Cyrtostylis reniformis
Cyrtostylis reniformis, commonly known as common gnat-orchid, is a species of orchid endemic to eastern Australia. It usually has a single kidney-shaped leaf and a flowering spike with up to eight reddish flowers with a shelf-like labellum. "Cyrtostylis huegelii" is a similar species occurring in Western Australia and which some authorities regard as a synonym of "Cyrtostylis reniformis" var. "huegelii". Description. "Cyrtostylis reniformis" is a terrestrial, perennial, deciduous, herb with a single kidney-shaped, heart-shaped or almost round leaf long and wide. Up to eight dark reddish brown, or rarely yellowish flowers long are  borne on a flowering stem high. The dorsal sepal is erect and curved forward, linear to lance-shaped, long and about wide. The lateral sepals are linear, long, about wide and curve forwards or downwards. The petals are similar in size and shape to the lateral sepals and curve downwards. The labellum is oblong, long and about wide and shelf-like with a few serrations near its pointed tip. Flowering occurs from May to October. Taxonomy and naming. "Cyrtostylis reniformis" was first formally described in 1810 by Robert Brown and the description was published in "Prodromus Florae Novae Hollandiae et  Insulae Van Diemen". The specific epithet (reniformis) is derived from the Latin "ren", "renis" meaning "kidney" and "forma" meaning "shape". Varieties. Two varieties are currently recognized as of April 2018: Distribution and habitat. The eastern Australian variety of "C. reniformis" is widespread and locally common from coastal scrub to inland forest and heath. It occurs in Queensland, New South Wales, the Australian Capital Territory, Victoria, South Australia and Tasmania.