Prasophyllum graniticola

Prasophyllum graniticola
Scientific classification
Kingdom:	Plantae
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Orchidaceae
Subfamily:	Orchidoideae
Tribe:	Diurideae
Subtribe:	Prasophyllinae
Genus:	Prasophyllum
Species:	P. graniticola
Binomial name
	Prasophyllum graniticola; D.L.Jones & L.M.Copel. [1]

Last updated June 20, 2019

Prasophyllum graniticola is a species of orchid endemic to New South Wales. It has a single tubular, shiny dark green leaf and up to twenty five scented, greenish to brownish and white flowers. It is only known from two populations on the Northern Tablelands.

Endemism is the ecological state of a species being unique to a defined geographic location, such as an island, nation, country or other defined zone, or habitat type; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. The extreme opposite of endemism is cosmopolitan distribution. An alternative term for a species that is endemic is precinctive, which applies to species that are restricted to a defined geographical area.

New South Wales is a state on the east coast of Australia. It borders Queensland to the north, Victoria to the south, and South Australia to the west. Its coast borders the Tasman Sea to the east. The Australian Capital Territory is an enclave within the state. New South Wales' state capital is Sydney, which is also Australia's most populous city. In September 2018, the population of New South Wales was over 8 million, making it Australia's most populous state. Just under two-thirds of the state's population, 5.1 million, live in the Greater Sydney area. Inhabitants of New South Wales are referred to as New South Welshmen.

The Northern Tablelands, also known as the New England Tableland, is a plateau and a region of the Great Dividing Range in northern New South Wales, Australia. It includes the New England Range, the narrow highlands area of the New England region, stretching from the Moonbi Range in the south to the Queensland border in the north. The region corresponds generally to the Bureau of Meteorology forecast area for the Northern Tablelands which in this case includes Inverell although it is significantly lower in elevation.

Description

Prasophyllum graniticola is a terrestrial, perennial, deciduous, herb with an underground tuber and a single shiny, dark green, tube-shaped leaf, 300–550 mm (10–20 in) long and 3–5 mm (0.1–0.2 in) wide with a purplish base. Between ten and twenty five flowers are crowded along a flowering spike 100–200 mm (4–8 in) long, reaching to a height of up to 600 mm (20 in). The flowers are sweetly scented and greenish to brownish. 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 egg-shaped to lance-shaped, 8–10 mm (0.3–0.4 in) long, about 4 mm (0.2 in) wide and has three to five darker veins and a pointed tip. The lateral sepals are linear to lance-shaped, 8–10 mm (0.3–0.4 in) long, about 2 mm (0.08 in) wide and spread widely apart from each other. The petals are white with a red central line, linear to narrow spatula-shaped 8–10 mm (0.3–0.4 in) long and about 2 mm (0.08 in) wide. The labellum is white, oblong to lance-shaped, 8.5–10.5 mm (0.3–0.4 in) long, about 4 mm (0.2 in) wide and turns sharply upwards through more than 90°. There is an egg-shaped to wedge-shaped yellow callus with a dark green base in the centre of the labellum and extending well past the bend. Flowering occurs between late November and late December.^[2]

A perennial plant or simply perennial is a plant that lives more than two years. Some sources cite perennial plants being plants that live more than three years. The term is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth from trees and shrubs, which are also technically perennials.

In the fields of horticulture and botany, the term deciduous (/dɪˈsɪdʒuəs/) means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, after flowering; and to the shedding of ripe fruit.

Herbaceous plants in botany, frequently shortened to herbs, are vascular plants that have no persistent woody stems above ground. Herb has other meanings in cooking, medicine, and other fields. Herbaceous plants are those plants that do not have woody stems, they include many perennials, and nearly all annuals and biennials, they include both forbs and graminoids.

