Phaius robertsii

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Forest swamp orchid
LR061 72dpi Phaius pictus.jpg
Illustration by Lewis Roberts
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Genus: Phaius
Species:
P. robertsii
Binomial name
Phaius robertsii
Synonyms [1]

Phaius robertsii, commonly known as forest swamp orchid, [2] is a plant in the orchid family and is native to a small area of Tropical North Queensland and to New Caledonia. It is an evergreen, terrestrial herb with above-ground stems, three to five pleated leaves and up to twenty flowers which are yellow on the back and brick-red inside. It grows in wet places in rainforest.

Contents

Description

Phaius robertsii is an evergreen, terrestrial herb that has between four and six more or less cylindrical, above-ground stems 400–600 mm (20–20 in) long and 15–20 mm (0.6–0.8 in) wide. There are between three and five pleated leaves on each stem that are 400–700 mm (20–30 in) long and 70–100 mm (3–4 in) wide. Between four and twenty resupinate flowers 40–50 mm (2–2 in) long and wide are borne on a flowering stem 300–900 mm (10–40 in) tall. The flowers are yellow on the back and brick-red inside. The dorsal sepal is 35–42 mm (1–2 in) long, 10–12 mm (0.39–0.47 in) wide and more or less upright. The lateral sepals are a similar length but slightly wider and spread apart from each other. The petals are a similar length to the sepals but narrower and curve forwards. The labellum is yellow, 15–17 mm (0.59–0.67 in) long and 13–15 mm (0.5–0.6 in) wide with wavy edges. There is a complex callus in the centre of the labellum. Flowering occurs from April to June. [2] [3] [4]

Taxonomy and naming

Phaius robertsii was first formally described in 1883 by Ferdinand von Mueller in Southern Science Record. [5] [6] The species was discovered by Edgar Leopold Layard and "came under the horticultural care of Mr. James Roberts, F.R.H.S., in whose conservatory and under whose skillful attention it has lately been blooming here."

Phaius pictus was first formally described in 1952 by Trevor Edgar Hunt in The Victorian Naturalist from a specimen collected on Mount Bellenden Ker. [7] [8] The specific epithet (pictus) is a Latin word meaning "painted" or "coloured". [9]

In 2017, Judi Stone and Phillip James Cribb published a monograph entitled Lady Tankerville's Legacy – A Historical and Monographic Review of Phaius and Gastrorchis and reduced Phaius pictus to a synonym of Phaius robertsii. [10] However, the accepted name for this species according to the Council of Heads of Australasian Herbaria is P. pictus. [5] [11]

Distribution and habitat

In Queensland, the forest swamp orchid is found at altitudes of up to 600 m (2,000 ft) in a relatively small restricted area in the McIlwraith Range, and from the Bloomfield River to the Kirrama Range. It also occurs on the main island of New Caledonia. It prefers humid, sheltered rainforest close to streams or areas of seepage, or among boulders and forest litter. [2] [4] [12]

Conservation status

This species is listed as "vulnerable" by the Australian Commonwealth EPBC Act (under Phaius pictus, the name accepted by the Council of Heads of Australasian Herbaria) [11] [13] and under the Queensland Government Nature Conservation Act 1992. [4]

Related Research Articles

<i>Phaius</i> Genus of orchids

Phaius, commonly known as swamp orchids or in Chinese as 鶴頂蘭屬/鹤顶兰属 , is a genus of forty-five species of flowering plants in the orchid family, Orchidaceae. They are evergreen, terrestrial herbs which form clumps with crowded, sometimes stem-like pseudobulbs, large, pleated leaves and relatively large, often colourful flowers. Species in this genus are found in the tropical parts of Africa, Asia, Southeast Asia, New Guinea, Australia, and various islands of the Pacific and Indian Oceans. One species is also naturalized in Hawaii, Florida, and the Caribbean.

Bulbophyllum johnsonii, commonly known as the yellow snake orchid, is a species of epiphytic or lithophytic orchid that has a thin, creeping rhizome with flattened pseudobulbs, each with a single tough, dark green leaf and a single bright yellow to orange flower on a thread-like stalk. It grows on trees, shrubs and rocks in and near rainforest in tropical North Queensland.

