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Oenothera
Family: Onagraceae
Oenothera image
Tony Frates
  • Gleason & Cronquist
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Vascular plants of NE US and adjacent Canada
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.

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Species within checklist: Kansas
Oenothera albicaulis
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Oenothera albinervis
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Oenothera biennis
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Oenothera brachycarpa
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Oenothera canescens
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Oenothera canovirens
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Oenothera cinerea
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Oenothera coronopifolia
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Oenothera ctenophylla
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Oenothera curtiflora
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Oenothera delessertiana
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Oenothera depressa
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Oenothera elata
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Oenothera engelmannii
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Oenothera fendleri
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Oenothera fremontii
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Oenothera grandis
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Oenothera greggii
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Oenothera hamata
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Oenothera howardii
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Oenothera jamesii
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Oenothera laciniata
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Oenothera latifolia
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Oenothera lavandulifolia
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Oenothera linifolia
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Oenothera macrocarpa
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Oenothera missouriensis
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Oenothera muricata
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Oenothera nuttallii
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Oenothera ornata
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Oenothera pycnocarpa
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Oenothera rhombipetala
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Oenothera serrulata
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Oenothera simsiana
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Oenothera speciosa
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Oenothera triloba
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Oenothera villosa
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