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Arctomecon merriamii

Higher Taxonomy
Family: PapaveraceaeView DescriptionDichotomous Key

Habit: Annual to small tree; sap colorless, yellow, orange, red, or white. Leaf: basal, cauline, or both, simple and entire, toothed, or lobed, or 1--3-pinnate-dissected or compound; cauline generally alternate; stipules 0. Inflorescence: terminal, 1-flowered or cyme, raceme, or panicle; bracts generally present. Flower: bisexual, radial, bilateral, or biradial; sepals 2--3, shed after flower; petals generally 2 × sepals in number; stamens generally many; ovary 1, superior, chamber 1, style 0 or 1, stigmas or lobes 2--many, ovules few to many. Fruit: capsule, dehiscent by valves or pores, +- nut, or breaking transversely into 1-seeded, indehiscent units. Seed: fleshy appendage generally 0.
Genera In Family: 25--30 genera, 200 species: northern temperate, northern tropics; some cultivated (Papaver, Eschscholzia, Hunnemannia), source of opiates. Note: Stylomecon moved to Papaver. Corydalis, Dicentra, Fumaria in Fumariaceae in FNANM, elsewhere. Glaucium flavum Crantz is a waif. According to FNANM (3:300--301), Hunnemannia fumariifolia Sweet (+- like Eschscholzia except sepals free) an occasional waif in California, but documentation evidently lacking. Fleshy appendage of seed sometimes for dispersal by ants.
eFlora Treatment Author: Gary L. Hannan & Curtis Clark, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: ArctomeconView Description 

Habit: Perennial herb; hairs generally +- 5--15 mm; taproot stout; sap colorless or yellow. Leaf: generally basal, obovate or wedge-shaped, long white-hairy; teeth rounded. Inflorescence: terminal, 1-flowered. Flower: bud nodding; sepals 2--3, long-hairy; petals 4 or 6, free, obovate, white [yellow], generally persistent after flower; stamens many, free; placentas 3--6, style 1, stigma lobes 3--6. Fruit: ovate to oblong, dehiscent from tip. Seed: few, oblong, wrinkled, black; aril present; fleshy appendage present.
Species In Genus: 3 species: southwestern United States. Etymology: (Greek: bear poppy, from long hairs)

Arctomecon merriamii Coville
Habit: Plant 2--5 dm. Stem: glaucous. Leaf: 2.5--12 cm. Flower: sepals 3, 15--20 mm; petals 6, 25--40 mm. Fruit: 25--40 mm. Seed: 1.5--2 mm.
Ecology: Rocky slopes; Elevation: 800--1600 m. Bioregional Distribution: ne DMoj; Distribution Outside California: southern Nevada. Flowering Time: Apr--May
Unabridged Note: Arctomecon californica Torr. & Frém. (sepals 3, glabrous; petals 6, yellow) in southwestern Nevada, northern Arizona, but undocumented for California.
eFlora Treatment Author: Gary L. Hannan & Curtis Clark
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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botanical illustration including Arctomecon merriamii


Citation for this treatment: Gary L. Hannan & Curtis Clark 2016. Arctomecon merriamii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 03, 2016.

Arctomecon merriamii
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© 1998 John Game
Arctomecon merriamii
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© Roxanne Bittman and CNPS
Arctomecon merriamii
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© 2010 James M. Andre
Arctomecon merriamii
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© 2006 Gary A. Monroe
Arctomecon merriamii
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© 1998 Christopher L. Christie
Arctomecon merriamii
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© 2010 James M. Andre

More photos of Arctomecon merriamii in CalPhotos

Geographic subdivisions for Arctomecon merriamii:
ne DMoj;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.