<i>Bulbophyllum shepherdii</i> Species of orchid

Bulbophyllum shepherdii, commonly known as the wheat-leaf rope orchid, is a species of epiphytic or lithophytic orchid that forms a dense mat of branching rhizomes pressed against the surface on which it grows. The pseudobulbs are well spaced along the rhizome, each with a single egg-shaped leaf and a single small, white or cream-coloured flower with yellow tips. It grows on trees and rocks in rainforest and is endemic to eastern Australia.

<i>Phaius tankervilleae</i> Species of orchid

Phaius tankervilleae, commonly known as the greater swamp-orchid, swamp lily, swamp orchid, nun's-hood orchid, nun's orchid, veiled orchid, Lady Tankerville's swamp orchid or 鹤顶兰 , is a species of orchid native to areas from Asia to islands in the Pacific Ocean. It has large, pleated leaves and tall flowering stems bearing up to twenty five white, brown, mauve and yellow flowers. It was named for Lady Tankerville who owned the greenhouse where the first orchid flowered. It was the first tropical orchid to flower in England.

<i>Phaius tankervilleae <span style="font-style:normal;">var.</span> australis</i> Variety of orchid

Phaius tankervilleaevar.australis, also known as the common swamp orchid, southern swamp-orchid, swamp lily or island swamp-orchid, is a species of orchid endemic to eastern Australia. It is an evergreen, terrestrial herb with large, crowded pseudobulbs, large pleated leaves and flowers that are reddish brown on the inside and white outside.

Rhomboda polygonoides , commonly known as the velvet jewel orchid, is a species of terrestrial orchid that is native to New Guinea, New Caledonia, the Solomon Islands and north-eastern Queensland. It has between five and nine narrow egg-shaped, purplish green leaves with a central white stripe and up to fourteen green and white resupinate flowers with the lateral sepals held nearly horizontally.

<i>Spathoglottis paulinae</i> Species of orchid

Spathoglottis paulinae, commonly known as the small purple orchid, is a plant in the orchid family and is native to New Guinea and Tropical North Queensland. It is an evergreen terrestrial orchid with crowded pseudobulbs, between four and seven large, pleated leaves and up to thirty mauve to purple flowers.

<i>Aphyllorchis queenslandica</i> Species of flowering plant

Aphyllorchis queenslandica, commonly known as the yellow pauper orchid, is a leafless terrestrial mycotrophic orchid in the family Orchidaceae. It has up to twelve dull yellow flowers on a thin, fleshy, purple flowering stem and is endemic to tropical north Queensland where it grows in rainforest.

<i>Geodorum densiflorum</i> Species of orchid

Geodorum densiflorum, commonly known as pink nodding orchid or 地宝兰 , is a plant in the orchid family and is native to areas from tropical Asia to eastern Australia and some Pacific Islands. It is a terrestrial orchid with broad, pleated, dark green to yellowish leaves and up to and twenty pale pink flowers with dark red veins on the labellum. It grows in wetter habitats including rainforest, woodlands, grasslands and swamps.

<i>Geodorum terrestre</i> Species of orchid

Geodorum terrestre, commonly known as pink shepherds' crook or bent orchid, is a plant in the orchid family and is native to areas from tropical Asia to northern Australia. It is a terrestrial orchid with broad, pleated leaves and up to and twenty pale pink flowers with dark red veins on the labellum. It grows in wetter habitats including swamps.

<i>Crepidium fimbriatum</i> Species of orchid

Crepidium fimbriatum, commonly known as the fringed spur orchid, is a plant in the orchid family and is endemic to tropical Far North Queensland. It is an evergreen, terrestrial orchid with a fleshy stem, wavy leaves and many purple flowers crowded on a purple flowering stem.

<i>Liparis habenarina</i> Species of orchid

Liparis habenarina, commonly known as the common sphinx orchid or common hobgoblin orchid, is a plant in the orchid family and is endemic to Australia. It is a deciduous, terrestrial orchid with two or three egg-shaped leaves and between eight and twenty-two brownish to purplish flowers with their lateral sepals joined at the base. It grows in the understorey of near-coastal forests.

<i>Phaius amboinensis</i> Species of orchid

Phaius amboinensis, commonly known as Arnhem Land swamp orchid, is a plant in the orchid family and is native to areas from Malesia through to New Guinea, Australia and islands in the Pacific Ocean. It is an evergreen, terrestrial herb with up to eight pleated leaves and up to twenty, relatively large white flowers with a yellow labellum. It grows in wet, shady forests.

