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PAPAVERACEAE

POPPY FAMILY

Curtis Clark

Annual to small tree; sap often colored, often milky
Leaves basal, cauline, or both, generally toothed, lobed, or dissected; cauline generally alternate; stipules 0
Inflorescence: cyme, raceme, or panicle (terminal), or flower solitary
Flower bisexual, generally radial; sepals 2–4, sometimes shed ± at flower; petals generally 4 or 6 (or more), sometimes in 2 unlike pairs; stamens 4–many; ovary generally 1, superior, chamber generally 1, stigma lobes 0–many, ovules 1–many
Fruit: generally capsule, dehiscent by valves or pores, generally septicidal
Genera in family: 40 genera, 400 sp.: n temp, n tropical, s Africa; some cultivated (Papaver, Dicentra, Eschscholzia ). Petal length includes any spur or pouch. Hunnemannia fumariifolia Sweet (Eschscholzia-like garden per with free sepals) an uncommon waif in CA. Corydalis, Dicentra, Fumaria formerly treated in Fumariaceae.

ARCTOMECON

Perennial; hairs generally ± 5–15 mm; taproot stout; sap colorless
Leaves generally basal, obovate or wedge-shaped; teeth rounded
Inflorescence: flowers solitary, terminal
Flower: bud nodding; sepals 2–3, long-hairy; petals 4 or 6, free, obovate, white or yellow, generally persistent after pollination; stamens many, free; placentas 3–6, style 1, stigma lobes 3–6
Fruit ovate to oblong, dehiscent from tip
Seeds few, oblong, wrinkled, black
Species in genus: 3 species: sw US
Etymology: (Greek: bear poppy, from long hairs)

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