scale bar = 1cm.
Evening Primrose - introduced (*Oenothera stricta)
Family: Onagraceae (Willow-herb family).
Native of South America.
Occurrence: Moderately common roadside weed.
- the flowers have four yellow petals, which change to orange and red
- the flowers are in a spike along the stem
- the plant has a long flowering period as the flowers open progressively along the stem
- the leaves are stalkless, and are indistinctly toothed towards the ends
- the leaves are narrow to lance-shaped.
The flowers of Evening Primrose open at night, and are fertilised by moths. The flowers darken after fertilisation.
It is an environmental weed.
Photos: Evening Primrose. Goornong-Axedale Road, Fosterville.