C. lineare, also known as the green mountain lily,[6][7] is a small inconspicuous erect herb that grows to 15–30 cm in height.

[7] The flower is usually solitary, with 6 green tepals, sometimes with a burgundy tinge and developing brown edges with age,[7] lacking apparent nectaries.

[10] A study of the gene sequences of RuBisCO in C. lineare, found that the family Campynemataceae is the oldest of the order Liliales.

[12] It is most commonly found in herbfields, heathlands, cushion plant communities, and lake edges.

[15] Due to its palaeoendemic status, the Tasmanian Parks and Wildlife Service consider C. lineare to be of high conservation significance.