Oenothera spp.
Family: Onagraceae
Oenothera image
Max Licher  
Fls 4-merous, solitary in the axils or forming a terminal raceme or spike, commonly vespertine and ephemeral, but matutinal or diurnal and lasting several days in spp. 13-17; hypanthium usually slenderly tubular and prolonged well beyond the ovary (at least 3 mm in all but one of our spp.), deciduous from the fr; sep at first connate, often with terminal or subterminal appendages, splitting at anthesis and reflexed; pet in most of our spp. yellow, in two white or pink, often large and showy; stamens 8, equal or alternately unequal; anthers versatile (sometimes obscurely so in small fls); sporogenous tissue continuous in each microsporangium; ovary 4-locular; ovules numerous; style ┬▒elongate; stigma with 4 slender lobes stigmatic all around; capsule prismatic to terete or winged, linear to ovoid or obovoid, in some spp. deeply sulcate and strongly angled; herbs with alternate, mostly narrow lvs. (Kneiffia, Hartmannia, Lavauxia, Megapterium, Meriolix, Peniophyllum, Raimannia) 80, New World.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Image of Oenothera acaulis
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Image of Oenothera angustissima
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Image of Oenothera bifrons
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Image of Oenothera breviflora
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Image of Oenothera bufonis
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Image of Oenothera canovirens
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Image of Oenothera cruciformis
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Image of Oenothera depressa
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Image of Oenothera epilobiifolia
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Image of Oenothera epilobioides
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Image of Oenothera f1 hybrid
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Image of Oenothera fremontii
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Image of Oenothera guadalupensis
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Image of Oenothera hamata
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Image of Oenothera hilgardii
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Image of Oenothera macbrideae
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Image of Oenothera maysillesii
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Image of Oenothera montana
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Image of Oenothera muelleri
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Image of Oenothera multicaulis
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Image of Oenothera nanella
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Image of Oenothera nitida
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Image of Oenothera oblonga
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Image of Oenothera perangusta
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Image of Oenothera pringlei
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Image of Oenothera pubens
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Image of Oenothera pygmaea
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Image of Oenothera riskindii
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Image of Oenothera rubricalyx
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Image of Oenothera sessilis
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Image of Oenothera subglobosa
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Image of Oenothera tenuissima
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Image of Oenothera tidestromii
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Image of Oenothera torreyi
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Image of Oenothera triangulata
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Image of Oenothera utahensis
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Image of Oenothera versicolor
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Image of Oenothera watsonii
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Image of Oenothera wrightii
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