Caladenia occidentalis

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Ruby spider orchid
Caladenia occidentalis 01.jpg
Caladenia occidentalis growing in Cockleshell Gully near Leeman
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. occidentalis
Binomial name
Caladenia occidentalis
Synonyms [1]
  • Calonemorchis occidentalis(Hopper & A.P.Br.) D.L.Jones & M.A.Clem.
  • Calonema occidentale(Hopper & A.P.Br.) D.L.Jones & M.A.Clem.
  • Jonesiopsis occidentalis(Hopper & A.P.Br.) D.L.Jones & M.A.Clem.

Caladenia occidentalis, commonly known as the ruby spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and one or two pinkish-red flowers with a white, red-striped labellum.

Contents

Caladenia occidentalis labellum detail Caladenia occidentalis 03.jpg
Caladenia occidentalis labellum detail
Caladenia occidentalis colour variation Caladenia occidentalis 02.jpg
Caladenia occidentalis colour variation

Description

Caladenia occidentalis is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, 100–150 mm (4–6 in) long and 3–4 mm (0.1–0.2 in) wide. One or two pinkish-red, white or pink flowers 50–80 mm (2–3 in) long and 50–70 mm (2–3 in) wide are borne on a stalk 150–300 mm (6–10 in) tall. The sepals and petals have long, reddish, thread-like tips. The dorsal sepal is erect, 40–60 mm (1.6–2.4 in) long and about 2 mm (0.08 in) wide. The lateral sepals are 40–60 mm (1.6–2.4 in) long, about 3 mm (0.1 in) wide and horizontal near their bases, then turn downwards and finally droop. The petals are 35–50 mm (1–2 in) long, about 3 mm (0.1 in) wide and arranged like the lateral sepals. The labellum is 8–12 mm (0.3–0.5 in) long, 6–9 mm (0.2–0.4 in) wide and creamy-white with red lines or spots. The sides of the labellum have short, blunt teeth, and the tip is curled under. There are two rows of cream to pinkish, anvil-shaped calli along the centre of the labellum. Flowering occurs from August to mid-October. [2] [3] [4]

Taxonomy and naming

Caladenia occidentalis was first described in 2001 by Stephen Hopper and Andrew Phillip Brown from a specimen collected near Mandurah and the description was published in Nuytsia . [1] The specific epithet (occidentalis) is a Latin word meaning "western" [5] referring to the distribution of this species. [3]

Distribution and habitat

The ruby spider orchid occurs between Bunbury and Arrowsmith in the Geraldton Sandplains, Jarrah Forest, Murchison and Swan Coastal Plain biogeographic regions where it grows in woodland and on the edges of seasonal swamps and lakes. [2] [3] [4] [6]

Conservation

Caladenia occidentalis is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife. [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.

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

Caladenia dundasiae, commonly known as the Patricia's spider orchid and Dundas spider orchid is a species of orchid endemic to a small area in the south-west of Western Australia. It is a rare orchid with a single hairy leaf and one or two, usually red flowers with thin, stiffly-held lateral sepals and petals.

<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 footeana</i> Species of orchid

Caladenia footeana, commonly known as the crimson 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, relatively small pinkish-red flowers with a white, red-striped labellum. Its relatively small size makes it hard to find in its surroundings.

Caladenia fuscolutescens, commonly known as the ochre 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 brownish-yellow flowers with a pale yellow, red-striped labellum. It is most common in spring after bushfires in the previous summer.

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

Caladenia gardneri, commonly known as the cherry spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and up to three pale pink, sweetly scented flowers with a dark pinkish-red labellum.

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

Caladenia georgei, commonly known as the tuart spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and up to three whitish to yellowish-green flowers flushed with red and which have a white labellum with a red tip.

Caladenia graniticola, commonly known as the Pingaring 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 yellowish-green, red and white flowers which have a greenish-yellow and white labellum with a red tip. It was originally described as Caladenia hoffmanii subsp. graniticola but has a slightly different labellum and column.

Caladenia heberleana, commonly known as Heberle's spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and up to three red, white and pale yellow flowers which have a white, red-tipped labellum.

Caladenia hoffmanii, commonly known as Hoffman's 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, greenish-yellow, red and white flowers which have a greenish-yellow labellum with a red tip. It is distinguished from the Pingaring spider orchid by small differences in the labellum and more northerly distribution.

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

Caladenia incensum, commonly known as the glistening spider orchid is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and three glistening white flowers which have a red-striped labellum.

Caladenia incrassata, commonly known as the puppet clown 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 which has a red-striped labellum.

Caladenia interjacens, commonly known as the Walpole 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 pale pink and white flowers which lack the red tip on the labellum common to many other similar caladenias.

Caladenia meridionalis, commonly known as the south coast spider orchid, is a species of orchid endemic to the south-west of Western Australia. It is an early-flowering orchid with a single erect, hairy leaf and one or two white flowers with long, drooping lateral sepals and petals.

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

Caladenia microchila, commonly known as the western wispy spider orchid, is a species of orchid endemic to the south-west of Western Australia. It is relatively common orchid with a single erect, hairy leaf and up to three wispy white flowers with narrow lateral sepals and petals and a white labellum with red markings.

Caladenia nobilis, commonly known as the noble 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 large white flowers with a red-marked labellum.

<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.

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

Caladenia polychroma, commonly known as the Joseph's spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and one or two relatively large and colourful but smelly flowers.

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

Caladenia speciosa, commonly known as the sandplain white 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 relatively large white flowers tinged with pink and with a fringe of long teeth on the sides of the labellum.

Caladenia startiorum, commonly known as Starts' 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 pink flowers with a fringe of long teeth on the sides of the labellum and pinkish to brown club-like glandular tips on the sepals.

References

  1. 1 2 3 "Caladenia occidentalis". APNI. Retrieved 24 February 2017.
  2. 1 2 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 107. ISBN   1877069124.
  3. 1 2 3 Brown, Andrew; Dundas, Pat; Dixon, Kingsley; Hopper, Stephen (2008). Orchids of Western Australia. Crawley, Western Australia: University of Western Australia Press. p. 66. ISBN   9780980296457.
  4. 1 2 Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 53. ISBN   9780646562322.
  5. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 853.
  6. 1 2 "Caladenia occidentalis". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.