Micranthus is a cormous genus in the Iridaceae family with three species originating in the Cape Province of South Africa. This genus has small flowers in a spike that are blue, white, or purple. Growing mainly on sandstone soils, often in damp places, they mostly flower in early summer. This genus is visited by a variety of insects and is attractive to butterflies.

Micranthus junceus has slender hollow leaves and usually dark blue flowers. It grows on wet, seasonally marshy sites on granite or sandstone soils in a broader range from the Bokkeveld Mountains to Riversdale.