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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.
25–30 genera, 200 species: northern temperate, northern tropics; some cultivated (Papaver, Eschscholzia, Hunnemannia), source of opiates. 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. —Scientific Editor: Thomas J. Rosatti.
Key to Papaveraceae
1 sp. (Greek: evening or west, poppy)
Unabridged etymology: (Greek: hesper: evening or west; mecon: poppy)
Annual, 3–40 cm, spreading-hairy. Leaf: basal or ± so, 5–85 mm, linear. Inflorescence: terminal, 1-flowered; peduncle 2.5–38 cm, > leaves, spreading-hairy. Flower: buds nodding; petals 3–20 mm, 2–10 mm wide, ovate to obovate, cream, base yellow or not, or outer 3 yellow, inner 3 cream; stamens many. Fruit: 10–15 mm, ovate. Seed: 0.4 mm, reniform-obovate.
Grassy areas, washes; < 1000 m. c&s Sierra Nevada Foothills, Tehachapi Mountain Area, San Joaquin Valley, Central Western California; southern Oregon. [Meconella linearis (Benth.) A. Nelson & J.F. Macbr.] Mar–Jun [Online Interchange]
Previous taxon: Hesperomecon
Next taxon: Meconella
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 11 2013
Citation for this treatment: [Author of taxon treatment] 2012. Hesperomecon, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28048, accessed on Dec 11 2013
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© 2013 Aaron Schusteff
|Bioregions in which Hesperomecon linearis occurs||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.|
Chart based on elevation range in eFlora and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
| Data provided by the participants of the Consortium of California Herbaria.
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