Prasophyllum keltonii D.L.Jones

Plants 300–35
 tall. Free part of leaf to 150 x 3–5mm. Spike 50–9
 long, 12–22-flowered. Ovary sessile, bright green. Flowers crowded, scented, 12–14 x 7–9mm, red, green, brownish-red or purplish, labellum reddish or brownish, callus green or reddish. Dorsal sepal 7.5–8.5 x 4–4.5mm, constricted towards apex, decurved or recurved. Lateral sepals free, 8.5–10 x 2mm, parallel, erect or recurved. Petals 7–8.5 x 1.3mm, incurved to spreading. Labellum shortly stalked, ovate-lanceolate, 6.5–7.5 x 4–5mm, broadest at base, sharply recurved near middle and contracted to narrow tapered tail, margins entire. Callus quadrate, deeply grooved, margins raised and ridge-like, ending just beyond bend.

Known from single locality where it grows among grass tussocks and forbs on large flat plain covered mainly with tussock grassland and surrounded by eucalypt woodland; soil is a moisture-retentive brown loam.