papoula-Longa-Amarela

Common Names in Russian:

мачек желтый, Maček želtyj

Description

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Family Papaveraceae

Herbs or subshrubs , shrubs , or small trees , annual , biennial, or perennial , scapose or caulescent , usually from taproots , sometimes from rhizomes; sap clear, white, or colored , often sticky. Stems leafy or naked, erect , spreading , or decumbent , simple or branching. Leaves basal and/or cauline, alternate to opposite or whorled , simple, without stipules, petiolate or sessile; blade unlobed or with 1-3 odd-pinnate, subpalmate, or palmate orders of lobes . Inflorescences axillary or terminal , unifloral or else multifloral and cymiform, racemose, umbelliform, corybiform, or paniculate , pedunculate or subsessile ; bracts usually present. Flowers radially symmetric , pedicellate or sessile; receptacle sometimes expanded and forming cup or ring beneath calyx (only in Eschscholzia, Meconella, and Platystemon ) ; perianth and androecium sometimes perigynous; sepals caducous , 2 or 3, distinct or connate , usually obovate ; petals distinct, usually obovate, mostly 2 times number of sepals, sometimes more or absent; stamens many or 4-15 (only in Meconella and Canbya ) ; anthers 2-locular; pistil 1, 2-18[-22]-carpellate; ovary 1-2-locular or incompletely to completely multilocular by placental intrusion; placentas 2 or more, parietal ; style 1 or absent; stigmas or stigma lobes 2-many. Fruits capsular , dehiscence valvate , poricidal , or transverse , or carpels dissociating and breaking transversely into 1-seeded segments (only in Platystemon ) . Seeds usually many, small, sometimes arillate or carunculate.

Genera 25-30 (17 genera, 63 species in the flora ) : worldwide, mainly Northern Hemisphere.

According to W. R. Ernst (1962b), Papaveraceae "may be divided conveniently into four subfamilies." His scheme is followed here, but with the subfamilies taken up in alphabetic order; they seem to be natural groups, but their phylogenetic interrelationships are not yet clear. Similarly, the evolutionary relationships within the subfamilies remain ambiguous, and the genera in each are listed alphabetically. Subfamily Chelidonioideae Ernst includes genera 1-5; subf. Eschscholzioideae Ernst, genera 6-7; subf. Papavaroideae Ernst, genera 8-14; and subf. Platostamenoideae Ernst, genera 15-17.[1]

Genus Glaucium

Herbs, annual , biennial, or perennial , caulescent , glaucous, from taproots ; sap yellow. Stems leafy, sometimes becoming woody at base . Leaves: basal rosulate, petiolate ; cauline alternate, sessile; blades 1-2× pinnately lobed [unlobed]. Inflorescences axillary or terminal , 1-flowered; bracts present. Flowers: sepals 2, distinct ; petals 4; stamens many; pistil 2-carpellate; ovary 2-locular; style absent or indistinct; stigma 2-lobed. Capsules erect , 2-valved, dehiscing from apex [base]. Seeds many, dark brown, reticulate-pitted, embedded in pithy septum, aril absent. x = 6.

Species 20-25: North America, Europe, c, sw Asia.[2]

Physical Description

Species Glaucium flavum

Plants biennial or perennial , to 8 dm. Stems branching. Leaves to 30 cm; basal numerous , blade densely pubescent ; basal and proximal cauline with blade lyrate, 7-9-lobed; distal with blade ovate, cordate, distinctly clasping stem; margins deeply dentate . Flowers: pedicels stout, to 4 cm; sepals 20-30 mm; petals yellow, sometimes orangish, sometimes with reddish to violet basal spot, obovate , 25-40 mm. Capsules sublinear, mostly distinctly curved , sometimes straight, to 30 cm, glabrous , tuberculate , or scabrous . 2 n = 12. [source]

Habit: Forb/herb

Flowers: Bloom Period: May, June, July. • Flower Color: orange, yellow

Size/Age/Growth

Size: 18-24" tall.

Habitat

Open sandy shores and flats, waste places, and on ballast ; 0-200 m ; introduced [3].

Typically found in the intertidal zone at the water's edge at a mean distance from sea level of 52 meters (171 feet).[4]

Biology

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Reproduction

Duration: Biennial

Growth

Culture: Space 9-12" apart.

Soil: Minimum pH: 6.6 • Maximum pH: 7.8

Sunlight: Sun Exposure: Full Sun .

Temperature: Cold Hardiness: 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b. (map)

Taxonomy

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Unambiguous Synonyms

  1. Chelidonium glaucium Linnaeus, Sp. Pl. 1: 506. 1753
  2. G. luteum Scopoli

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Place of publication : Stirp. austr. fasc. 2:133. 1763

Name verified on 25-May-1995 by ARS Systematic Botanists. Last updated: 16-Mar-2007

Similar Species

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Members of the genus Glaucium

ZipcodeZoo has pages for 67 species, subspecies, varieties, forms, and cultivars in this genus:

G. acutidentatum · G. afghanicum · G. aleppense · G. aleppicum · G. anatalyjaense · G. arabicum · G. aurantiacum · G. aureum · G. bracteatum · G. calycinum · G. cappadocicum · G. caricum · G. contortuplicatum · G. corniculatum (Black-Spot Horned-Poppy) · G. corniculatum 'Burnt Orange' · G. corniculatum var. flaviflorum · G. corniculatum var. phoeniceum (Black-Spot Horned-Poppy) · G. corniculatum var. pilosum (Black-Spot Horned-Poppy) · G. corniculatum var. squamigerum (Black-Spot Horned-Poppy) · G. cuneatum · G. elbursium · G. elegans · G. fimbrilligerum · G. fischeri · G. flavum (Yellow Horned Poppy) · G. flavum aurantiacum · G. flavum 'Extra' (Yellow Horned Poppy) · G. flavum f. fulvum (Orange Horned Poppy) · G. fulvum · G. glaucium · G. glaucum · G. grandiflorum · G. haussknechtii · G. hybridum · G. insigne · G. integrifolium · G. intermedium · G. judaicum · G. leiocarpum · G. leptopodum · G. littorale · G. luteum · G. mathiolifolium · G. mesopotamicum · G. oxylobum · G. paucilobatum · G. penicum · G. persicum · G. phoeniceum · G. phoenicium · G. pulchrum · G. pumilum · G. quadratifolium · G. refractocarpum · G. refractum · G. richardsonii · G. rubrum · G. serpieri · G. spurium · G. squamigerum · G. syriacum · G. tenue · G. tricolar · G. tricolor · G. trivalve · G. violaceum · G. vitellinum

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 11, 2007:

Identifiers

Footnotes

  1. Robert W. Kiger "Papaveraceae". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org. [back]
  2. Robert W. Kiger "Glaucium". in Flora of North America Vol 3. Oxford University Press. Online at EFloras.org. [back]
  3. "Glaucium flavum". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org. [back]
  4. Standard Deviation = 221.610 based on 2,368 observations. Terrestrial altitude and ocean depth information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/1/2009