Drosera macrantha, the bridal rainbow, is a scrambling or climbing perennial tuberous species in the carnivorous plant genus Drosera that is endemic to southwest Western Australia. It would be one of the largest sundews and grows in a variety of habitats, including winter-wet depressions in sandy, loamy, laterite or quartzite soils. It produces small, cup-shaped carnivorous leaves along a stem that can be 0.16-1.5 m (0.5-4.9ft) high as it climbs. Its 2.5cm (1 inch) white or pink flowers emerge from June to November, blooming earlier in the more northern range.
Diuris corymbosa, donkey orchid, is endemic to the southwest of Western Australia. It favours open forest in well drained soils and can form colonies. Flowers are medium size, yellow with reddish markings. Although it is said to be endemic to W.A. I feel it grows in other parts of Australia although there could be variations in colour etc. I included it because I think it is so cute. I just love those donkey ears.
This next one is a little confusing as I hadn't realised it had been reclassified.
Dryandra speciosa until 2007, but now known as Banksia splendida and common known as 'shaggy dryandra' it is a shrub endemic to Western Australia. In 2007 all Dryandra species were included with the Banksias. It is far too technical to even try to understand yet talk about it here but it is such a delightful flower I had to include it under D as I've already done B. It is rather special isn't it?