Prasophyllum collinum

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Prasophyllum collinum
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. collinum
Binomial name
Prasophyllum collinum

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.

Contents

Description

Prasophyllum collinum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single shiny, dark green, tube-shaped leaf, 250–500 mm (10–20 in) long and 8–14 mm (0.3–0.6 in) wide with a reddish base. Between twelve and thirty lemon-scented flowers are crowded along a flowering spike 8–150 mm (0.3–6 in) long. The flowers are greenish brown and white and 8–12 mm (0.3–0.5 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 lance-shaped to egg-shaped, 9–12.5 mm (0.4–0.5 in) long and 4–5 mm (0.16–0.20 in) wide with three fine dark lines. The lateral sepals are linear to lance-shaped, 9–14 mm (0.4–0.6 in) long, 2–3 mm (0.08–0.1 in) wide, and spread apart from each other. The petals are more or less linear in shape, green to purplish, 9–12 mm (0.4–0.5 in) long and 1.5–2 mm (0.06–0.08 in) wide and greenish, but white near the base. The labellum is white, oblong to egg-shaped, 12–15 mm (0.5–0.6 in) long, 6–7.5 mm (0.2–0.3 in) wide and turns sharply upwards at more than 90° near its middle. The upturned part of the labellum is wavy or crinkled and there is a yellowish-green callus with a dark green base, in the centre of the labellum. Flowering occurs in September and October. [2]

Taxonomy and naming

Prasophyllum collinum was first formally described in 2006 by David Jones from a specimen collected near Mount Olinthus and the description was published in Australian Orchid Research. [1] The specific epithet (collina) is a Latin word meaning "of a hill" or "hilly", [3] referring to the hilly terrain where this orchid is often found. [2]

Distribution and habitat

This leek orchid grows in sparse woodland, often on the sheltered side of low hills, in central and southern parts of the Eyre Peninsula. [2]

Related Research Articles

<i>Prasophyllum lindleyanum</i> species of plant

Prasophyllum lindleyanum, commonly known as the green leek orchid, is a species of orchid endemic to south-eastern Australia. It has a single smooth, tube-shaped leaf and up to twenty scented, greenish flowers with a greenish or white labellum with a pink tinge.

<i>Prasophyllum wilkinsoniorum</i> species of plant

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 candidum, commonly known as the Kiandra leek orchid, is a species of orchid endemic to eastern Australia. It has a single tubular, yellowish-green leaf and up to forty scented, bright white to greenish flowers. It grows in subalpine areas at altitudes above 1,000 m (3,000 ft) in New South Wales and Victoria although in the latter state it is considered to be a form of P. odoratum.

<i>Prasophyllum dossenum</i> species of plant

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 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 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 laxum, commonly known as the lax leek orchid, is a species of orchid endemic to a small region of South Australia. It has a single tubular leaf and up to twenty pale green, tan and lilac-coloured flowers. It was first collected in the 1960s in a location known as the Hundred of Koppio on the Eyre Peninsula but was not described until 2008 from a new collection in 2004.

<i>Prasophyllum patens</i> species of plant

Prasophyllum patens, commonly known as the broad-lipped leek orchid or sandstone leek orchid, is a species of orchid endemic to the Sydney region of New South Wales. It has a single tubular green leaf and up to thirty green to greenish-brown, lemon-scented flowers with a white labellum.

Prasophyllum truncatum, commonly known as the truncate leek orchid, is a species of orchid endemic to Tasmania. It has a single tubular, dark green leaf and up to twenty whitish flowers with purplish and greenish-brown markings. It is a late-flowering leek orchid and its flowering is stimulated by earlier fire.

<i>Prasophyllum viretrum</i> species of plant

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 tortilis is a species of orchid endemic to South Australia. It has a single tube-shaped leaf and up to ten purplish-brown and green flowers with a purple labellum. It is a recently described plant, previously included with P. fitzgeraldii, but distinguished from that species by its smaller number of smaller, more darkly coloured, short-lived flowers. It also resembles P. goldsackii but has fleshier flowers than that species.

Prasophyllum catenemum is a species of orchid endemic to South Australia. It has a single tubular leaf and up to twenty white and green to purplish flowers. It is only known from a small area of the coast of the state where it grows in shrubland which is often engulfed by uynstable sand dunes.

<i>Prasophyllum basalticum</i>

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 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.

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. 1 2 "Prasophyllum collinum". APNI. Retrieved 1 February 2018.
  2. 1 2 3 Jones, David L. (2006). "New taxa of Australian Orchidaceae". Australian Orchid Research. 5: 147–148.
  3. ↑ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 218.
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