Purple beard orchid | |
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Calochilus robertsonii in Lane Cove National Park | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Orchidaceae |
Subfamily: | Orchidoideae |
Tribe: | Diurideae |
Genus: | Calochilus |
Species: | C. robertsonii |
Binomial name | |
Calochilus robertsonii | |
Synonyms [2] | |
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Calochilus robertsonii, commonly known as the purple beard orchid [3] or purplish beard orchid, [4] is a species of orchid native to Australia and New Zealand. It has a single dark green leaf and up to nine green to brown flowers with reddish or purplish stripes. The labellum has a glossy purple, mauve, or bronze-coloured beard with a ridge between the "eye" spots.
Calochilus robertsonii is a terrestrial, perennial, deciduous, herb with an underground tuber and a single fleshy, dark green, linear to lance-shaped leaf which is 150–400 mm (6–20 in) long and 8–12 mm (0.3–0.5 in) wide. Unlike some others in the genus, the leaf is fully developed at flowering time. Up to nine green to brown flowers with reddish or purplish stripes are borne on a flowering stem 150–450 mm (6–20 in) tall. The dorsal sepal is 12–15 mm (0.5–0.6 in) long, 8–11 mm (0.3–0.4 in) wide and the lateral sepals are a similar length but narrower. The petals are 7–9 mm (0.3–0.4 in) long and 5–6 mm (0.20–0.24 in) wide. The labellum is flat, 20–35 mm (0.8–1 in) long, 6–8 mm (0.24–0.31 in) wide, with short, purplish calli near its base. The middle section of the labellum has coarse, mauve, purple or bronze-coloured hairs up to 5 mm (0.2 in) and the tip has a glandular "tail" 5–10 mm (0.2–0.4 in) long and about 1 mm (0.04 in) wide. The column has two purple sham "eyes" joined by a distinct ridge. Flowering occurs from August to early December. [3] [4] [5] [6]
Calochilus robertsonii was first formally described in 1873 by George Bentham and the description was published in Volume 6 of Flora Australiensis . [1] [7] The specific epithet (robertsonii) honours John George Robertson (1803–1862) who collected the type specimen. [1] [8]
The purplish beard orchid is widespread and common in eastern Australia where it grows in a range of habitats from heath to forest and scrubland and from coast to mountains. It is found in Queensland south from Gympie, from coastal districts and inland as far as Condobolin in New South Wales, throughout most of Victoria and in South Australia, the Australian Capital Territory, and Tasmania. [3] [4] [9] In New Zealand, C. robertsonii only occurs on the North Island although a single specimen was collected on the northern tip of the South Island in 1965. [5] [10]
Calochilus, commonly known as beard orchids, is a genus of about 30 species of plants in the orchid family, Orchidaceae. Beard orchids are terrestrial herbs with a single leaf at the base of the plant, or no leaves. Their most striking feature is a densely hairy labellum, giving rise to their common name. Beard orchids, unlike some other Australian orchids, do not reproduce using daughter tubers, but self-pollinate when cross-pollination has not occurred. Most species occur in Australia but some are found in New Zealand, New Guinea and New Caledonia.
Calochilus paludosus, commonly known as the red beard orchid or red beardie, is a species of orchid native to Australia and New Zealand. It has a single fleshy, light green leaf and up to nine greenish flowers with reddish stripes. The labellum has a dull red or coppery coloured beard and lacks the "eye" spots of other beard orchids.
Calochilus stramenicola, commonly known as the wandoo beard orchid, is a species of orchid endemic to Western Australia. It has a single smooth, erect leaf and up to seven dull greenish flowers with reddish brown or purplish stripes. The labellum has a purplish beard with a ridge between two "eye" spots.
Calochilus therophilus, commonly known as the late beard orchid, is a species of orchid endemic to eastern Australia. It has a single channelled, dark green leaf with a reddish base and up to fifteen dull greenish flowers with bold red stripes. The labellum has a dark purplish beard with two "eye" spots. Unlike that of other beard orchids, there is no prominent ridge between the eye spots.
