Pterostylis macilenta

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Pterostylis macilenta
Pterostylis macilenta.jpg
Pterostylis macilenta growing in Grampians National Park
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Cranichideae
Genus: Pterostylis
Species:
P. macilenta
Binomial name
Pterostylis macilenta
Synonyms [1]

Bunochilus macilentus D.L.Jones

Pterostylis macilenta is a plant in the orchid family Orchidaceae and is endemic to the Grampians National Park in Victoria. As with similar greenhoods, flowering plants differ from those that are not flowering. The non-flowering plants have a rosette of leaves flat on the ground but the flowering plants have up to six translucent, dark green flowers and lack a rosette.

Contents

Description

Pterostylis macilenta, is a terrestrial, perennial, deciduous, herb with an underground tuber. Non-flowering plants have a rosette of between three and six, egg-shaped to lance-shaped leaves, each leaf 10–35 mm (0.4–1 in) long and 3–7 mm (0.1–0.3 in) wide. Flowering plants lack a rosette but have up to six flowers on a flowering spike 150–350 mm (6–10 in) high with five or six linear to narrow lance-shaped stem leaves that are 25–80 mm (1–3 in) long and 3–10 mm (0.1–0.4 in) wide. The flowers are 16–20 mm (0.6–0.8 in) long and the dorsal sepal and petals are joined to form a hood called the "galea" over the column. The galea is translucent dark green with darker green stripes. The lateral sepals turn downwards and are 10–15 mm (0.4–0.6 in) long, 7–9 mm (0.28–0.35 in) wide and joined for more than half their length. The labellum is 5–7 mm (0.2–0.3 in) long, about 2 mm (0.08 in) wide and yellowish to brown with a dark stripe along its mid-line. Flowering occurs from September to December. [2] [3]

Taxonomy and naming

This greenhood was first formally described in 2006 by David Jones and given the name Bunochilus macilentus. The description was published in Australian Orchid Research from a specimen collected on Mount William in the Grampians National Park. [4] In 2007, Gary Backhouse changed the name to Pterostylis macilenta. [1] The specific epithet (macilenta) is derived from a Latin word meaning "lean", "thin" or "poor", [5] referring to the narrow labellum. [3]

Distribution and habitat

Pterostylis macilenta is only known from the Grampians National Park where it grows with shrubs in moist forest. [2]

Related Research Articles

<i>Pterostylis chlorogramma</i> species of plant

Pterostylis chlorogramma, commonly known as the green-striped leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to Victoria. Flowering plants have up to seven translucent green flowers with darker green stripes. The flowers have a green labellum with a darker stripe down the middle. Non-flowering plants have a rosette of leaves on a short, thin stalk but flowering plants lack the rosette, instead having five to seven stem leaves.

<i>Pterostylis diminuta</i> species of plant

Pterostylis diminuta, commonly known as the small-flowered leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to Victoria. As with similar greenhoods, the flowering plants differ from those that are not flowering. The non-flowering plants have a rosette of leaves flat on the ground but the flowering plants have up to twelve small, partly green, partly translucent flowers and lack a rosette.

<i>Pterostylis jonesii</i> species of plant

Pterostylis jonesii, commonly known as the montane leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to a small area of south-eastern Australia. Individual plants have either a rosette of three to six leaves or a flowering spike with up to eleven flowers and five to seven stem leaves. The flowers are translucent green with faint darker green lines and have a brownish-yellow labellum with a dark stripe.

<i>Pterostylis multiflora</i> species of plant

Pterostylis multiflora, commonly known as the tall tiny greenhood, is a species of orchid endemic to south-eastern Australia. As with similar orchids, plants in flower differ from those that are not. Those not in flower have a rosette of leaves lying flat on the ground. Plants in flower lack a rosette but have up to twenty tiny green, white, and brown flowers in summer. The flowering stem has up to six stem leaves.

<i>Pterostylis barringtonensis</i> species of plant

Pterostylis barringtonensis, commonly known as the Barrington leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to New South Wales. As with similar greenhoods, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves on a short stalk but the flowering plants lack a rosette and have up to seven dark green flowers on a flowering stem with stem leaves. It is only known from Barrington Tops.

Pterostylis crassa, commonly known as the coarse leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to Victoria. As with similar greenhoods, plants in flower differ from those that are not. Those not in flower have a rosette of leaves on a short stalk but when flowering, plants have up to four relatively large, shiny dark green translucent flowers on a flowering stem with stem leaves.

Pterostylis chocolatina, commonly known as the chocolate-lip leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to New South Wales. As with similar greenhoods, plants in flower differ from those that are not. Plants not in flower have a rosette of leaves on a short stalk, but when in flower, plants lack a rosette and have up to thirteen green flowers on a flowering stem with stem leaves. The labellum is dark brown with a blackish lump near its base.

