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Oenothera indecora Cambess.
Family Onagraceae
Oenothera indecora Cambess. APNI*

Description: Erect annual to c. 60 cm tall, with a basal rosette, often absent in older plants; stems few- to many-branched, often with curved lateral stems, densely short-villous and glandular pubescent.

Basal leaves narrow-oblanceolate, sessile, 5–7 cm long, 5–13 mm wide; cauline leaves narrow-elliptic to lanceolate, 1.5–5 cm long, 3–10 mm wide, sessile or ± sessile, margins irregularly toothed, undulate.

Flowers axillary. Hypanthium 5–15 mm long. Sepals to 10 mm long. Petals 6–10 mm long, yellow becoming reddish with age.

Fruit ± cylindrical, broader in the upper half, slightly curved, to 20–30 mm long, c. 2 mm wide, pubescent.


Flowering: spring–autumn.

Distribution and occurrence: Naturalized in disturbed areas; north from Sydney. Native of S Amer.
NSW subdivisions: *NC, *CC, *NT, *NWS, *CWS, *NWP
Other Australian states: *Qld *W.A.
AVH map***

This species hybridizes with O. stricta subsp. stricta. Hybrids, which are similar in general appearance to O. indecora subsp. bonariensis, are mostly readily identified by the presence of a basal rosette of long narrow leaves, similar to that of O. stricta subsp. stricta.

Text by J. M. Dalby
Taxon concept:

One subspecies in NSW : Oenothera indecora subsp. bonariensis

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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