"Wallaby" writes:
Linda, Trish Brown is dead right with her ID. It is a noxious weed, bloody
horrible import! get rid of it, too ugly to be a native of Oz IMHO.

The one good thing about okna is that it is extremely susceptible to the
Zero and Roundup weedicides, especially when still a seedling. One spray
wetting all the leaves and the okna is kaput within a week or two. Just as
with the asthma weed, spraying okna gives very satisfying results!

(I'm offline so haven't actually examined the cited photo, however.)
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John Savage (news address invalid; keep news replies in newsgroup)