Drosera adelae, commonly known as the lance-leaved sundew, is a tropical, rainforest-adapted carnivorous plant endemic to the coastal ranges of Far North Queensland, particularly around Hinchinbrook Island and the Rockingham Bay region. It thrives in moist, shaded environments such as creek banks, waterfalls, and seepages, often growing on wet rock faces or sandy soils under rainforest canopies. While it prefers low to moderate light, it can tolerate brighter conditions, turning a deep red in strong light and remaining green in shade.
 
D. adelae forms a basal rosette of long, narrow lanceolate leaves covered in dew-producing tentacles. Leaf size varies with conditions, typically ranging from 5–15 cm, but mature plants can reach up to 50 cm in diameter under ideal conditions. It produces small, star-shaped red flowers on tall, spiraling inflorescences.
 
The plant is evergreen in stable conditions but may enter partial dormancy during dry periods, retreating to the roots. It reproduces primarily through root offsets, but can also be propagated via leaf or root cuttings.