Caladenia aurantiaca

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Orangetip fingers
Caladenia aurantiaca.jpg
Caladenia aurantiaca growing near Port Albert
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Caladenia
Species:
C. aurantiaca
Binomial name
Caladenia aurantiaca
Synonyms [1]

Petalochilus aurantiacus(R.S.Rogers) D.L.Jones & M.A.Clem

Contents

Caladenia aurantiaca, commonly known as orangetip fingers, is a plant in the orchid family Orchidaceae and is endemic to Victoria, although it is also found on one Bass Strait island. It is a slender ground orchid with a single hairy leaf and one or two short-lived, orange-tipped, white flowers on a thin, wiry spike.

Description

Caladenia aurantiaca is a terrestrial, perennial, deciduous, herb with an underground tuber and a single hairy leaf, 3–10 cm (1–4 in) long and 1–2 mm (0.04–0.08 in) wide. [2] [3]

There are one or two white, orange-tipped flowers on a thin, wiry, sparsely hairy spike 5–22 cm (2–9 in) high, each flower 15–20 mm (0.6–0.8 in) wide. The dorsal sepal is erect in the lower part but curves forward, partly covering the column. It is oblong, 7–10 mm (0.3–0.4 in) long and 2 mm (0.08 in) wide. The lateral sepals are narrow lance-shaped, 7–10 mm (0.3–0.4 in) long, 2.5 mm (0.1 in) wide, turn downwards and are usually parallel to each other. The petals are about the same size as the sepals and spread widely or turn downwards. The labellum is egg-shaped, about 5 mm (0.2 in) long, 6 mm (0.2 in) wide with three lobes. The lateral lobes are erect, surround the column and have slightly wavy edges. The mid-lobe is triangular, curves downward with up to 3 pairs of short, orange calli along its edge. There are two rows of calli along the centre of the labellum. The column is pale green is broad with broad wings. Flowering occurs from August to November but the flowers are self-pollinating and are only open for up to four days. [2] [3]

Taxonomy and naming

The species was first formally described by Richard Rogers in 1922 and given the name Caladenia carnea var. aurantica. The description was published in Transactions and Proceedings of the Royal Society of South Australia and the type specimen was collected near Alberton. [4] [5] In 1947, Herman Rupp raised it to species level and published the change in Proceedings of the Linnean Society of New South Wales . [1] [6] The specific epithet (aurantiaca) is a Neo-Latin word meaning "orange". [7]

Distribution and habitat

Caladenia aurantiaca grows in near-coastal areas east of Melbourne in moist heath on sandy soils. It has also been seen on Deal Island in Bass Strait. [2] [3]

Conservation

This species is classified as "rare" in Victoria and as Endangered under the Tasmanian "Threatened Species Protection Act 1995". [2] [3]

Related Research Articles

<i>Caladenia carnea</i> Species of orchid

Caladenia carnea, commonly known as pink fingers, is a plant in the orchid family Orchidaceae and is endemic to eastern and south-eastern Australia, including Tasmania. It has a single thin, green leaf and one to five white or pink flowers with red stripes and two rows of yellow-tipped "calli" on their labellum.

<i>Caladenia saccharata</i> Species of orchid

Caladenia saccharata, commonly known as sugar orchid, is a species of flowering plant in the orchid family, Orchidaceae and is endemic to the south-west of Western Australia. It has a single leaf and a single flower with three white sepals and two similar petals.

<i>Caladenia fuscata</i> Species of orchid

Caladenia fuscata, commonly known as dusky fingers, is a plant in the orchid family Orchidaceae and is endemic to eastern and south-eastern Australia, including Tasmania. It is a small ground orchid found in eucalyptus woodland and which flowers in September and October.

<i>Caladenia alata</i> Species of orchid

Caladenia alata, commonly known as the fairy orchid, is a plant in the orchid family Orchidaceae and is found in south-eastern Australia and New Zealand. It is a ground orchid with small, usually short-lived flowers, which have relatively stiffly held petals and sepals and reddish-purple bars on the labellum.

Caladenia atradenia, commonly known as bronze fingers, is a plant in the orchid family Orchidaceae and is endemic to New Zealand. It is a ground orchid with a thin, hairy leaf and a thin wiry stem bearing one or two dark green or greenish red flowers with maroon or magenta markings.

Caladenia atrata, commonly known as dark caladenia is a plant in the orchid family Orchidaceae and is endemic to Tasmania. It is a ground orchid with flowers that are bright white on the front, but densely covered with black glands on the back.

Caladenia bartlettii is a plant in the orchid family Orchidaceae and is endemic to New Zealand. It is a ground orchid with a single narrow, hairy leaf and a thin wiry stem usually bearing one short-lived mauve to pink flower.

Caladenia brachyscapa is a plant in the orchid family Orchidaceae and is native to Victoria and possibly Clarke Island in Bass Strait. It is a ground orchid with a single hairy leaf and a reddish-pink flower with thick, black, club-like swellings on the petals and sepals. Although formally described in 1988 living specimens have not been observed since 1979.

