>Here are quotes from the flora I have on my lap "...Native - opposite of
>alien, a plant that colonised BI by natural means, often long ago..."
>"...alien- not native, introduced to a region deliberately or accidentally
>by man..." "...naturalised - an alien plant that has become
>self-perpetuating in BI..". Stace, 1991 New Flora of the British Isles,
>
An interesting thread - saw a programme on 'The Dinasaur Highway'
(Queensland) last night where fossils of ginko trees were in abundance -
no longer regarded a native to Australia but when you turn the eco-clock
back far enough........