Austral. Orchid Res. 5: 78 (2006) APNI
Threat status:Victoria: extinct (x)
Flowering plant slender, 15–30 cm tall. Leaves mostly 4–7, linear, 10–25 cm long, in a loose, erect tussock. Flowers 1–4, semi-erect to porrect, mostly pale yellow with dark stains on labellum; pedicel (excluding ovary) 2.5–5 cm long, slender, partly enclosed within bract; dorsal sepal porrect or obliquely erect, ovate, 11–15 mm long, much shorter than other perianth parts, yellow with some dark striations at base; lateral sepals obliquely deflexed, usually parallel, linear-oblanceolate, 15–25 mm long, green; petals spreading, 14–25 mm long, claw green, lamina ovate-lanceolate or elliptic-lanceolate, yellow. Labellum porrect or obliquely deflexed, 15–22 mm long, 3-lobed; lateral lobes small, oblong-cuneate, outer margins irregularly erose; mid-lobe almost flat, c. 4 times as long as the lateral lobes, broadly ovate, yellow with tan-brown stains and striations, narrowed at base, with 2 widely separated, pubescent, longitudinal ridges extending shortly beyond base, a single, less distinct ridge continuing almost to apex. Column wings slightly exceeding the anther. Flowers Aug.–Sep.
Poorly known in Victoria, but in New South Wales found in Callitris woodland on well-drained sand and sandy loams.
Possibly extinct in Victoria where known only from two old collections from near Swan Hill and Wycheproof.
Similar to Diuris protena, but that species has generally smaller flowers with a narrower labellum that has lighter central stains and striations.
|Bioregion||Occurrence status||Establishment means|
|New South Wales|