Genoplesium simulans

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Blue Mountains midge orchid
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Genoplesium
Species:
G. simulans
Binomial name
Genoplesium simulans
Synonyms [1]
  • Corunastylis simulans(D.L.Jones) D.L.Jones & M.A.Clem.
  • Prasophyllum morrisii var. intermedium Rupp

Genoplesium simulans, commonly known as the Blue Mountains midge orchid is a small terrestrial orchid which is endemic to New South Wales, where it mainly occurs in the Blue Mountains. It has a single thin leaf and up to twenty three dark purplish-black flowers which lean downwards.

Contents

Description

Genoplesium simulans is a terrestrial, perennial, deciduous, herb with an underground tuber and a single thin leaf 120–400 mm (5–20 in) long with the free part 10–20 mm (0.4–0.8 in) long. Between five and twenty three dark purplish-black flowers are arranged along a flowering stem 20–40 mm (0.8–2 in) long, reaching to a height of 160–460 mm (6–20 in). The flowers lean downwards and are 7–8 mm (0.28–0.31 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, 5 mm (0.2 in) long, 4 mm (0.2 in) wide and purple with darker bands. The edges of the dorsal sepal are densely hairy, the hairs up to 0.5 mm (0.02 in) long. The lateral sepals are linear to lance-shaped, about 7 mm (0.3 in) long, 1.5 mm (0.06 in) wide, dark reddish purple and spread widely apart from each other. The petals are narrow egg-shaped, about 4 mm (0.2 in) long, 1 mm (0.04 in) wide and greenish-purple with darker stripes and a few hairs on the edges. The labellum is narrow egg-shaped with the narrower end towards the base and is 5–6 mm (0.20–0.24 in) long, about 2 mm (0.08 in) wide with dark purplish-black hairs on the edges. There is a purplish-black, tapered callus in the centre of the labellum and covering about half of its surface. Flowering occurs from January to March. [2] [3] [4]

Taxonomy and naming

The Blue Mountains midge orchid was first formally described in 1991 by David Jones and the description was published in Australian Orchid Research. [5] In 2002, Jones and Mark Clements changed the name to Corunastylis simulans but the change is not accepted by the Australian Plant Census. [1] [6] The specific epithet (simulans) is a Latin word meaning "imitating" or "copying", [7] referring to the similarity of this species to G. morissii . [3]

Distribution and habitat

Genoplesium simulans grows in forest and with mosses in shallow soil over sandstone in the Blue Mountains and south to Mount Keira. [2]

Related Research Articles

<i>Genoplesium despectans</i> Species of orchid

Genoplesium despectans, commonly known as the sharp midge orchid and known as Corunastylis despectans in Australia, is a small terrestrial orchid endemic to south-eastern Australia. It has a single thin leaf fused to the flowering stem and up to forty five small, dark purple or green and purple flowers.

<i>Genoplesium morrisii</i> Species of orchid

Genoplesium morrisii, commonly known as the bearded midge orchid and known as Corunastylis morrisii in Australia, is a small terrestrial orchid endemic to south-eastern Australia. It has a single thin leaf fused to the flowering stem and up to fifteen small, dark purplish-black or green and purple flowers.

<i>Genoplesium archeri</i> Species of orchid

Genoplesium archeri, commonly known as the elfin midge orchid and as Corunastylis archeri in Australia, is a small terrestrial orchid endemic to south-eastern Australia. It has a single thin leaf fused to the flowering stem and up to fifteen small, hairy, yellowish green flowers with purple stripes. It grows in a wide range of habitats in New South Wales, Victoria and Tasmania.

<i>Genoplesium arrectum</i> Species of orchid

Genoplesium arrectum, commonly known as the erect midge orchid and as Corunastylis arrecta in Australia, is a small terrestrial orchid endemic to south-eastern Australia. It has a single thin leaf fused to the flowering stem and up to twenty small, dark purple flowers. It grows in a montane and subalpine grassland and forest in Victoria and the Australian Capital Territory.

Genoplesium citriodorum, commonly known as the lemon-scented midge orchid is a species of small terrestrial orchid that is endemic to New South Wales. It has a single thin leaf fused to the flowering stem and up to thirty three small, lemon scented, dark purplish black flowers. It usually grows under shrubs in shallow sandstone soil in the Blue Mountains.

Genoplesium eriochilum, commonly known as the Mount Wilson midge orchid, is a species of small terrestrial orchid endemic to the Blue Mountains. It has a single thin leaf fused to the flowering stem and up to twenty small, crowded, dark purplish brown flowers. It usually grows between low shrubs and sedges.

