It has a single thin, tube-shaped leaf and up to ten greenish and whitish flowers with reddish or purplish stripes.

[2][3] Prasophyllum striatum was first formally described in 1810 by Robert Brown and the description was published in Prodromus Florae Novae Hollandiae et Insulae Van Diemen.

[1][4] The specific epithet (striatum) is a Latin word meaning "furrowed", "channelled" or "striped".

[5] In 2004 David Jones and Mark Clements proposed changing the name to Mecopodum striatum but the name has not been accepted by the World Checklist of Selected Plant Families.

[6] The striated leek orchid grows in shallow soil on sandstone and near swamps mainly near the coast from Bulahdelah to Nowra but also in the Blue Mountains.