Kangarooby Midge Orchid (Genoplesium systenum)
Description
Genoplesium superbum, commonly known as the Kangarooby midge orchid, is a small terrestrial orchid which is endemic to New South Wales. It has a single thin leaf and up to thirty two hairy, light reddish flowers which lean downwards and have a dark purple labellum. Genoplesium systenum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single thin leaf 120–300 mm (5–10 in) long with the free part 15–25 mm (0.6–1 in) long. Between twelve and thirty two light reddish flowers are arranged along a flowering stem 30–60 mm (1–2 in) long, reaching to a height of 150–360 mm (6–10 in). The flowers lean downwards and are about 6 mm (0.2 in) wide. As with others in the genus, the flowers are inverted so that the labellum is above the column rather than below it. The dorsal sepal is broadly egg-shaped, about 3.5 mm (0.1 in) long, 2.5 mm (0.1 in) wide and greenish with reddish-purple bands and hairy edges. The lateral sepals are linear to lance-shaped, about 5 mm (0.2 in) long, 1.5 mm (0.06 in) wide, light reddish green and spread widely apart from each other. The petals are narrow egg-shaped, about 3 mm (0.1 in) long, 1 mm (0.04 in) wide with hairy edges and a similar colour to the dorsal sepal. The labellum is narrow egg-shaped, dark purple, about 3.5 mm (0.1 in) long and 1.5 mm (0.06 in) wide with coarse, spreading hairs up to 1 mm (0.04 in) long on its edges. There is a dark purple callus in the centre of the labellum and covering about three-quarters of its surface. Flowering occurs from February to April.
Taxonomic tree
-
Domain: Eukarya
-
-
Kingdom: Plantae
-
-
Phylum:
-
-
Class: Liliopsida
-
-
Order: Asparagales
-
-
Family: Orchidaceae
-
-
Genus: Genoplesium
-
-
-
-
-
-
