densiflora is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, smooth, tubular leaf 250–600 mm (10–20 in) long and 3–8 mm (0.1–0.3 in) wide.

[2][3][4] The dense mignonette orchid was first formally described in 1873 by George Bentham who gave it the name Microtis parviflora var.

[7] The last of these has since been raised to species status as M. quadrata by David Jones and Mark Clements.

[9] The dense mignonette orchid is found between Perth and Albany where it grows seasonally in wet placed.

densiflora is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.