Genoplesium formosum, commonly known as the Cathcart midge orchid is a small terrestrial orchid found in southern New South Wales. It has a single thin leaf and up to twenty five dark reddish purple flowers with darker lines.

Genoplesium insigne, commonly known as the dark midge orchid or Wyong midge orchid is a species of small terrestrial orchid that is endemic to New South Wales. It has a single thin leaf and up to twelve dark purple to dark reddish purple flowers. It is mostly found in heath on the Central Coast and only around fifty plants survive.

Genoplesium morinum, commonly known as the mulberry midge orchid, is a species of small terrestrial orchid that is endemic to New South Wales. It has a single thin leaf fused to the flowering stem and up to twenty crowded, dark reddish purple flowers. It has been known as "mulberries on sticks".

Genoplesium pedersonii, commonly known as Pederson's midge orchid, is a species of small terrestrial orchid endemic to the Blackdown Tableland in Queensland. It has a single thin leaf fused to the flowering stem and up to thirty small, greenish red to reddish, self-pollinating flowers with a dark purplish red labellum. The species is treated as Corunastylis pedersonii in Queensland.

<i>Genoplesium rhyoliticum</i> Species of orchid

Genoplesium rhyoliticum, commonly known as the Pambula midge-orchid or rhyolite midge orchid and as Corunastylis rhyolitica in Australia, is a species of orchid endemic to New South Wales. It is a small orchid with up to eighteen dark, purplish-black flowers and is only known from six sites on the south coast where it grows in shallow soil over rhyolite.

Genoplesium sigmoideum, commonly known as the Dave's Creek midge orchid, is a species of small terrestrial orchid that is endemic to a small area in the Lamington National Park in Queensland. It has a single thin leaf fused to the flowering stem and up to twenty dark red flowers with a hairy labellum. The species is treated as Corunastylis sigmoidea in Queensland.

<i>Genoplesium vernale</i> Species of orchid

Genoplesium vernale, commonly known as the spring midge orchid or East Lynne midge orchid is a small terrestrial orchid which is endemic to a small area on the south coast of New South Wales. It has a single thin leaf and up to twenty five dark purplish-black flowers with tiny glandular hairs on the sepals and petals.

Genoplesium superbum, commonly known as the pink midge orchid or superb midge orchid, is a species of small terrestrial orchid that is endemic to New South Wales. It has a single thin leaf and up to fifteen dark pinkish-purple flowers which lean downwards. It is listed as "endangered" in New South Wales because of its limited distribution and disturbance of its habitat.

Genoplesium superbum, commonly known as the Kangarooby midge orchid, is a species of small terrestrial orchid that 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 tasmanicum, commonly known as the Tasmanian midge orchid, is a species of small terrestrial orchid that is endemic to Tasmania. It has a single thin leaf and up to twenty five dark purplish-black and green flowers. It is widespread and common at lower altitudes.

Genoplesium tectum, commonly known as the Cardwell midge orchid, is a small terrestrial orchid endemic to a small area in north-eastern Queensland. It has a single thin leaf fused to the flowering stem and up to thirty light red flowers with a dark reddish-black, hairy labellum.

Genoplesium turfosum, commonly known as the alpine midge orchid, is a small terrestrial orchid endemic to a small area in the higher parts of New South Wales. It has a single thin leaf fused to the flowering stem and up to twenty five dark purplish-red, crowded flowers with a sparsely hairy labellum.

Genoplesium validum, commonly known as the Blackdown midge orchid, is a species of small terrestrial orchid that is endemic to the Blackdown Tableland National Park in Queensland. It has a single thin leaf fused to the flowering stem and up to thirty five greenish-brown flowers with reddish stripes and a hairy labellum. This species is treated as Corunastylis valida in Queensland.

Corunastylis densa, commonly known as the dense midge orchid, is a small terrestrial orchid endemic to eastern Australia. It has a single thin leaf fused to the flowering stem and up to twenty five densely crowded reddish-brown to dark purplish-brown flowers. It is found between the New England National Park and the Moroka River.

References

  1. 1 2 3 "Genoplesium simulans". Australian Plant Census. Retrieved 13 July 2021.
  2. 1 2 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 178. ISBN   1877069124.
  3. 1 2 Jones, David L. (1991). "New taxa of Australian Orchidaceae". Australian Orchid Research. 2: 71–72.
  4. Jones, David L. "Genoplesium simulans". Royal Botanic Garden Sydney. Retrieved 10 February 2018.
  5. "Genoplesium simulans". APNI. Retrieved 10 February 2018.
  6. "Corunastylis simulans". APNI. Retrieved 10 February 2018.
  7. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 306.