Prasophyllum barnettii

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Anglesea leek orchid
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Subtribe: Prasophyllinae
Genus: Prasophyllum
Species:
P. barnettii
Binomial name
Prasophyllum barnettii

Prasophyllum barnettii, commonly known as the Anglesea leek orchid, is a species of orchid endemic to Victoria. It has a single tubular leaf and between twelve and thirty scented yellowish, reddish or brownish flowers and is only known from a small area in the south of the state.

Contents

Description

Prasophyllum barnettii is a terrestrial, perennial, deciduous, herb with an underground tuber and a single tube-shaped leaf up to 120 mm (5 in) long and 2–3 mm (0.08–0.1 in) wide at the base. Between twelve and thirty scented yellowish, reddish or brownish flowers are arranged along a thin flowering spike 70–120 mm (3–5 in) long reaching to a height of 200–350 mm (8–10 in). 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, 7–10 mm (0.3–0.4 in) long. The lateral sepals are a similar size and shape to the dorsal sepal and are sometimes joined to each other near their bases. The petals are linear in shape and about 6–8 mm (0.2–0.3 in) long. The labellum is reddish or white, 6–8 mm (0.2–0.3 in) long, turns upwards at about 90° and has slightly wavy edges. Flowering occurs from October to December. [2] [3]

Taxonomy and naming

Prasophyllum barnettii was first formally described in 2006 by David Jones and Dean Rouse from a specimen collected near Anglesea and the description was published in Australian Orchid Research. [1] The specific epithet (barnettii) honours the Australian naturalist Paul Barnett (1927-1996). [3]

Distribution and habitat

This leek orchid grows with grasses or shrubs in forest in the Otway Ranges and coastal areas between Anglesea and Princetown. [2]

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<i>Prasophyllum colensoi</i> Species of orchid

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<i>Prasophyllum frenchii</i> Species of plant

Prasophyllum frenchii, commonly known as the maroon leek orchid or swamp leek orchid, is a species of orchid endemic to south-eastern continental Australia. It has a single tubular green leaf and up to sixty five green, reddish-brown or red flowers. Formerly more widespread, it is now confined to seven populations containing a total of fewer than 1,000 plants.

Prasophyllum hygrophilum, commonly known as the swamp leek orchid, is a species of orchid endemic to Victoria. It has a single tubular green leaf and up to thirty greenish brown, pink or mauve flowers. It is a rare orchid only known from two populations and is classified as "endangered" in Victoria.

Prasophyllum incorrectum, commonly known as the golfer's leek orchid, is a species of orchid endemic to Tasmania. It has a single tubular, dark green leaf and up to twenty scented, yellowish-green and reddish-brown flowers. The largest population occurs on a golf course.

Prasophyllum litorale, commonly known as the coastal leek orchid, is a species of orchid endemic to southern continental Australia. It has a single tubular leaf and up to forty flowers with red and green colouring and grows in sandhills near the sea.

Prasophyllum niphopedium, commonly known as the marsh leek orchid, is a species of orchid endemic to a small area in Victoria. It has a single tubular leaf and up to twenty greenish flowers with reddish markings. It is only known from five population on grassy alpine plains with the total number of individual plants less than five hundred.

Prasophyllum olidum, commonly known as the pungent leek orchid is a species of orchid endemic to Tasmania. It has a single tubular, green to yellowish-green leaf and up to thirty bright green to brownish-green flowers. It is a very rare orchid, only found in a single location with a population which fluctuates from three to two hundred flowering plants.

Prasophyllum readii, commonly known as the Streathem leek orchid, is a species of orchid endemic to Victoria. It has a single, tubular leaf and up to twenty five scented, greenish-brown to reddish-brown flowers with a white or pinkish labellum and is only known from a swamp in the south-west of the state.

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.

<i>Prasophyllum viretrum</i> Species of orchid

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 fitzgeraldii, commonly known as FitzGerald's leek orchid, is a species of orchid endemic to South Australia. It has a single tube-shaped leaf and up to thirty five green or reddish-brown flowers with a pink to purple labellum. It was previously thought to also occur in Victoria.

Prasophyllum beatrix, commonly known as the Marung leek orchid, is a species of orchid endemic to eastern Australia. It has a single tubular leaf and up to thirty five scented flowers with yellowish-green or purplish markings and is mainly confined to New South Wales.

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 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 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. 1 2 "Prasophyllum barnettii". APNI. Retrieved 1 November 2017.
  2. 1 2 Jeanes, Jeff. "Prasophyllum barnettii". Royal Botanic Gardens Victoria - vicflora. Retrieved 1 November 2017.
  3. 1 2 Jones, David L. (2006). "New taxa of Australian Orchidaceae". Australian Orchid Research. 5: 145–146.