Oenothera podocarpa |
Oenothera stricta |
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Chilean evening primrose |
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Habit | Herbs annual, villous proximally, glabrate, strigillose and/or glandular puberulent distally, leaves glabrate to densely villous, glabrate in age; from stout taproot. | |
Stems | ascending to erect, unbranched or well-branched at base and distally, 15–100 cm. |
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Leaves | in a basal rosette and cauline, basal 3–15 × 0.5–1 cm, blade lyrate; cauline 1–9 × 0.1–0.8 cm, blade linear to very narrowly elliptic or narrowly lanceolate, margins sinuate-dentate to subentire. |
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Flowers | 4-merous, zygomorphic, opening at sunset; floral tube 6–10 mm; sepals 6–12 mm; petals white, fading pink to red, narrowly obovate, 5.5–9.5 mm, short-clawed; filaments 4–6 mm, anthers 2–3 mm, pollen 90–100% fertile; style 11–19 mm, stigma surrounded by anthers at anthesis. |
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Capsules | ellipsoid or narrowly obovoid, narrowly 4-winged, furrowed between wings, 6–8 × 2–3 mm, narrowed at base, stipe 0 mm; sessile. |
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Seeds | 4, yellowish to reddish brown, 2–3 × 1–1.5 mm. |
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2n | = 14. |
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Oenothera podocarpa |
Oenothera stricta |
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Phenology | Flowering (May–)Jun–Oct. | |
Habitat | Disturbed sites, sandy washes, slopes, grasslands, meadows, pinyon-juniper or ponderosa pine woodlands, on volcanic cinders. | |
Elevation | 700–2800 m. (2300–9200 ft.) | |
Distribution |
AZ; NM; Mexico (Chihuahua, Durango, Sonora) |
South America [Introduced, California] |
Discussion | Oenothera podocarpa occurs in Arizona from eastern Mohave County south through the mountains of central Arizona to eastern Pima County and the southwestern quarter of New Mexico, and in Mexico southward in the Sierra Madre Occidental to eastern Sonora and throughout the western halves of Chihuahua and Durango. P. H. Raven and D. P. Gregory (1972[1973]) determined O. podocarpa to be self-compatible and primarily autogamous. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (1 in the flora). Oenothera stricta is a PTH species and forms a ring of 14 chromosomes in meiosis, and is self-compatible and autogamous (W. Dietrich 1977). Subspecies stricta is naturalized in many areas around the world and may be so in California. Subspecies altissima W. Dietrich occurs only in Argentina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 10. | FNA vol. 10. |
Parent taxa | Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Gaura > subsect. Gaura | Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Oenothera > subsect. Munzia > ser. Allochroa |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Gaura podocarpa, G. brassicacea, G. glandulosa, G. gracilis, G. hexandra subsp. gracilis, G. strigillosa, O. hexandra subsp. gracilis | |
Name authority | (Wooton & Standley) Krakos & W. L. Wagner: PhytoKeys 28: 68. (2013) | Ledebour ex Link: Enum. Hort. Berol. Alt. 1: 377. (1821) — (as striata) |
Web links |