Calochilus therophilus, commonly known as the mountain beard orchid, is a species of orchid endemic to New South Wales and the Australian Capital Territory. It has a single fleshy, channelled, dark green leaf and up to fifteen green flowers with reddish lines. The labellum has two shiny metallic blue to purple plates near its base and there is no ridge between the two "eyes" on the column.
Calochilus caeruleus, commonly known as the wiry beard orchid, is a species of orchid native to northern Australia and New Guinea. It has a single leaf which continues to develop during flowering and up to twelve greenish flowers with reddish brown markings and a labellum with a red "beard".
Calochilus campestris, commonly known as the copper beard orchid, is a species of orchid endemic to south-eastern Australia. It has a single fleshy, channelled leaf and up to fifteen pale green and red flowers with a purple "beard".
Calochilus herbaceus, commonly known as the copper beard orchid or pale beard orchid, is a species of orchid native to south-eastern Australia and northern New Zealand. It has a single very short, rigid, fleshy leaf and up to eight pale green to brownish flowers with reddish stripes and a purple "beard".
Calochilus ammobius, commonly known as the sand beard orchid, is a species of orchid endemic to Queensland. It has a single leaf which is not present during flowering and up to three dull green flowers with reddish brown streaks and a labellum with a purple "beard".
Calochilus caesius, commonly known as the blue beard orchid, is a species of orchid endemic to the Northern Territory in Australia. It has a single leaf which is not present during flowering and up to five pale green, very short-lived flowers with a bluish-red "beard".
Calochilus gracillimus, commonly known as the slender beard orchid or late beard orchid, is a species of orchid endemic to eastern Australia. It has a single dark green leaf with a reddish base and up to nine green flowers with red stripes and a reddish, brownish or purplish "beard".
Calochilus grandiflorus, commonly known as the giant beard orchid or golden beard orchid, is a species of orchid endemic to eastern Australia. It has a single leaf with a reddish base and up to fifteen relatively large golden bronze-coloured flowers with a red or coppery red "beard".
Calochilus holtzei, commonly known as the ghostly beard orchid, is a species of orchid endemic to northwestern Australia. It has a single leaf and up to twenty pale green to yellowish flowers with red markings and a labellum with a greenish "beard".
Calochilus imperiosus, commonly known as the imperial beard orchid, is a species of orchid endemic to northern Australia. It has a single leaf and up to fifteen dull green flowers with red or purple markings and a labellum with a pinkish red "beard".
Calochilus metallicus, commonly known as the metallic beard orchid, is a species of orchid endemic to Tropical Queensland. It has a single dark green leaf and up to four pale green flowers with a pinkish or reddish "beard" on the labellum.
Calochilus pruinosus, commonly known as the mallee beard orchid, is a species of orchid endemic to southern continental Australia. It has up to fifteen dull greenish, pinkish or brownish flowers with red lines and a labellum with a purplish "beard", but is leafless.
Calochilus psednus, commonly known as the Cardwell beard orchid, is a species of orchid endemic to Queensland. It has up to three bluish green flowers with reddish brown lines and a labellum with a purplish "beard". The plant is leafless when flowering. It is only known from a small area near Cardwell.
Calochilus richae, commonly known as the bald-tip beard orchid, is a species of orchid endemic to a small area in Victoria. It is a rare species, discovered in 1928 but not seen again until 1968 and its numbers are in decline. It has a single dark green leaf and up to five reddish brown flowers with darker stripes and a labellum with short, spiky, purplish "hairs".
Calochilus sandrae, commonly known as the brownish beard orchid, is a species of orchid endemic to the higher parts of southern New South Wales. It has a single greenish brown leaf with a reddish base and up to five brownish green flowers with red striations and a labellum with a brownish purple "beard".
Calochilus uliginosus, commonly known as the swamp beard orchid, is a species of orchid endemic to Western Australia. It has a single dark green leaf with a reddish purple base and up to seven greenish to brownish flowers with red lines and a labellum with a reddish purple beard.
Media related to Calochilus robertsonii at Wikimedia Commons