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Oenothera longiflora L.
Family Onagraceae
Oenothera longiflora L. APNI*

Description: Robust annual or biennial herb, to c. 100 cm high with basal rosette; stems densely villous with shorter glandular hairs.

Basal leaves obovate to oblanceolate, 6–18 cm long, 15–35 mm wide, minutely toothed; cauline leaves mostly ovate to elliptic, usually 2–4 cm long, 10–30 mm wide, margins irregularly toothed, sessile.

Flowers in upper leaf axils, sometimes leaves reduced and bract-like. Hypanthium 8–10 cm long. Sepals usually 1.5–2.5 cm long. Petals 2–4 cm long, yellow, often with a red base, becoming dark red with age.

Fruit cylindrical, 3–4 cm long and 3–4 mm wide, slightly curved.


Flowering: spring–autumn.

Distribution and occurrence: Naturalized in disturbed areas. Native of S Amer.
NSW subdivisions: *NC, *CC, *SWS
AVH map***

Text by J. M. Dalby
Taxon concept: Flora of NSW 2 (1991)


APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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