Oenothera laciniata |
Oenothera falfurriae |
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cut-leaf evening-primrose, southern evening primrose |
royal evening primrose |
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Habit | Herbs annual, sparsely to moderately strigillose, sometimes also villous, sometimes also becoming glandular puberulent distally. | Herbs annual, moderately to sparsely strigillose and villous, sometimes glandular puberulent distally. |
Stems | erect to ascending, unbranched to much branched, 5–50 cm. |
erect to ascending, usually unbranched, 10–40 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, basal 5–12 ×1.3–3.5 cm, cauline 2–8.5 ×1–3 cm; blade green, narrowly oblanceolate to narrowly elliptic or narrowly lanceolate, margins usually dentate to pinnatifid, sometimes subentire; bracts spreading, flat. |
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. |
usually 1 opening per day near sunset; buds erect, with free tips erect, 0.5–2 mm; floral tube 25–40 mm; sepals 10–22 mm; petals yellow, fading orange or reddish tinged, broadly obovate or shallowly obcordate, 13–25 mm; filaments 10–17 mm, anthers 4–5 mm, pollen 85–100% fertile; style 35–50 mm, stigma slightly exserted beyond anthers at anthesis. |
Capsules | cylindrical, sometimes slightly enlarged toward apex, 20–50 × 2–4 mm. |
cylindrical, sometimes slightly enlarged toward apex, 20–45 × 2–2.5 mm. |
Seeds | ellipsoid to subglobose, 0.9–1.8 × 0.4–0.9 mm. |
ellipsoid, 0.8–1.4 × 0.3–0.6 mm. |
2n | = 14. |
= 14. |
Oenothera laciniata |
Oenothera falfurriae |
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Phenology | Flowering (Feb–)Apr–Sep(–Oct). | Flowering Apr–Aug. |
Habitat | introduced nearly worldwide in temperate and subtropical areas.. | Open, sandy sites. |
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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TX |
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 falfurriae is known only from southeastern Texas (Aransas, Brazos, Brooks, Cameron, Frio, Harris, Hidalgo, Jim Hogg, Jim Wells, Kenedy, Kleberg, Maverick, Nueces, Refugio, Starr, Val Verde, Victoria, Webb, Willacy, Wilson, and Zapata counties). It is self-compatible and autogamous, but not a PTH species. (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. Oenothera > subsect. Raimannia |
Sibling taxa | ||
Synonyms | O. minima, O. repanda, O. sinuata, O. sinuata var. minima, Onagra sinuata, Raimannia laciniata | |
Name authority | Hill: Veg. Syst. 12(app.): 64, plate 10. (1767) | W. Dietrich & W. L. Wagner: Ann. Missouri Bot. Gard. 74: 149. (1987) |
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