Genoplesium alticola

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Tableland 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. alticola
Binomial name
Genoplesium alticola
Synonyms [1]

Genoplesium alticola, commonly known as the tableland midge orchid, is a small terrestrial orchid endemic to Queensland. It has a single thin leaf fused to the flowering stem and up to twenty five small, hairy, dark purplish-red and green flowers. It grows in two small areas of the state at altitudes between 600 and 750 m (2,000 and 2,500 ft).

Contents

Description

Genoplesium alticola is a terrestrial, perennial, deciduous, herb with an underground tuber and a single thin leaf 150–250 mm (6–10 in) long and fused to the flowering stem with the free part 15–22 mm (0.6–0.9 in) long. Between ten and twenty five dark purplish-red and green flowers are well spaced along a flowering stem 18–40 mm (0.7–2 in) tall but lower than the leaf. The flowers are 5–6 mm (0.20–0.24 in) long, about 5 mm (0.2 in) wide and are inverted so that the labellum is above the column rather than below it. The dorsal sepal is egg-shaped, about 5 mm (0.20 in) long and 4 mm (0.2 in) wide with darker edges and three lines along its centre. The edges of the dorsal sepal have short, dark hairs. The lateral sepals are linear to lance-shaped, dark purplish red, about 5 mm (0.2 in) long, 1.5 mm (0.06 in) wide and spread widely apart from each other. The petals are a broad egg-shape, dark purplish red with marking similar to those on the dorsal sepal and are about 3 mm (0.1 in) long and 1.5 mm (0.06 in) wide densely hairy edges. The labellum is elliptic to egg-shaped with the narrower end towards the base, about 3 mm (0.1 in) long, 1.5 mm (0.06 in) wide, with short, coarse hairs on the sides. There is an oblong callus in the centre of the labellum and covering about half of its surface. Flowering occurs between December and February. [2] [3]

Taxonomy and naming

Genoplesium alticola was first formally described in 1991 by David Jones from a specimen collected near Danbulla and the description was published in Australian Orchid Research. [4] The specific epithet (alticola) is derived from the Latin words altus meaning "high" [5] :409 and cola meaning "dweller", [5] :217 referring to the plant's relatively high altitude habitat. [2]

Distribution and habitat

Genoplesium alticola grows in sparse forest, often in grass tussocks on ridges on higher places. It is only known from the Atherton Tableland near Heberton and on Walshs Pyramid. [2] [3]

Related Research Articles

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

Genoplesium plumosum, commonly known as the Tallong midge-orchid or plumed midge-orchid, is a species of orchid endemic to New South Wales. It is a small orchid only known from a few sites near the towns of Tallong and Wingello on the Southern Tablelands and is only relatively easy to find for about a month, when it flowers. It has been classified as "Endangered" under the EPBC Act.

Genoplesium woollsii, commonly known as the dark midge-orchid, is a species of orchid endemic to New South Wales. It has a single thin, wiry leaf and in autumn has up to thirty five drooping, dark purple flowers on a flowering stem which is fused to the lower part of the leaf.

<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 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 and as Corunastylis citriodorum in Australia, is a small terrestrial orchid 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.

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

Genoplesium clivicola, known as Corunastylis clivicola 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 five small, greenish and reddish flowers. It grows in forest and woodland in Victoria, the Australian Capital Territory and New South Wales.

Genoplesium confertum, commonly known as the crowded midge orchid, is a small terrestrial orchid endemic to the south-east of Queensland. It has a single thin leaf fused to the flowering stem and up to sixty small, densely crowded, reddish and green flowers and grows in coastal heath.

Genoplesium morinum, commonly known as the mulberry midge orchid and as Corunastylis morina in Australia, 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 crowded, dark reddish purple flowers. It has been known as "mulberries on sticks".

Genoplesium pedersonii, commonly known as Pederson's midge orchid, is a 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.

Genoplesium psammophilum is a small terrestrial orchid endemic to coastal and near-coastal areas in south-eastern Queensland. It has a single thin leaf fused to the flowering stem and up to thirty five small, dark red or brownish red flowers.

<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 ruppii, commonly known as Rupp's midge orchid and as Corunastylis ruppii 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 twenty five small, hairy green flowers with a purple labellum.

Genoplesium sagittiferum, commonly known as the horned midge orchid and as Corunastylis sagittifera in Australia, is a small terrestrial orchid endemic to New South Wales. It has a single thin leaf fused to the flowering stem and up to ten small, yellowish-green flowers with a hairy reddish labellum.

Genoplesium sigmoideum, commonly known as the Dave's Creek midge orchid, is a small terrestrial orchid 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.

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 small terrestrial orchid which 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 tasmanicum, commonly known as the Tasmanian midge orchid, is a small terrestrial orchid which 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 small terrestrial orchid 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.

References

  1. "Genoplesium acuminatum". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. 1 2 3 Jones, David L. (1991). "New taxa of Australian Orchidaceae". Australian Orchid Research. 2: 66.
  3. 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. 176. ISBN   1877069124.
  4. "Genoplesium alticola". APNI. Retrieved 26 January 2018.
  5. 1 2 Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.