Caladenia dorrienii

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Cossack spider orchid
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. dorrienii
Binomial name
Caladenia dorrienii
Synonyms
  • Caladenia filamentosa var. dorrienii(Domin.) A.S.George
  • Calonema dorrienii (Domin.) D.L.Jones & M.A.Clem.
  • Jonesiopsis dorrienii (Domin.) D.L.Jones & M.A.Clem.

Caladenia dorrienii, commonly known as the Cossack spider orchid is a species of orchid endemic to the south-west of Western Australia. It has a single hairy leaf and one, two or sometimes three small creamy-white flowers, usually with the lateral sepals and petals curving around the ovary and crossing each other. It is a rare orchid, only found in the extreme south-east of the state.

Contents

Description

Caladenia dorrienii is a terrestrial, perennial, deciduous, herb with an underground tuber and which grows in clumps. It has a single, erect, narrow linear, hairy leaf, 6–10 cm (2–4 in) long and 3–7 mm (0.1–0.3 in) wide. One, two or sometimes three white to creamy-white flowers are borne on a stalk 10–25 cm (4–10 in) tall. The flowers are 4–5 cm (1.6–2.0 in) long and 2–3 cm (0.8–1 in) wide. The sepals and petals are relatively short, greenish-white with red lines and dark glandular tips. The dorsal sepal is erect and the lateral sepals and petals usually curve downwards and cross each other. The labellum is pale white, relatively broad and has smooth to slightly toothed edges. Along its centre line there are two rows of white or pale red-tipped calli. Flowering occurs from September to November. [2] [3] [4]

Taxonomy and naming

Caladenia dorrienii was first formally described by Karel Domin in 1912 from a specimen collected by Arthur Dorrien-Smith near Bridgetown. The description was published in Journal of the Linnean Society, Botany. [1] [5] The specific epithet (dorrienii) honours the collector of the type specimen. [2]

Distribution and habitat

The Cossack spider orchid is only found in scattered communities between Kojonup and Boyup Brook and near West Dale in the Avon Wheatbelt and Jarrah Forest biogeographic regions where it grows in moist clay soils amongst dense small plants in wandoo woodland. [2] [3] [4] [6]

Conservation

Caladenia dorrienii is classified as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) and as "rare flora" under the Western Australian Wildlife Conservation Act 1950 . [4] [6]

Related Research Articles

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

Caladenia dimidia, commonly known as the chameleon orchid is a species of orchid endemic to the south-west of Western Australia. It has a single hairy leaf and one or two yellow, cream-coloured or pinkish flowers. It is a variable species, similar to the Joseph's spider orchid but has a more northerly distribution and smaller flowers.

Caladenia abbreviata, commonly known as the coastal spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three pale, creamy-yellow flowers on a flowering stem up to 35 cm (10 in) high. Although the flowers have long, thread-like petals and sepals, they are shorter and darker than those of other spider orchids. It is a rare, relatively recently discovered species although often found near human activities.

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

Caladenia busselliana, commonly known as Bussell's spider orchid, is a plant in the orchid family Orchidaceae and is endemic to a small area in the south-west of Western Australia. It is a rare orchid with an erect, hairy leaf and up to three pale yellow flowers. Only about fifty specimens are known and it is threatened by habitat destruction and by too-frequent or too infrequent bushfires.

<i>Caladenia caesarea <span style="font-style:normal;">subsp.</span> caesarea</i> Subspecies of orchid

Caladenia caesarea subsp. caesarea, commonly known as the mustard spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single spreading, hairy leaf and up to three mustard-coloured flowers with red stripes. It was originally described as a subspecies of Caladenia filamentosa but the rich colour of its flowers and prominent labellum separate it from that species.

<i>Caladenia caesarea <span style="font-style:normal;">subsp.</span> maritima</i> Subspecies of orchid

Caladenia caesarea subsp. maritima, commonly known as the cape spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single spreading, hairy leaf and up to three small mustard-coloured flowers with red stripes. It is only known from a small coastal area near Cape Leeuwin where it grows in clumps of ten or more.

