Caladenia radiata

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Ray spider orchid
Caladenia radiata.jpg
Near Lake Muir
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. radiata
Binomial name
Caladenia radiata
Synonyms

Caladenia radiata, commonly known as the ray 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 green, yellow and red flowers. It flowers more profusely after fire and grows in swampy areas, sometimes flowering whilst in water.

Contents

Description

Caladenia radiata is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, 100–250 mm (4–10 in) long and about 1 mm (0.04 in) wide. One or two green, yellow and red flowers 60–90 mm (2–4 in) long and 50–60 mm (2.0–2.4 in) wide are borne on a stalk 300–450 mm (10–20 in) tall. The sepals have thin, brown, club-like glandular tips 15–25 mm (0.6–1 in) long. The dorsal sepal is erect, 40–65 mm (2–3 in) long and 2–4 mm (0.08–0.2 in) wide. The lateral sepals and petals have about the same dimensions as the dorsal sepal and turn stiffly downwards. The labellum is 12–15 mm (0.5–0.6 in) long and wide and green with a dark red tip that is curled downwards. The sides of the labellum have erect, linear up to 5 mm (0.2 in) long and there are four rows of dark red, densely crowded calli along the mid-line. Flowering occurs from October to early December. [2] [3] [4]

Taxonomy and naming

Caladenia radiata was first described in 1948 by William Nicholls from a specimen collected near Yarloop and the description was published in The Victorian Naturalist. [1] [5] The specific epithet (radiata) is derived from the Latin word radius meaning "ray", "rod" or "spoke", [6] referring to the spreading teeth on the sides of the labellum. [3]

Distribution and habitat

The ray spider orchid is found between the Yarloop and Albany in the Avon Wheatbelt, Jarrah Forest, Swan Coastal Plain and Warren biogeographic regions where it grows in swampy areas, often flowering in standing water. [2] [3] [4] [7]

Conservation

Caladenia radiata is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife. [7]

Related Research Articles

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

Caladenia paludosa, commonly known as the swamp 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 red, greenish-yellow and cream-coloured flowers. It mostly grows in dense scrub and is one of the last of the similar spider orchids to flower.

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

Caladenia arenicola, commonly known as the carousel 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 red, white and green flowers on a flowering stem up to 60 cm (20 in) high. It is a common species on the Swan Coastal Plain, where it grows in sandy soil under trees.

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

Caladenia plicata, commonly known as the crab-lipped 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 red, yellow and pale green flowers with an unusual labellum which vibrates in the slightest breeze.

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

Caladenia ensata, commonly known as the stumpy spider orchid, is a species of orchid endemic to the south-west of Western Australia. It is a common orchid within its natural range and has a single, hairy leaf and up to three pale yellow and red flowers which have short but thick, fleshy glandular tips.

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

Caladenia falcata, commonly known as the fringed mantis orchid, is a species of orchid endemic to the south-west of Western Australia. It is a relatively common orchid within its natural range and has a single, hairy leaf and one or two green, yellow and red flowers with spreading petals and upswept lateral sepals.

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

Caladenia ferruginea, commonly known as the rusty spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and up to four rust-coloured flowers with a white, red-tipped 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.

<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.

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

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 hiemalis, commonly known as the dwarf common 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, cream-coloured flowers with a small, red-striped labellum. It has an early flowering period and its flowering is stimulated by summer fires.

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

Caladenia hirta subsp. hirta, commonly known as the sugar candy orchid or candy orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single leaf and up to three creamy-white or pink flowers with brownish tips and a brown back.

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.

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.

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

Caladenia pendens subsp. talbotii, commonly known as Talbot'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 hairy leaf and one or two white, red and yellow flowers with long drooping petals and sepals and sometimes has a citrus-like scent.

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

Caladenia pulchra, commonly known as the slender 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 red, yellow and white flowers, although the relative amount of each of these colours is variable.

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

Caladenia serotina, commonly known as the Christmas 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 white to cream-coloured and red flowers, although the relative amount of each is variable. It is one of the later-flowering spider orchids and occurs in the far south-west corner of the state.

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

Caladenia thinicola, commonly known as the Scott River 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 four yellowish-green and red flowers with a fringe of long teeth on the sides of the labellum and thick brown, club-like glandular tips on the sepals.

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

Caladenia uliginosa subsp. uliginosa, commonly known as the dainty spider orchid, or darting 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 four greenish-cream flowers which have a forward-projecting labellum with a dark red tip.

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

Caladenia valida, commonly known as the robust spider orchid, is a plant in the orchid family Orchidaceae and is endemic to south-eastern continental Australia. It is a ground orchid with a single sparsely hairy leaf and up to three white to cream-coloured flowers which sometimes have red streaks. It is similar to Caladenia reticulata but is large and taller with more stiffly spreading lateral sepals and petals.

References

  1. 1 2 "Caladenia radiata". APNI. Retrieved 9 March 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. 83. 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. 123. ISBN   9780980296457.
  4. 1 2 Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 149. ISBN   9780646562322.
  5. Nicholls, William Henry (1949). "Additions to the Orchidaceae of Western Australia - III". The Victorian Naturalist. 65: 267–268. Retrieved 9 March 2017.
  6. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 664.
  7. 1 2 "Caladenia radiata". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.