Oenothera neomexicana |
Oenothera drummondii |
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New Mexico evening-primrose |
beach evening-primrose |
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Habit | Herbs perennial, glabrate proximally, strigillose and villous distally; from a taproot, also with lateral roots producing adventitious shoots. | |
Stems | erect or ascending, unbranched or branched, 30–60 cm. |
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Leaves | in a basal rosette and cauline, rosette weakly developed or absent, at least during flowering, 3–9 × (0.6–)1–2.5 cm; petiole 0–2 cm; blade oblong to lanceolate or narrowly ovate, margins irregularly sinuate-dentate. |
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Flowers | 1–several opening per day near sunset; buds nodding, weakly quadrangular, with free tips 0.5–4 mm; floral tube 30–50 mm; sepals 20–30 mm, not spotted; petals white, fading pink, broadly obovate, 20–30 mm; filaments 10–15 mm, anthers 8–15 mm; style 50–70 mm, stigma exserted beyond anthers at anthesis. |
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Capsules | erect or strongly ascending, not woody, straight or slightly curved, subcylindrical, obtusely 4-angled, tapering gradually from base to apex, 20–30 × 2–3 mm; sessile. |
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Seeds | numerous, in 1 row per locule, dark brown, narrowly obovoid, 1.5 mm. |
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Subspecies | thalassaphila (Brandegee) W. |
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Dietrich | & W. |
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l | . |
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Wagner | differs from subsp. drummondii in a number of modally distinctive morphological features, especially floral tubes 2–3.5 cm, sepal tips 0.3–1 mm, capsules 2–4 cm × 2.5–5 mm in diameter and those, coupled with the great disjunction from the Atlantic coast of the United States and Mexico to the southern tip of Baja California, make it worthy of recognition. |
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Oenothera | drummondii is self-compatible and outcrossing. |
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2n | = 14. |
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Oenothera neomexicana |
Oenothera drummondii |
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Phenology | Flowering (Mar–)Jun–Jul(–Sep). | |
Habitat | Uncommon, in rocky or sandy clay or loamy soil in coniferous forest openings, stream valleys, roadsides. | |
Elevation | 1500–3300 m. (4900–10800 ft.) | |
Distribution |
AZ; NM
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n Mexico; s United States
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Discussion | Oenothera neomexicana is known from central to western New Mexico west of the Rio Grande Valley, except for the Organ Mountains, and eastern and central Arizona from the White Mountains south to Mount Graham and northwestward across the Mogollon Rim in Coconino and Yavapai counties. Oenothera neomexicana had been assumed to be self-incompatible (W. L. Wagner et al. 2007), but K. E. Theiss et al. (2010) determined one population sampled to be consistently self-compatible. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (1 in the flora). (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. Anogra | Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Oenothera > subsect. Raimannia |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Anogra neomexicana | Raimannia drummondii |
Name authority | (Small) Munz: Amer. J. Bot. 18: 317. (1931) | Hooker: Bot. Mag. 61: plate 3361. (1834) |
Web links |