Genoplesium systenum

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Kangarooby 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. systenum
Binomial name
Genoplesium systenum
Synonyms [1]

Corunastylis systena(D.L.Jones) D.L.Jones & M.A.Clem.

Contents

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.

Description

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. [2] [3] [4]

Taxonomy and naming

The Kangarooby 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 systena but that name is not accepted by the Australian Plant Census. [1] [6] The specific epithet (systenum) derived from the Ancient Greek word systenos meaning "tapering to a point", [7] referring to the shape of the labellum of this orchid. [3] (Kangarooby is a locality near Forbes.)

Distribution and habitat

Genoplesium systenum grows below shrubs in forested ridges and slopes on the ranges near Cowra, including the Conimbla National Park and Weddin Mountains National Park. [2] [3] [4]

Related Research Articles

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

Genoplesium nudum, commonly known as the tiny midge orchid in Australia or the red midge orchid in New Zealand, is a small terrestrial orchid native to south-eastern Australia and New Zealand. It has a single thin leaf fused to the flowering stem and up to forty small, reddish-purple or green and red flowers. Australian and New Zealand authorities use the name Corunastylis nuda but Genoplesium nudum and Prasophyllum transversum are used by the World Checklist of Selected Plant Families.

Genoplesium rufum, commonly known as the rufous midge-orchid, is a species of orchid endemic to New South Wales. It has a single thin, wiry leaf and up to twenty five drooping, pinkish or reddish flowers on a flowering stem which is fused to the lower part of the leaf. It was formerly thought to range from Queensland to South Australia and Tasmania but specimens in other states are now assigned to Genoplesium clivicola.

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

Genoplesium filiforme, commonly known as the glandular midge orchid is a small terrestrial orchid endemic to the east coast of Australia. It has a single thin leaf and up to thirty greenish to purple flowers with a reddish-purple labellum. The edges of its flower parts are covered with many short glandular hairs. It is found from southern Queensland to southern New South Wales.

<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.

Genoplesium acuminatum, commonly known as the pointed midge orchid and as Corunastylis acuminata in Australia, is a small terrestrial orchid endemic to eastern Australia. It has a single thin leaf fused to the flowering stem and up to sixteen small, hairy, greenish purple to brownish purple flowers. It is found in coastal and near-coastal parts of New South Wales and Queensland.

<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 apostasioides</i> Species of orchid

Genoplesium apostasioides, commonly known as the freak midge orchid, is a small terrestrial orchid endemic to New South Wales. It has a single thin leaf fused to the flowering stem and up to fifteen small, yellowish green flowers with a reddish labellum. The flowers do not open widely and are self-pollinating. It grows in heath and shallow moss gardens on rock ledges from the Blue Mountains to Nerriga.

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 firthii, commonly known as Firth's midge orchid, is a species of small terrestrial orchid endemic to Tasmania. It has a single thin leaf fused to the flowering stem and up to six small, yellowish green or reddish flowers with a red labellum. It grows in coastal heath and scrub and is currently known only from a single population of about twelve plants near Coles Bay.

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 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.

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 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.

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 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.

<i>Corunastylis laminata</i> Species of orchid

Corunastylis laminata, commonly known as the red midge orchid, is a small terrestrial orchid endemic to New South Wales. It has a single thin leaf fused to the flowering stem and up to twenty bright reddish flowers. It grows in heath and grassy forest in a few places on the South Coast and Central Tablelands.

References

  1. 1 2 3 "Genoplesium systenum". 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 3 Jones, David L. (1991). "New taxa of Australian Orchidaceae". Australian Orchid Research. 2: 72–73.
  4. 1 2 Jones, David L. "Genoplesium systenum". Royal Botanic Garden Sydney. Retrieved 11 February 2018.
  5. "Genoplesium systenum". APNI. Retrieved 11 February 2018.
  6. "Corunastylis systena". APNI. Retrieved 11 February 2018.
  7. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 623.