It grows in a variety of habitats, including winter-wet depressions in sandy, loamy, laterite, or quartzite soils.

D. macrantha produces small, cup-shaped carnivorous leaves along a long stem that can be 0.16–1.5 m (0.5–4.9 ft) high as it climbs.

Its 1 in (2.5 cm) white or pink flowers emerge from June to November, blooming earlier in the more northern range.

In 1996, Jan Schlauer provided a comprehensive revision and new field key to the genus and also moved subspecies eremaea to a subspecies of D. stricticaulis, though he did not give a specific rationale for this move.

[5] Other authorities, such as Western Australia's Department of Environment and Conservation's FloraBase still recognize subspecies eremaea under D. macrantha.