Dysphania pusilla, formerly Chenopodium pusillum, otherwise known as pygmy goosefoot or parahia in Māori, is a prostrate herb endemic to the north-eastern parts of South Island, New Zealand.

Dysphania pusilla is an annual, puberulent herb, growing to around 20 centimetres (8 in) in length and often forming a cushion-like covering on surfaces such as clay and rocks.

The herb is distinguishable from other species of the genus (such as the introduced Dysphania pumilio) through the slightly smaller seeds, a different number of tepals and the close positioning of the leaves in relation to each other.

[6][7] The plant is usually found in dry, sparsely-vegetated open spaces, including ephemeral wetlands, but has also been known to bloom in urban environments such as railway yards and agricultural land.

[2] The plant was prevalent until 1959, when the last known sample was located beside a railway siding in Christchurch, and although Colenso had described it as abundant in Maori cultivations,[12] it got no mention in any lists of indigenous "weeds" affecting agriculture or horticulture,[7] and was by 1999 considered data deficient.