Oenothera laciniata |
Oenothera filipes |
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cut-leaf evening-primrose, southern evening primrose |
slenderstalk beeblossom |
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Habit | Herbs annual, sparsely to moderately strigillose, sometimes also villous, sometimes also becoming glandular puberulent distally. | 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 to ascending, unbranched to much branched, 5–50 cm. |
erect, branched below and just above ground, branched also proximal to inflorescences, 60–250(–300) cm. |
Leaves | in a basal rosette and cauline, basal 4–15 × 1–3 cm, cauline 2–10 × 0.5–3.5 cm; blade green, narrowly oblanceolate to narrowly elliptic or narrowly oblong, margins usually dentate or deeply lobed; bracts spreading, flat. |
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. |
Inflorescences | slender, often well-branched, buds small and well-spaced. |
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Flowers | usually 1 opening per day near sunset; buds erect, with free tips erect, 0.3–3 mm; floral tube 12–35 mm; sepals 5–15 mm; petals yellow, fading orange or reddish tinged, broadly obovate or obcordate, 5–22 mm; filaments 3–14 mm, anthers 4–5 mm, pollen ca. 50% fertile; style 20–50 mm, stigma surrounded by anthers at anthesis. |
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. |
Capsules | cylindrical, sometimes slightly enlarged toward apex, 20–50 × 2–4 mm. |
ovoid, narrowly 4-winged or 4-angled, 5–10 × 1.5–2 mm, abruptly constricted to a sterile stipe 0.5–4.5 mm. |
Seeds | ellipsoid to subglobose, 0.9–1.8 × 0.4–0.9 mm. |
1 or 2, yellowish to reddish brown, 1.5–3.5 × 1–1.5 mm. |
2n | = 14. |
= 14. |
Oenothera laciniata |
Oenothera filipes |
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Phenology | Flowering (Feb–)Apr–Sep(–Oct). | Flowering May–Sep(–Oct). |
Habitat | introduced nearly worldwide in temperate and subtropical areas.. | Sandy hills and flats, open woods. |
Elevation | 0–1000(–1300) m. (0–3300(–4300) ft.) | 0–300 m. (0–1000 ft.) |
Distribution |
AL; AR; CA; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NJ; NM; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; VT; WI; WV; WY [Introduced nearly worldwide in temperate and subtropical areas]
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AL; FL; GA; IL; IN; KY; LA; MO; MS; SC; TN
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Discussion | Oenothera laciniata is a PTH species and forms aring of 14 chromosomes in meiosis, and is self-compatible and autogamous (W. Dietrich and W. L. Wagner 1988). Oenothera laciniata is known in New Mexico from Doña Ana and Roosevelt counties from non-montane habitats and thus do not appear to represent O. pubescens; however, a few collections from Brewster and Jeff Davis counties, Texas, reported by W. Dietrich and W. L. Wagner (1988) as O. laciniata appear to represent collections of O. pubescens. Dietrich and Wagner found that O. laciniata hybridizes not only with O. grandis, but also with O. drummondii subsp. drummondii, O. humifusa, and O. mexicana. It is naturalized nearly worldwide in temperate and subtropical areas. (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. Raimannia | Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Gaura > subsect. Stipogaura |
Sibling taxa | ||
Synonyms | O. minima, O. repanda, O. sinuata, O. sinuata var. minima, Onagra sinuata, Raimannia laciniata | Gaura filipes, G. filipes var. major, G. michauxii |
Name authority | Hill: Veg. Syst. 12(app.): 64, plate 10. (1767) | (Spach) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 212. (2007) |
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