| Caladenia audasii | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Diurideae |
| Genus: | Caladenia |
| Species: | C. audasii |
| Binomial name | |
| Caladenia audasii | |
| Synonyms [1] | |
| |
Caladenia audasii is a plant in the orchid family Orchidaceae and is endemic to Victoria. It is a rare ground orchid with a single hairy leaf and a single yellow flower.
Caladenia audasii is a terrestrial, perennial, deciduous, herb with an underground tuber and a single hairy leaf, 5–10 cm (2–4 in) long and 6–10 mm (0.2–0.4 in) wide. [2]
A single yellow flower 9 cm (4 in) in diameter is borne on a spike 11–19 cm (4–7 in) high. The petals and sepals are 3–6 cm (1–2 in) long and spreading, the petals somewhat shorter than the sepals. The petals and lateral sepals are 4–5 mm (0.16–0.20 in) wide and taper to a thread-like end covered with glandular hairs. The labellum is curved with the tip rolled under and has erect lateral lobes. It is about 18 mm (0.7 in) long and 10 mm (0.4 in) wide when flattened. The edges of the labellum are scalloped and the middle lobe has short, broad teeth. There are six rows of stalkless calli along the centre of the labellum. Flowering occurs from September to November. [2] [3]
The species was first formally described by Richard Rogers in 1927 and the description was published in Transactions and Proceedings of the Royal Society of South Australia . The type specimen was collected on Mount McIvor near Bendigo. [1] [3] The specific epithet (audasii) honours James Wales Clarendon Audas, a member of staff at the National Herbarium of Victoria. [4]
Only five plants of this orchid species were known in 2000, growing in grassy Box–ironbark forest in three disjunct populations near Bendigo, Kingower and Deep Lead north-west of Stawell. It is extinct in South Australia. [5] In June 2015, thirty new plants were introduced into the Greater Bendigo National Park. [6]
This species is classified as "Endangered" under the Commonwealth Government Environment Protection and Biodiversity Conservation Act 1999 (EPBC) Act. [5]
Caladenia aestiva, commonly known as summer spider orchid, is a plant in the orchid family Orchidaceae and is endemic to south-eastern Australia. It is a ground orchid which grows singly or in small groups in the Australian Capital Territory and Victoria. It has one or two greenish-yellow to pale yellow flowers, often while the single, hairy leaf withers.
Caladenia amoena, commonly known as the charming spider orchid, is a plant in the orchid family, Orchidaceae, and is endemic to Victoria. It is a ground orchid which grows singly or in small groups, has a single dark green, hairy leaf and a single yellowish-green flower with red stripes. It is only known from a few sites and has been classified as Endangered.
Caladenia ampla, commonly known as the dainty spider orchid, is a plant in the orchid family Orchidaceae and is endemic to Victoria. It is a ground orchid with a single hairy leaf and a single flower which is sometimes yellowish-green flower with red stripes and sometimes entirely red.
Caladenia ancylosa, commonly known as the Genoa spider orchid, is a plant in the orchid family Orchidaceae and is endemic to Victoria. It is a ground orchid with a single hairy leaf and a single cream-coloured flower with red markings.
Caladenia brumalis, commonly known as winter spider orchid, is a plant in the orchid family Orchidaceae and is endemic to South Australia. It has an erect, hairy leaf and usually a single white to pinkish flower with darker markings. It is only found in a few places due to habitat loss and is considered to be vulnerable.
Caladenia calcicola, commonly known as the Bats Ridges spider orchid, is a plant in the orchid family Orchidaceae and is endemic to a small area near the Victoria - South Australia border. It is a ground orchid with a single hairy leaf and one or two glossy, pale yellow flowers with maroon markings.
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.
Caladenia caudata, commonly known as tailed spider orchid, is a plant in the orchid family Orchidaceae and is endemic to Tasmania. It is a ground orchid with a single hairy leaf and up to four red, or yellow and red flowers with dark red to almost black tips.
Caladenia clavigera, commonly known as plain-lip spider orchid or clubbed spider orchid is a plant in the orchid family Orchidaceae and is endemic to Australia. It is a ground orchid which grows as scattered individuals or in small colonies in Victoria, New South Wales and South Australia. It has a single leaf and one or two small yellowish-green and red flowers.
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 colorata, commonly known as coloured spider-orchid, small western spider-orchid and painted spider-orchid is a plant in the orchid family Orchidaceae and is endemic to South Australia and possibly Victoria. It is a ground orchid with a single hairy leaf, and usually a single creamy-green flower with blood-red or purple-brown markings and with dark tips on the petals and sepals.
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.
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.
Caladenia cremna, commonly known as Don's spider orchid, is a plant in the orchid family Orchidaceae and is endemic to a small area in Victoria. It is a rare ground orchid with a single hairy leaf and a single yellow flower with red striations.
Caladenia cretacea, commonly known as Stuart Mill spider orchid, is a plant in the orchid family Orchidaceae and is endemic to a small area in Victoria. It is a rare ground orchid with a single leaf and one or two white flowers on a hairy stalk.
Caladenia cruciformis, commonly known as the crucifix spider orchid, or red cross spider orchid, is a plant in the orchid family Orchidaceae and is endemic to a small area in Victoria. It is a rare ground orchid with a single, sparsely hairy leaf and a single dark red to crimson flower with blackish tips.
Caladenia dienema, commonly known as the windswept spider-orchid, is a plant in the orchid family Orchidaceae and is endemic to Tasmania. It is a ground orchid with a single, hairy leaf and a single, variably-coloured, usually dark red flower on a thin, wiry stem 5–12 cm (2–5 in) high.
Caladenia formosa, commonly known as the large crimson spider orchid, or elegant 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 a single crimson-coloured flower and which mainly occurs only in south-western Victoria.
Caladenia pumila, commonly known as the dwarf spider orchid is a plant in the orchid family Orchidaceae and is endemic to Victoria, Australia. It is a ground orchid with a single erect, hairy leaf and a single white flower with pale pink stripes. Its short flowering stem distinguishes it from other Victorian spider orchids. After 1933 it was presumed extinct until two plants were discovered in 2009.
Caladenia xanthochila, commonly known as the yellow-lip spider orchid is a plant in the orchid family Orchidaceae and is endemic to southern Australia. It is a rare ground orchid with a single leaf and usually only one pale greenish-yellow flower. Only a few plants are known from Victoria and South Australia.