Caladenia caesarea subsp. transiens, commonly known as the dwarf mustard spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single spreading, hairy leaf and up to three small lemon-yellow flowers with red stripes. It is only known from a single small population near the town of Williams.

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

Caladenia christineae, commonly known as Christine's spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to four small, white to cream-coloured flowers. It is distinguished from similar spider orchids by its small, odourless flowers with their stiffly held sepals and petals.

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

Caladenia cruscula, commonly known as the reclining spider orchid is a species of orchid endemic to a small area in the south-west of Western Australia. It has a single hairy leaf and a single cream-coloured flower with a long red fringe on the sides of its labellum.

Caladenia denticulata subsp. albicans, commonly known as the alabaster spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and one or two pale creamy-white flowers which have a white labellum with red markings. The only known population occurs in a small area near Arrowsmith.

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

Caladenia doutchiae, commonly known as the purple-veined clown orchid or purple-veined spider orchid is a species of orchid endemic to the south-west of Western Australia. It has a single hairy leaf and usually only one greenish-yellow and red flower with short, downswept petals, and lateral sepals that are broad at the base then narrow to a glandular tip.

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

Caladenia erythronema, commonly known as the red thread spider orchid, and Nyabing spider orchid is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single hairy leaf and up to three red, yellow or cream-coloured flowers with dangling, thread-like sepals and petals and a small labellum.

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

Caladenia excelsa, commonly known as the giant spider orchid, is a species of orchid endemic to a small area in the south-west of Western Australia. It is a rare species with a single, hairy leaf and up to three cream-coloured to greenish-cream flowers with long, drooping sepals and petals. It is one of the tallest spider orchids in Western Australia and, with Caladenia splendens, has the largest flowers of any Western Australian orchid.

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

Caladenia horistes, commonly known as the cream spider orchid is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and one or two, creamy-yellow flowers which have a red-striped labellum and long, dark, thread-like tips on the sepals and petals.

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

Caladenia paradoxa, commonly known as the ironcaps spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three small creamy-white flowers. It was previously thought to be the same species as the eastern Australian Caladenia flaccida but is now recognised as distinct.

Caladenia perangusta, commonly known as the Boyup Brook spider orchid, is a species of orchid endemic to the south-west of Western Australia. It is a rare spider orchid with a single hairy leaf and one or two cream-yellow or red flowers with narrow, drooping sepals and petals.

Caladenia postea, commonly known as the dark-tipped spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three small, pale creamy-white flowers. It has a relatively late flowering period compared to similar spider orchids.

Caladenia ultima, commonly known as the late spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three creamy-yellow flowers with a red-striped labellum. It is one of the last spiders orchids to flower each year.

Caladenia validinervia, commonly known as the Lake Muir spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three greenish to creamy white flowers with red stripes on the sepals and petals. The flowers have relatively narrow sepals and petals and a relatively small labellum. It is a rare orchid only known from an area between Rocky Gully and Collie.

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

Caladenia vulgata, commonly known as the common spider orchid, is a species of orchid endemic to the south-west of Western Australia. It is a relatively common and widespread orchid with a single erect, hairy leaf and up to three creamy-white flowers. There is some variation in the species, both in flower colour and growth habit.

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

Caladenia xantha, commonly known as the primrose spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three yellow flowers with a cream-coloured, brown-striped labellum.

References

  1. 1 2 "Caladenia dorrienii". APNI. Retrieved 21 January 2017.
  2. 1 2 3 Brown, Andrew; Dixon, Kingsley; French, Christopher; Brockman, Garry (2013). Field guide to the orchids of Western Australia : the definitive guide to the native orchids of Western Australia. Simon Nevill Publications. p. 57. ISBN   9780980348149.
  3. 1 2 Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 31. ISBN   9780646562322.
  4. 1 2 3 "Approved Conservation Advice for Caladenia dorrienii (Cossack Spider-orchid)" (PDF). Australian Government Department of the Environment. Retrieved 21 January 2017.
  5. Domin, Karel (1912). "Additions to the flora of western and north-western Australia". Journal of the Linnean Society, Botany. 41: 251–252.
  6. 1 2 "Caladenia dorrienii". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.