<i>Phaius tankervilleae <span style="font-style:normal;">var.</span> bernaysii</i> Variety of orchid

Phaius tankervilleaevar.bernaysii, also known as the yellow swamp orchid, is a species of orchid endemic to a small area of Queensland. It is an evergreen, terrestrial herb with large, crowded pseudobulbs, large pleated leaves and flowers that are white on the outside and sulfur yellow inside. Apart from flower colour, the species is identical to P. tankervilleae var. bernaysii.

<i>Dendrobium baileyi</i> Species of orchid

Dendrobium baileyi, commonly known as the blotched gemini orchid, is an epiphytic or lithophytic orchid in the family Orchidaceae and has arching stems and flowering stems with one or two spidery, yellow flowers with dark purple spots emerging from leaf axis. It grows in tropical North Queensland, New Guinea and the Solomon Islands.

<i>Dendrobium bowmanii</i> Species of orchid

Dendrobium bowmanii, commonly known as the straggly pencil orchid, is an epiphytic or lithophytic orchid in the family Orchidaceae. It has thin wiry, straggly stems with a small number of small leaves and up to four greenish or brownish flowers with a conspicuous white labellum. It grows in drier rainforests and coastal scrub in New South Wales, southern Queensland and New Caledonia.

<i>Pomatocalpa macphersonii</i> Species of orchid

Pomatocalpa macphersonii, commonly known as the blotched bladder orchid, is an epiphytic or lithophytic orchid with thick, cord-like roots, between two and eight dark green, leathery leaves and up to thirty cup-shaped, yellow flowers with red blotches and a white labellum with red blotches. It usually grows on rainforest trees and is found in New Guinea and tropical North Queensland, Australia.

<i>Sarcochilus hillii</i> Species of orchid

Sarcochilus hillii, commonly known as myrtle bells, is a small epiphytic orchid native to eastern Australia and New Caledonia. It has up to ten drooping, quill-shaped leaves and up to ten frosty white or pink flowers that have a hairy labellum with purple stripes.

Pinalia fitzalanii, commonly known as the common fuzz orchid, is a plant in the orchid family and is a clump-forming epiphyte or lithophyte. It has crowded pseudobulbs, each with three or four stiff, egg-shaped leaves sheathing the pseudobulb and up to thirty five creamy yellow flowers with soft hairs on the outside. It is found in moist habitats in New Guinea, the Solomon Islands and tropical North Queensland.

<i>Pholidota imbricata</i> Species of orchid

Pholidota imbricata, commonly known as the common rattlesnake orchid or necklace orchid, is a plant in the orchid family and is a clump-forming epiphyte or lithophyte with crowded pseudobulbs. Each pseudobulb has a single pleated, leathery leaf and up to sixty white, cream-coloured or greenish, cup-shaped flowers in two ranks along a wiry flowering stem. There is a large, papery bract at the base of each flower. This species is native to areas from tropical and subtropical Asia to the southwest Pacific.

References

  1. 1 2 "Phaius robertsii". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. 1 2 3 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 362. ISBN   1877069124.
  3. D.L.Jones; T.Hopley; S.M.Duffy (2010). "Factsheet - Phaius pictus". Australian Tropical Rainforest Orchids . Centre for Australian National Biodiversity Research (CANBR), Australian Government . Retrieved 29 May 2021.
  4. 1 2 3 "Approved conservation advice for Phaius pictus" (PDF). Australian Government Department of the Environment. Retrieved 31 October 2018.
  5. 1 2 "Phaius robertsii". APNI. Retrieved 1 November 2018.
  6. von Mueller, Ferdinand (1883). "Record of an undescribed Phaius from New Caledonia". Southern Science Record. 3: 265–266. Retrieved 31 October 2018.
  7. "Phaius pictus". APNI. Retrieved 1 November 2018.
  8. Hunt, Trevor Edgar (1952). "A new orchid from North Queensland". The Victorian Naturalist. 3 (823): 27–29. Retrieved 31 October 2018.
  9. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 606.
  10. "Phaius robertsii". APNI. Retrieved 1 November 2018.
  11. 1 2 "Phaius pictus". Australian Plant Census. Retrieved 23 November 2019.
  12. "Phaius robertsii". Endemia NC: Fauna and Flora of New Caledonia. Retrieved 1 November 2018.
  13. "Phaius robertsii". Australian Plant Name Index, IBIS database. Centre for Plant Biodiversity Research, Australian Government.