Australian Clematis flowers

Australia has 8 species of native Clematis flowers. Identification of each can be a little difficult, but I am fairly sure these are Clematis aristata, commonly known as "Travellers' Joy" or "Old Man's Beard". These are growing vigorously at present, as shown in the PiP both near the camera and, further distant, the bright white patch in the sunlight. The actual flowers are about 3-4 cm across.