Pterostylis lineata, commonly known as the Blue Mountains leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to New South Wales. As with similar greenhoods, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves on a short stalk but the flowering plants lack a rosette and have up to seven dark green flowers with translucent "windows" on a flowering stem with stem leaves. The labellum is light brown with a black strip along its mid-line.

Pterostylis littoralis, commonly known as the coastal leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to South Australia. Flowering plants have up to five pale green flowers with darker green stripes and brownish tips. The flowers have a narrow, pale green labellum. Non-flowering plants have a rosette of leaves on a short, thin stalk but flowering plants lack the rosette, instead having four or five stem leaves.

Pterostylis loganii, commonly known as the Logan's leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to a small area near the border between New South Wales and Victoria. Flowering plants have up to five pale green flowers with darker green stripes and brownish tips. The flowers have a brown labellum with a blackish stripe and a blackish mound near its base. Non-flowering plants have a rosette of leaves on a short, thin stalk but flowering plants lack the rosette, instead having five to seven stem leaves.

Pterostylis macrosepala is a plant in the orchid family Orchidaceae and is endemic to New South Wales where it grows on the central-west slopes. As with similar greenhoods, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves flat on the ground but the flowering plants have up to eight translucent green flowers with narrow, dark green stripes and up to ten stem leaves.

<i>Pterostylis major</i> species of plant

Pterostylis major is a plant in the orchid family Orchidaceae and is endemic to New South Wales where it grows on the Northern Tablelands. As with similar greenhoods, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves on a short stalk but the flowering plants lack a rosette and have up to eleven well-spaced, bright green flowers with darker stripes, on a flowering stem with stem leaves.

Pterostylis parca commonly known as the Lithgow leafy greenhood is a plant in the orchid family Orchidaceae and is endemic to New South Wales. Non-flowering plants have a rosette of leaves on a short stalk. Flowering plants lack a rosette but have up to eight translucent pale green flowers on a flowering stem with three to six stem leaves.

<i>Pterostylis prasina</i> species of orchid endemic to Victoria and South Australia in Australia

Pterostylis prasina, commonly known as the mallee leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to southern continental Australia. Non-flowering have a rosette of leaves on a short stalk, but flowering plants lack the rosette and have up to eight pale green and translucent green flowers with darker green lines. The flowers have a pale green labellum with a darker central line. It is a common and widespread greenhood in parts of Victoria and South Australia.

<i>Pterostylis roensis</i> species of plant

Pterostylis roensis, commonly known as the painted rufous greenhood or dark rustyhood is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves. Flowering plants also have up to six green or brown to blackish flowers with translucent white panels and a dark brown, fleshy, insect-like labellum.

Pterostylis stenosepala, commonly known as the narrow-sepalled leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to New South Wales. Flowering plants have up to six shiny, translucent green flowers with darker green stripes. The flowers have an insect-like labellum which is green with a dark green mound on its upper end. Non-flowering plants have a rosette of leaves on a stalk, but flowering plants lack the rosette, instead having between four and eight stem leaves.

Pterostylis tenuis commonly known as the smooth leafy greenhood is a plant in the orchid family Orchidaceae and is endemic to New South Wales. Non-flowering plants have a rosette of leaves on a short stalk. Flowering plants lack a rosette but have up to four shiny, translucent green flowers on a flowering stem with three to six stem leaves.

<i>Pterostylis umbrina</i> species of plant

Pterostylis umbrina, commonly known as the broad-sepaled leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to the Australian Capital Territory and New South Wales on the Southern Tablelands. As with similar greenhoods, plants in flower differ from those that are not. Those not in flower have a rosette of leaves flat on a short stalk. Plants in flower have up to six green flowers with darker green stripes with stem leaves but lack a rosette.

Pterostylis vitrea commonly known as the glassy leafy greenhood is a plant in the orchid family Orchidaceae and is endemic to Queensland. Non-flowering plants have a rosette of leaves on a short stalk. Flowering plants lack a rosette but have up to seven translucent green flowers with darker green lines on a flowering stem with between five and seven stem leaves.

Pterostylis flavovirens, commonly known as the coastal banded greenhood, is a plant in the orchid family Orchidaceae that is endemic to South Australia. As with other similar orchids, non-flowering plants differ from those in flower. Flowering plants have up to seven pale to translucent green flowers with darker green stripes. The flowers have an insect-like labellum which is yellowish green with a slightly darker green stripe along its centre. Non-flowering plants have a rosette of leaves on a stalk, but flowering plants lack the rosette, instead having three to six stem leaves.

References

  1. 1 2 3 "Pterostylis macilenta". APNI. Retrieved 19 May 2017.
  2. 1 2 Jeanes, Jeff. "Pterostylis macilenta". Royal Botanic Gardens Victoria: vicflora. Retrieved 19 May 2017.
  3. 1 2 Jones, David L. (2006). "New taxa of Australasian Orchidaceae". Australian Orchid Research. 5: 117–118.
  4. "Bunochilus macilentus". APNI. Retrieved 19 May 2017.
  5. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 791.