Caladenia campbellii, commonly known as thickstem fairy fingers or thick-stem caladenia, is a plant in the orchid family Orchidaceae and is endemic to Tasmania. It is a ground orchid with a single, sparsely hairy leaf and one or two flowers that are pinkish on the outside and cream-coloured on the inside. The flowers are self-pollinating and short-lived.

<i>Caladenia cardiochila</i> Species of orchid

Caladenia cardiochila, commonly known as thick-lipped spider-orchid, fleshy-lipped caladenia and heartlip spider-orchid, is a plant in the orchid family Orchidaceae and is endemic to Victoria and South Australia. It is a ground orchid with a single hairy leaf and one or two yellowish-green, red-striped flowers on a thin, wiry stem.

<i>Caladenia catenata</i> Species of orchid

Caladenia catenata, commonly known as white caladenia, white fingers and lady's fingers, is a plant in the orchid family Orchidaceae and is endemic to New South Wales, Queensland and Victoria. It is a ground orchid with a single hairy leaf and one or two white, sometimes pink flowers on a thin, sparsely-hairy stem. It is similar to Caladenia carnea but lacks the red and white bars on the labellum of that species.

Caladenia cleistantha is a plant in the orchid family Orchidaceae and is endemic to the south-east of Australia. It is a ground orchid which occurs as solitary plants and has a singly hairy leaf and one or two cleistogamous flowers..

Caladenia concinna, commonly known as the neat spider orchid, is a plant in the orchid family Orchidaceae and is endemic to Australia. It is a ground orchid with a single hairy leaf, and usually a single greenish flower with red stripes on the petals and sepals.

<i>Caladenia conferta</i> Species of orchid

Caladenia conferta, commonly known as the crowded spider orchid or coast spider-orchid, is a plant in the orchid family Orchidaceae and is endemic to a restricted area in South Australia. It is a ground orchid with a single hairy leaf, and usually a single yellowish-green flower with red markings on a wiry, hairy stalk.

<i>Caladenia congesta</i> Species of orchid

Caladenia congesta, commonly known as black-tongue caladenia, is a plant in the orchid family Orchidaceae and is endemic to Australia. It is a ground orchid with a single, sparsely hairy leaf, and up to three bright pink flowers with the central part of the labellum completely covered with black calli. It is a widespread species but not common in any part of its range.

<i>Caladenia cracens</i> Species of orchid

Caladenia cracens, commonly known as the elegant caladenia, is a plant in the orchid family Orchidaceae and is endemic to Tasmania. It is a ground orchid with a single, sparsely hairy leaf and a single pale to dark pink or mauve flower on a thin, wiry stem 5–18 cm (2–7 in) high.

Caladenia nothofageti, commonly known as beech caladenia or white fingers, is a plant in the orchid family Orchidaceae and is endemic to New Zealand. It has a single, sparsely hairy, long, thin leaf and one or two white flowers with greenish-white backs, on a thin stalk.

<i>Caladenia tessellata</i> Species of orchid

Caladenia tessellata, commonly known as the thick-lip spider-orchid, is a plant in the orchid family Orchidaceae and is endemic to south-eastern Australia. It is a ground orchid with a single hairy leaf and one or two yellowish-green flowers with dark red markings.

<i>Caladenia vulgaris</i> Species of orchid

Caladenia vulgaris, commonly known as summer fingers, or slender pink-fingers is a species of orchid endemic to southern Australia. It has a single, long, erect, hairy leaf and one or two pink or whitish flowers.

Caladenia zephyra is a plant in the orchid family Orchidaceae and is endemic to South Australia. It is a ground orchid with a single, densely hairy leaf and a single cream-coloured to very pale yellow flower with blackish glandular hairs on the sepals and petals. It occurs on the Eyre Peninsula but may have a wider distribution.

References

  1. 1 2 3 "Caladenia aurantiaca". APNI. Retrieved 6 October 2016.
  2. 1 2 3 4 Jeanes, Jeffrey. "Caladenia aurantiaca". Royal Botanic Gardens Victoria: Vicflora. Retrieved 6 October 2016.
  3. 1 2 3 4 "Caladenia aurantica" (PDF). Government of Tasmania Department of Primary Industries, Parks, Water and Environment. Retrieved 6 October 2016.
  4. "Caladenia carnea var. aurantiaca". APNI. Retrieved 6 October 2016.
  5. Rogers, Richard Sanders (1922). "Contributions to the Orchidology of Australia". Transactions and Proceedings of the Royal Society of South Australia. 46: 154. Retrieved 6 October 2016.
  6. Rupp, Hermann (1947). "A Review of the Species Caladenia carnea R.Br. (Orchidaceae)". Proceedings of the Linnean Society of New South Wales. 71: 280. Retrieved 6 October 2016.
  7. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 207.