Common name: Wallflower Donkey Orchid
Diuris orientis D.L.Jones APNI*
Synonyms: Diuris corymbosa auct. non. Lindl. APNI*
Description: Terrestrial herb.
Leaves 2 or 3, linear to lanceolate, 10–20 cm long, 6–10 mm wide, conduplicate.
Raceme 12–35 cm high, 1–5-flowered. Flowers yellow, heavily suffused with brown and mauve, c. 2.5 c. across. Dorsal sepal broad-ovate to cuneate, 8–13 mm long, 11–14 mm wide, obliquely erect. Lateral sepals oblanceolate, 17–23 mm long, 3–4 mm wide, deflexed, parallel. Petals divergent, erect or recurved; lamina ovate, 12–17 mm long, 8–12 mm wide; claw 5–7 mm long, greenish brown. Labellum 10–14 mm long; lateral lobes narrow-ovate to cuneate, 7–11 mm long, 2.5–4 mm wide, margins entire or crenulate; midlobe cuneate when flattened, 5–8 mm wide, conduplicate; callus of a single thick ridge c. 5 mm long.
Distribution and occurrence: Grows among grass in sclerophyll forest, flowering best after fires; restricted to the Nadgee-Timbilica region.
NSW subdivisions: SC
Other Australian states: Vic. Tas. S.A.
Text by D. L. Jones
Taxon concept: Flora of NSW 4 (1993)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.