Taxonomy and naming

Prasophyllum graniticola was first formally described in 2018 by David Jones and Lachlan Copeland from a specimen collected near Ebor and the description was published in Australian Orchid Review.^[1] The specific epithet (graniticola) is derived from the Latin word granum meaning "granite" (amongst other meanings)^[3]^:376 and the suffix -cola meaning "dweller",^[3]^:217 referring to the habitat preference of this species, compared to the basaltic soils preferred by the similar P. basalticum .^[2]

David Lloyd Jones is an Australian horticultural botanist and the author of a large number of books and papers, especially on Australian orchids.

Lachlan Mackenzie Copeland( 1973 -) is an Australian botanist, who obtained his M.Sc. at the University of New England., with a thesis entitled Systematic studies in Homoranthus.

Ebor is a village on Waterfall Way on the Northern Tablelands in New South Wales, Australia. It is situated about 80 km (50 mi) east of Armidale and about a third of the way between Armidale and the coast. Dorrigo to the east is 46 kilometres (29 mi) away with the Coffs Coast 55 kilometres (34 mi) away along Waterfall Way. In the 2016 census, Ebor's zone had a population of 166.

Distribution and habitat

This leek orchid grows with grasses, bracken fern and spiny-head mat-rush in woodland at altitudes of about 1,200 m (4,000 ft). It is only known from two populations near Ebor.^[2]

Pteridium esculentum, commonly known as bracken fern, Austral bracken or simply bracken, is a species of the bracken genus native to a number of countries in the Southern Hemisphere. Esculentum means edible.

Lomandra longifolia, commonly known as spiny-head mat-rush, spiky-headed mat-rush or basket grass, is a perennial, rhizomatous herb found throughout eastern Australia. The leaves are 40 cm to 80 cm long, and generally have a leaf of about 8 mm to 12 mm wide. It grows in a variety of soil types and is frost, heat and drought tolerant. Labillardiere described Lomandra longifolia from a specimen collected in Tasmania.

Related Research Articles

Prasophyllum australe, commonly known as the southern leek orchid or austral leek orchid, is a species of orchid and is endemic to south-eastern Australia. It has a single tubular, green leaf and up to fifty scented, greenish-brown flowers with red stripes.

Prasophyllum wilkinsoniorum is a species of orchid endemic to New South Wales. It has a single tubular, bright green leaf and up to forty five scented, dark greenish-brown to brownish-red flowers with a green to pinkish labellum. It grows in grassy places in a restricted area on the Southern Tablelands.

Prasophyllum canaliculatum, commonly known as the channelled leek orchid or summer leek orchid, is a species of orchid endemic to a small area of southern New South Wales. It has a single tubular, bright green leaf and up to twenty five scented, greenish-red or brownish flowers on a flowering stem. It grows in woodland at altitudes around 1,000 m (3,000 ft) where only about two hundred plants survive.

Prasophyllum dossenum is a species of orchid endemic to a small area of northern New South Wales. It has a single tubular, dark green leaf and up to thirty scented pinkish-white and greenish-brown flowers crowded along an erect flowering stem. It is a rare orchid which grows in grassy places on the Northern Tablelands of New South Wales.

Prasophyllum erythrocommum, commonly known as the tan leek orchid, is a species of orchid endemic to Victoria. It has a single tubular green leaf and up to thirty small, greenish-brown to dark brown flowers. It is a very rare orchid, only known from a single small area north of Melbourne.

Prasophyllum incompositum is a species of orchid endemic to Queensland. It has a single tubular, dark green leaf and up to thirty scented, greenish-brown and white flowers. It has only been recorded from the Carnarvon National Park.

Prasophyllum maccannii, commonly known as the inland leek orchid, is a species of orchid endemic to Victoria. It has a single tubular green leaf and up to forty green, greenish-pink or brownish flowers. It is found in the central-west of the state, growing in open forest.

Prasophyllum subbisectum, commonly known as the Pomonal leek orchid, is a species of orchid endemic to Victoria. It has a single, thin tubular leaf and up to fifteen small, greenish-brown to brown flowers well-spaced along a thin flowering stem. It is only known from a small area around Stawell.

Prasophyllum uvidulum, commonly known as the summer leek orchid, is a species of orchid endemic to Victoria. It has a single, tubular leaf and up to twenty five scented, pale green flowers with reddish markings and is only known from a swamp in the north-east of the state.

