Conostylis breviscapa is a tufted, perennial, grass-like plant or herb or multi-stemmed plant forming clumps wide and up to high. The leaves are flat, typically long and wide with feather-like hairs on the edges. The flower stem is up to long, each flower on a pedicel long. The flowers are long and the perianth is yellow with six more or less equaltepals, the inner segments long. There are six stamens and the style is long. Flowering occurs from August to December or January.