Oenothera stricta |
Oenothera filipes |
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Chilean evening primrose |
slenderstalk beeblossom |
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Habit | Herbs perennial, clumped, sparsely to densely strigillose, inflorescence usually glabrous or glandular puberulent, sometimes proximalmost parts villous, hairs erect, 1–2 mm; from heavy, twisted, woody rootstock. | |
Stems | erect, branched below and just above ground, branched also proximal to inflorescences, 60–250(–300) cm. |
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Leaves | in a basal rosette and cauline, (1–)3–9 × (0.1–)0.5–1.3 cm, blade linear or narrowly lanceolate to narrowly oblanceolate, margins slightly to coarsely sinuate-dentate. |
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Inflorescences | slender, often well-branched, buds small and well-spaced. |
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Flowers | 4-merous, zygomorphic, opening near sunset; floral tube 2.5–6 mm; sepals 5–12.5 mm; petals white, fading pink to red, slightly unequal, elliptic, 5–10 mm, clawed; stamens presented evenly around flower parts, filaments 3–8.5 mm, anthers 1.4–4 mm, pollen 90–100% fertile; style 8.5–19 mm, stigma exserted beyond anthers at anthesis. |
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Capsules | ovoid, narrowly 4-winged or 4-angled, 5–10 × 1.5–2 mm, abruptly constricted to a sterile stipe 0.5–4.5 mm. |
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Seeds | 1 or 2, yellowish to reddish brown, 1.5–3.5 × 1–1.5 mm. |
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2n | = 14. |
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Oenothera stricta |
Oenothera filipes |
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Phenology | Flowering May–Sep(–Oct). | |
Habitat | Sandy hills and flats, open woods. | |
Elevation | 0–300 m. (0–1000 ft.) | |
Distribution |
South America [Introduced, California] |
AL; FL; GA; IL; IN; KY; LA; MO; MS; SC; TN
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Discussion | 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.) |
Oenothera filipes occurs marginally in several states, including: southernmost Illinois and southern Indiana; northern Florida; southeastern Mississippi; and, Washington Parish, Louisiana. P. H. Raven and D. P. Gregory (1972[1973]) determined O. filipes to be self-incompatible. (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. Oenothera > subsect. Munzia > ser. Allochroa | Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Gaura > subsect. Stipogaura |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Gaura filipes, G. filipes var. major, G. michauxii | |
Name authority | Ledebour ex Link: Enum. Hort. Berol. Alt. 1: 377. (1821) — (as striata) | (Spach) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 212. (2007) |
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