Prasophyllum viretrum is a species of orchid endemic to Victoria. It has a single tubular, dark green leaf and up to thirty five scented, greenish-brown to brownish flowers and is only known from a few small populations in south-western Victoria.

Prasophyllum roseum, commonly known as the pink lip leek orchid, is a species of orchid endemic to southern continental Australia. It has a single tube-shaped leaf and up to thirty greenish flowers with a pink labellum. It is a recently described plant, previously included with P. fitzgeraldii, but distinguished from that species by its smaller, less crowded flowers, with more spreading lateral sepals and different labellum callus. It grows in the south-east of South Australia and in western Victoria.

Prasophyllum nitidum, commonly known as the shining leek orchid, is a species of orchid endemic to southern continental Australia. It has a single tube-shaped leaf and up to twenty maroon, magenta or purple and green flowers with a pale purple to maroon labellum. It is a recently described plant, previously included with P. fitzgeraldii, but distinguished from that species by its shorter flower spike, glossy flowers and shining, raised labellum callus. It grows in the south-east of South Australia and in a single location in western Victoria.

Prasophyllum stygium, commonly known as the elfin leek orchid, is a species of orchid endemic to Victoria. It has a single tube-shaped leaf and up to twenty greenish-brown flowers with a white labellum. It is a recently described plant, previously included with P. fitzgeraldii, but distinguished from that species by its greenish-brown flowers with their white labellum and narrower brown callus. It is only known from a single population of about thirty plants.

Prasophyllum collinum is a species of orchid endemic to South Australia. It has a single tubular leaf and up to thirty lemon-scented, greenish brown and white flowers. It is only known from the Eyre Peninsula where it grows in sparse woodland.

Prasophyllum praecox, commonly known as the early leek orchid, is a species of orchid endemic to eastern Australia. It has a single tubular leaf and up to ten green to greenish brown and white flowers and is found in the southern parts of the Yorke Peninsula in South Australia.

Prasophyllum basalticum is a species of orchid endemic to New South Wales. It has a single tubular, dark green leaf and up to fifteen scented, greenish-brown to brownish-red flowers with a white and green labellum. It grows in grassy woodland on the Northern Tablelands.

Prasophyllum brevisepalum is a species of orchid endemic to New South Wales. It has a single tubular, shiny dark green leaf and up to thirty five scented, yellowish to brownish green and white flowers. It is only known from a single population growing in woodland near Inverell.

Prasophyllum holzingeri is a species of orchid endemic to New South Wales. It has a single tubular, shiny dark green leaf and up to fifteen unscented, greenish to brownish pink and white flowers. It is only known from a few populations in the Barrington Tops area.

Prasophyllum pictum is a species of orchid endemic to New South Wales. It has a single tubular, shiny dark green leaf and up to twenty two scented brown, pink, purple and white flowers. It is only known from three subpopulations on the Northern Tablelands.

Prasophyllum pilligaense is a species of orchid endemic to New South Wales. It has a single tubular, shiny dark green leaf and up to thirty scented greenish brown to brownish and white flowers. It is only known from a few populations in the Coonabarabran district.

References

1 2 "Prasophyllum graniticola". APNI. Retrieved 25 June 2018.
1 2 3 Jones, David L.; Copeland, Lachlan M. (2018). "Six new species of Prasophyllum R.Br. in the Prasophyllum patens R.Br. /Prasophyllum odoratum R.S.Rogers complex from northern New South Wales". Australian Orchid Review. 83 (1): 44–45.
1 2 Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.

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[APNI-1] 1 2 "Prasophyllum graniticola". APNI. Retrieved 25 June 2018.

[AOR-2] 1 2 3 Jones, David L.; Copeland, Lachlan M. (2018). "Six new species of Prasophyllum R.Br. in the Prasophyllum patens R.Br. /Prasophyllum odoratum R.S.Rogers complex from northern New South Wales". Australian Orchid Review. 83 (1): 44–45.

[RWB-3] 1 2 Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.