Black Mountain leopard orchid

Diuris nigromontana is a tuberous, perennial herb with two linear leaves folded lengthwise. Between two and eight yellow-orange flowers are borne on a flowering stem up to 350 mm (14 in) tall. The dorsal sepal is tall and usually erect, more or less triangular but with a bluntly-pointed tip. The lateral sepals are crossed, but usually not turned backwards. The petals are usually erect, egg-shaped to round. The labellum has brownish marks and three lobes, the side lobes relatively large and oblong. Flowering occurs in October and November. This orchid is similar to D. semilunulata but is a brighter shade of yellow, has less prominent darker markings and erect petals.

Canberra donkey orchid grows in shrubby woodland and forest, and is locally common around Canberra in the Australian Capital Territory.

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