Poisoned chalice

Its common names include Golden Chalice Vine; botanical name Solandra maxima. Its place of origin is from Mexico, south to Colombia. The botanical name is in honour of Swedish botanist Daniel Solander who came to Australia with Captain Cook and naturalist Joseph Banks in 1770. 

I photographed it today, growing alongside a main road close to home. I thought it was a medium size tree, but it is described as a large and very vigorous vine. The trumpet-shaped flowers are huge, up to 200 mm in diameter. 

My title reflects the warning that every part of the plant is poisonous.  GardensOnline webpage has more information, including that it flowers in spring and summer. It was flowering today in Lennox Head in late autumn.